EP1200840A1 - Verfahren und vorrichtung zur automatischen probenvorbereitung - Google Patents
Verfahren und vorrichtung zur automatischen probenvorbereitungInfo
- Publication number
- EP1200840A1 EP1200840A1 EP00938728A EP00938728A EP1200840A1 EP 1200840 A1 EP1200840 A1 EP 1200840A1 EP 00938728 A EP00938728 A EP 00938728A EP 00938728 A EP00938728 A EP 00938728A EP 1200840 A1 EP1200840 A1 EP 1200840A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sample
- devices
- tubes
- preparation
- chromatography
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000002360 preparation method Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000004458 analytical method Methods 0.000 claims abstract description 46
- 238000005464 sample preparation method Methods 0.000 claims abstract description 6
- 238000007792 addition Methods 0.000 claims description 34
- 239000000126 substance Substances 0.000 claims description 28
- 238000004587 chromatography analysis Methods 0.000 claims description 18
- 238000003860 storage Methods 0.000 claims description 18
- 238000011161 development Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 2
- 239000000523 sample Substances 0.000 description 157
- 239000000243 solution Substances 0.000 description 35
- 239000003153 chemical reaction reagent Substances 0.000 description 26
- 239000012491 analyte Substances 0.000 description 22
- 238000010828 elution Methods 0.000 description 14
- 239000007789 gas Substances 0.000 description 11
- 238000004128 high performance liquid chromatography Methods 0.000 description 9
- 210000002700 urine Anatomy 0.000 description 9
- 238000005406 washing Methods 0.000 description 9
- 239000003463 adsorbent Substances 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 5
- 230000008901 benefit Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 239000008280 blood Substances 0.000 description 4
- 210000004369 blood Anatomy 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 238000004949 mass spectrometry Methods 0.000 description 4
- 239000003960 organic solvent Substances 0.000 description 4
- 239000012487 rinsing solution Substances 0.000 description 4
- 239000012488 sample solution Substances 0.000 description 4
- 210000001124 body fluid Anatomy 0.000 description 3
- 239000010839 body fluid Substances 0.000 description 3
- 238000004590 computer program Methods 0.000 description 3
- 230000003750 conditioning effect Effects 0.000 description 3
- 229940079593 drug Drugs 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 238000004817 gas chromatography Methods 0.000 description 3
- 230000008719 thickening Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- CGQCWMIAEPEHNQ-QMMMGPOBSA-N (2s)-2-hydroxy-2-(4-hydroxy-3-methoxyphenyl)acetic acid Chemical compound COC1=CC([C@H](O)C(O)=O)=CC=C1O CGQCWMIAEPEHNQ-QMMMGPOBSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229960000583 acetic acid Drugs 0.000 description 2
- 230000001143 conditioned effect Effects 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000002920 hazardous waste Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 241001631457 Cannula Species 0.000 description 1
- UEZVMMHDMIWARA-UHFFFAOYSA-N Metaphosphoric acid Chemical compound OP(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 238000001636 atomic emission spectroscopy Methods 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003480 eluent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003891 environmental analysis Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000012362 glacial acetic acid Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229910001867 inorganic solvent Inorganic materials 0.000 description 1
- 239000003049 inorganic solvent Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000002414 normal-phase solid-phase extraction Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000013610 patient sample Substances 0.000 description 1
- 238000005375 photometry Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229940088594 vitamin Drugs 0.000 description 1
- 239000011782 vitamin Substances 0.000 description 1
- 229930003231 vitamin Natural products 0.000 description 1
- 235000013343 vitamin Nutrition 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/02—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor using a plurality of sample containers moved by a conveyor system past one or more treatment or analysis stations
- G01N35/025—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor using a plurality of sample containers moved by a conveyor system past one or more treatment or analysis stations having a carousel or turntable for reaction cells or cuvettes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/06—Preparation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/24—Automatic injection systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/26—Conditioning of the fluid carrier; Flow patterns
- G01N30/38—Flow patterns
- G01N30/46—Flow patterns using more than one column
- G01N30/466—Flow patterns using more than one column with separation columns in parallel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/25—Chemistry: analytical and immunological testing including sample preparation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/25—Chemistry: analytical and immunological testing including sample preparation
- Y10T436/2575—Volumetric liquid transfer
Definitions
- the invention relates to a method and a device for the automatic preparation of samples for an analytical analysis and the use of the device for developing sample preparation and / or analysis methods for individual analytes.
- the quantitative determination of analytes plays an important role in many areas of technology. Examples of this are the examination of food to check for contamination and pollutants and compliance with legal standards; the examination of water, for example for the heavy metal content; the examination of medicines, for example for changes in the active substance content during storage; and the examination of body fluids for medical diagnosis.
- the quantitative determination of the analytes is carried out by various analytical methods, for example by chromatographic methods such as high pressure liquid chromatography (HPLC) or gas chromatography (GC), mass spectroscopy (MS), Gas chromatography coupled with mass spectroscopy (GC-MS), photometry or atomic emission spectroscopy.
- the sample containing the analyte has to be prepared before the actual quantitative determination in order to remove interfering components during the determination or to release the analyte.
- the sample can e.g. be brought into contact with various washing solutions in order to thereby remove products soluble in the washing solutions.
- Solid phase extraction is another example of sample preparation, in which the sample to be examined is absorbed on a solid phase, the components of the sample which are disruptive in the content determination are rinsed out and then the sample is desorbed from the solid phase.
- An automatic sample preparation device from Gilson is also known for simpler execution of the sample preparation.
- the sample is cleaned using a sample tube.
- This sample tube has an opening at the top and bottom and is usually made of plastic. Depending on the analyte, it may be empty, contain a frit or a filter plug or preferably an adsorbent material (for example silica gel or aluminum oxide) attached between two frits.
- a large number of these sample tubes are arranged in a storage vessel in eighteen rows, each with six sample tubes.
- An automatic feeder with six syringes located directly above one of the rows of sample tubes is located above this storage vessel. At the end of each syringe there is a valve from which lines go to storage vessels.
- the column When preparing the sample, the column is first conditioned, for example, with an organic solvent and then with an inorganic solvent, the addition being made from a storage container via the syringe assigned to the respective sample tube.
- the sample containing the analyte for example a human urine or blood sample, is then added to each of the six sample tubes via the associated syringe.
- an adsorbent in the sample tube on which the analyte is absorbed.
- the substances not to be analyzed can be rinsed out by adding one or more washing solutions, again from the various storage containers via the syringes assigned to the individual sample tubes. Since the sample tubes are open at the bottom, the various
- wash solutions can be eluted from the tube either by applying slight pressure from above and flushing with air (through the respective syringe) or by applying a vacuum from below.
- an elution solution is again added via the automatic addition device, with which the analyte is rinsed from the adsorbent, the elution solution containing the analyte being collected at the lower end of the sample tube. All added substances (liquids and gases) as well as the sample of a sample tube are therefore supplied via a single syringe.
- the automatic addition device with the six needles moves to the next row of sample tubes and again goes through the various process steps.
- the storage vessel is then removed from the apparatus, the used sample tubes are discarded, and the elution solutions collected with the respective analytes are conveyed to a device for analysis, for example to an autosampler of an HPLC apparatus, and analyzed there.
- a similar device is also known from the Hamilton company.
- the different solutions and the sample are not added via a single needle, but via a needle bundle, with each individual needle of the bundle being fed via a Connection line is connected to an associated reservoir.
- the needle bundle or a group of several needle bundles moves on to the next sample tube or the next row of sample tubes until, similarly to the Gilson device, all the sample tubes in the storage vessel have been processed.
- the prepared samples eluted from the sample tubes are then passed on to the analysis device.
- the chemical and physical properties of the internal standard should be as similar as possible to the analyte. However, it is usually difficult to find an internal standard with similar properties for a given analyte.
- a second problem with the known methods, which cannot be solved by an internal standard, is when the analyte itself is volatile. Then the sample tube must either be closed or cooled, which, however, makes the overall process much more complicated.
- the object of the present invention is therefore to provide a method and an apparatus for carrying out this method, which allows a more precise analysis.
- sample tubes are given, characterized in that after the addition of a sample and / or one or more of the substances by the first dispensing device, sample tubes and dispensing devices are shifted against one another, or if necessary several times, so that the further addition or further additions of sample and / or one or more of the substances in the sample tube takes place or take place through the second and optionally further outlet device (s), ie The sample and / or one or more of the substances, but not all substances and the sample, are added via each of the delivery devices.
- the individual sample preparation steps are not carried out successively for each individual sample tube with a needle or a needle bundle before the next sample tube is treated, but the individual sample preparation steps for each sample tube are carried out in succession at different delivery devices carried out, ie Sample tubes and dispensing devices are shifted against each other at least once before the complete addition of samples and all substances necessary for the preparation.
- a first sample tube receives a conditioning solution at a first delivery device.
- the sample tubes described above are preferably used as sample tubes tubes inserted with an opening at the top and bottom.
- Analyte or substance (s) for sample preparation are added from above and removed from the lower opening by applying positive pressure from above or negative pressure from below or rinsing with an elution solution.
- tubes with only one upper opening can also be used, the added samples and substances then being removed after contact with adsorbent and / or other substances through the upper opening, for example by suction.
- the first sample tube then becomes closed a second delivery device (or vice versa) where, for example, the sample to be analyzed is introduced.
- a second sample tube is preferably transported to the first delivery device at the same time and receives the conditioning solution there in turn.
- the first sample tube is then forwarded to a third delivery device and a washing solution is added there, while the second sample tube at the second delivery device in turn receives a sample and a third sample tube is conditioned at the first delivery device.
- the sample tubes are again passed on to the next delivery device, for example the analyte to be analyzed is desorbed from the sample tube by adding an elution solution to the fourth delivery device and the desorbed sample is fed to an analysis device while the second sample tube is at the third dispenser, the third sample tube is at the second dispenser, and a newly introduced fourth sample tube is at the first dispenser.
- the sample tubes are moved one step further, so that the first sample tube can be removed, for example, while the analyte is desorbed from the second sample tube and a fifth sample tube is inserted at the beginning of the chain.
- the sample tubes and delivery devices are each displaced by a predetermined distance, the distance between the sample tubes and the distance between the delivery is one or more times this distance.
- the solution emerging at the lower end of the sample tube is preferably collected and collected (possibly for recycling) or discarded, while the solution containing the analyte is passed on for analysis as automatically as possible.
- Samples and / or one or more solutions and / or gases can be added to the individual addition stations. For example, it is advisable to subsequently rinse the dispenser with a rinsing solution when adding the sample in order to avoid contamination of the sample due to the failure to rinse when adding the sample to the next sample tube.
- a gas for example air
- a vacuum can also be applied to the lower end of the sample tube.
- the slowest addition step determines the duration of the individual addition steps.
- the duration of the individual additions, the number of individual additions and therefore also the total residence time are therefore the same for each individual sample, so that each prepared sample solution arrives at the analysis device after the identical residence time.
- the different solvent losses encountered in the prior art due to different residence times therefore do not occur, so that the addition of an internal standard is dispensed with, the overall process can be simplified and the measuring accuracy can be increased.
- the method according to the invention also has other advantages. For example, in the known devices all rinsing solutions, with the exception of the elution solution containing the analyte, are collected in a collection basin located under the sample tube.
- the entire solution must be disposed of as hazardous waste.
- the individual rinsing solutions are collected separately at the individual addition stations under the individual sample tubes, so that the organic solvents, human body fluids and other solutions are separated.
- the amount of hazardous waste is therefore reduced considerably, and some of the solutions can also be reused after cleaning steps.
- Another advantage is that with the method according to the invention, unattended operation of the device is no longer necessary. So it is common in the known devices that the sample preparation is carried out automatically overnight, so that the prepared samples can then be analyzed during the day.
- the device for carrying out the method according to the invention contains at least two indication devices through which a sample to be examined and one or more substances necessary for the preparation can be dispensed in a predetermined sequence, and one or more devices for receiving sample tubes, the at least one two dispensing devices are arranged spatially separated from one another in the device, ie have such a distance from one another that the addition of the sample and all substances into a sample tube possibly located in a device for receiving sample tubes only by moving the sample tube (or the device containing the sample tube for receiving sample tubes) and the dispensing devices against each other is possible.
- the device preferably contains automatic feed devices with, inter alia, storage containers and connecting lines.
- the automatic feeders generally also have a conventional pump, which on the one hand connects to a dispensing device via a conventional connecting line (for example made of plastic) and on the other hand via a connection line is connected to a storage vessel in which there is a solution necessary for sample preparation.
- the pump used can also be connected to a device which, in a known manner, takes various submitted samples one after the other.
- the pump is also controlled in a known manner via a computer system, so that the time of addition and volume of the added solutions, gases or samples are specified.
- the dispensing devices are, for example, syringes or cannulas made of metal or plastic, which are attached in the device according to the invention and are connected to pumps and storage containers via the connecting lines. Therefore, a single dispensing device can also consist of several, for example, three individual needles or hoses, each of which is separately connected via connecting lines and a pump to a respectively assigned storage container. However, the individual delivery devices preferably end in a single needle and preferably have two or three separate accesses. This makes it possible for different substances to be fed from different storage containers via their own pumps and lines via the individual inlet to a single dispensing device and to be introduced into the needle.
- the individual delivery devices can also have more than three inlets.
- the dispenser also preferably has a spring-loaded seal that fits snugly on the top opening of the sample tubes. If the sample tubes are moved to the individual delivery devices or vice versa, the delivery devices can be placed on the sample tubes and close tightly from.
- the device according to the invention preferably has a lower and an upper level, and on the upper level of the device there are at least two, preferably three to eight dispensing devices, while on the lower level there are several devices for receiving sample tubes in the form of There are recesses or sample tubes inserted into the recesses.
- the dispensers and recesses / sample tubes are arranged so that the dispensers are each directly above a recess / sample tube, the distance between two dispensers is the distance between two recesses / sample tubes, or a multiple thereof, and that the lower and upper levels are mutually displaceable.
- the lower level is preferably a turntable and the upper level is preferably a circular disk, but other, for example band-shaped (linear) embodiments are also possible.
- the upper and lower levels are usually connected to each other by a rod.
- the respective solvent or the respective gas is first conveyed from the various dispensing devices into assigned sample tubes.
- the upper level is moved via the rod that connects it to the lower level and by a known motor drive (electrically or pneumatically) that is adjusted via a computer program to the addition of the various solutions and gases is controlled, raised.
- the upper level must be raised so far that the delivery devices no longer reach into the sample tubes.
- the lower level is then rotated while the upper level remains unchanged so that each sample tube is transported to the adjacent dispenser (if any).
- the lower level is preferably rotated via a stepper motor (electrically or pneumatically operated) which, like the motor for lifting the upper level, is controlled via a computer program in accordance with the addition of the solutions and gases.
- a stepper motor electrically or pneumatically operated
- the upper level is lowered again, so that the dispensing devices preferably protrude approximately 2 mm into the sample tube and preferably close off the sample tube via the seals located at their lower ends. Now the further addition takes place and the turning process is then repeated until the sample preparation is completed.
- the lower level is lowered, the upper level is rotated and then the lower level is raised again.
- the vertical movement can take place pneumatically.
- the device has a known device at a front end, with which fresh sample tubes are inserted into the lower level before the first addition station, and also a known device at the rear end of the lower level, with which the used sample tubes automatically after the last one Addition station can be removed from the lower level and discarded.
- the upper level has a recess.
- the device according to the invention can be used for a large number of different sample preparations, the number of addition steps varying, some of the dispensing devices are sometimes not activated in the individual applications, ie these dispensing devices are then not included Pumps etc. connected or dismantled, so that no additions are made at these stations.
- a device is provided in order to forward the prepared sample directly to an analysis device.
- a pan or funnel e.g. made of brass
- a pan or funnel can be provided under the sample tube for this, which merges into a hose or a fixed line that connects directly to the
- the entire predetermined elution volume can be supplied to the injector of the analysis unit via the pan or funnel and the line.
- the prepared samples can also be transferred to two or more analysis devices. For example, a first finished sample is analyzed by a first analysis device, a second finished sample by a second analysis device, a third finished sample again by the first analysis device, a fourth finished sample again by the second analysis device, etc .
- the analysis unit is selected depending on the substance to be analyzed. For example, HPLC, MS, GC-MS, IR or NMR are suitable, the actual analysis in the analysis unit being carried out in a known manner. If the analysis unit is an HPLC device, for example, the elution solution is introduced into the injection loop of the HPLC injector. If the elution volume is chosen to be larger than the volume of the injection loop, it is ensured that the injection loop is always filled and that the analysis device always receives the same volume to be analyzed.
- Reagent 1 Conditioning reagent (glacial acetic acid / water / ethanol
- Reagent 2 washing reagent 1 (sodium acetate 2M)
- Reagent 3 washing reagent 2 (acetic acid 2N / water / ethanol (1/1/2 v / v / v))
- Reagent 4 elution reagent (0.5 M phosphoric acid)
- the sample preparation machine has 5 workstations for sample preparation of vanillin-mandelic acid from urine, the analysis is carried out by HPLC.
- Station 1 dosing of reagent 1
- the first sample preparation column is positioned under station 1.
- the upper plate moves down and 3 ml of reagent 1 is conveyed over the column.
- the plate starts up again.
- the lower plate rotates one position.
- the first pillar is now under station 2, the second under station 1.
- the upper plate moves down.
- 0.5 ml patient urine is now delivered through the first column.
- 3 ml of reagent 1 are conveyed over columns 2.
- the plate rotates one position.
- the first pillar is now under station 3, the second under station 2 and the third under station 1.
- the upper plate moves down. 3 ml of reagent 2 are now conveyed over the first column. Via the second tube 0.5 ml patient urine and via the third 3 ml reagent 1.
- the plate rotates one position.
- the first column is now under station 4, the second under station 3, etc. 3 ml of reagent 3 is delivered via the first column, 3 ml of reagent 2 via the second tube, 0.5 ml patient urine via the third and 3 ml via the fourth Reagent 1.
- the plate rotates one position.
- About the second column 3 ml of reagent 3, about the third 3 ml of reagent 2, etc. (Even if it is not expressly mentioned in the individual work cycles, it goes without saying that the plate is lowered after taking a new position and on At the end of each work cycle.)
- the first sample is now finished and injected into the HPLC system. With each additional work cycle, another rehearsal then went through the entire preparation procedure.
- the number and type of reagents can vary for the different types of analysis. Therefore, the number of activated stations in the machine can vary. With the different reagents, the dosed quantities can of course also differ.
- An embodiment of the invention is shown in the drawing and will be described in more detail below. Show it:
- Figure 1 is a plan view of a device according to the invention
- Figure 2 is a side view of the device of Figure 1.
- Figure 3 shows a section through a single delivery device with an associated sample tube.
- the exemplary embodiment of a device for automatic sample preparation shown in the drawing has a circular disk 10 and a rotary plate 12 arranged concentrically below it, both of which are arranged horizontally.
- the screeching disc 10 is supported by a vertical rod 30 and can be raised and lowered by means of a mechanism, not shown in detail.
- the turntable 12 can be rotated step by step around the rod 30 by means of a mechanism, also not shown in detail.
- Dispensing devices 14/1 to 14 / N are provided in circular disk 10 at the same radial distance from the center point and at the same angular distance, to which three connecting lines 20 (shown only in FIG. 2 for dispensing device 14/1) are connected via three inlets 15 are.
- holes 18 are provided at the same radial distance and at the same angular distance as in the dispensing devices 14, in which there are sample tubes 26 which are open at the top and have an adsorbent 28 at the bottom.
- the sample tubes 26 are aligned with the dispensing devices 14, and the increment of rotation of the turntable 12 corresponds to the distance between two dispensing devices 14.
- the sample tubes 26 are inserted or removed in the receiving bores 18.
- the circular disc 10 is cut out at a point 34.
- FIG. 3 shows in detail a dispensing device 14 and a sample tube 26 located below (only partially shown).
- the dispensing device 14 has a needle-shaped element 42 which is vertically displaceable in a bore 34 of the (only partially shown) circular disc 10, the two End positions are limited by an upper and a lower annular thickening 36, 38 on the outside of the needle element 42.
- the needle element 42 is pressed into its lower end position by a helical compression spring 22 on the needle element 42 between the underside of the circular disk 10 and the lower thickening 38.
- Below the lower thickening 38 there is also a disk-shaped sealing element 24 which, when the circular disk 10 is lowered, lies tightly on the opening edge of the sample tube 26.
- a sample tube 26 is inserted into the receptacle 18 (FIG. 1) at the insertion station 16.
- the turntable 12 (only partially shown in FIG. 3) is gradually rotated counterclockwise in the work cycle, each sample tube 26 passing through the first work cycle after being inserted into the receiving bore 18 under the first dispenser 14/1, and then under each work cycle next delivery device 14 arrives until the last delivery device 14 / N. With the last cycle, the sample tube 26 is then moved back into the recess 34 of the circular disk 10, where it is removed.
- the circular disk 10 is lowered with the dispensing devices 14, so that the seals 24 each rest on the opening edges of the sample tubes 26.
- the first and second dispensing devices 14/1 and 14/2 each dispense 500 ⁇ l of reagents into the sample tubes.
- the third delivery device 14/3 the blood or urine to be examined is sample placed in the sample tube 26.
- the other dispensing devices 14/4 to 14 / Nl supply different rinsing solutions.
- An eluent is fed to the last dispensing device 14 / N, through which the sample is eluted.
- the sample is forwarded to an analysis device via a line.
- the circular plate 10 is then raised again and the turntable 12 is rotated one step further, so that each sample tube 26 passes under the next dispensing device 14.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
- Automatic Analysis And Handling Materials Therefor (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19925658 | 1999-06-04 | ||
DE19925658A DE19925658C2 (de) | 1999-06-04 | 1999-06-04 | Vorrichtung zur automatischen Probenvorbereitung und deren Verwendung |
PCT/EP2000/005035 WO2000075671A1 (de) | 1999-06-04 | 2000-06-02 | Verfahren und vorrichtung zur automatischen probenvorbereitung |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1200840A1 true EP1200840A1 (de) | 2002-05-02 |
Family
ID=7910266
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00938728A Withdrawn EP1200840A1 (de) | 1999-06-04 | 2000-06-02 | Verfahren und vorrichtung zur automatischen probenvorbereitung |
Country Status (5)
Country | Link |
---|---|
US (1) | US20020051736A1 (de) |
EP (1) | EP1200840A1 (de) |
AU (1) | AU5400100A (de) |
DE (1) | DE19925658C2 (de) |
WO (1) | WO2000075671A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7628954B2 (en) * | 2005-05-04 | 2009-12-08 | Abbott Laboratories, Inc. | Reagent and sample handling device for automatic testing system |
US8293532B2 (en) | 2009-03-26 | 2012-10-23 | Dow AgroSciences, L.L.C. | Method and apparatus for tissue transfer |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4186187A (en) * | 1972-07-24 | 1980-01-29 | California Institute Of Technology | Sample processor for the automatic extraction of families of compounds from liquid samples and/or homogenized solid samples suspended in a liquid |
US4221568A (en) * | 1979-01-17 | 1980-09-09 | Jet Propulsion Laboratory | Sample processor for chemical analysis |
GB2108659B (en) * | 1981-08-20 | 1985-09-04 | Burkard Scient | Automatic sample preparation apparatus |
DE3402304C3 (de) * | 1983-01-24 | 1995-11-09 | Olympus Optical Co | Verfahren für die automatische immunologische Analyse |
JPH0690211B2 (ja) * | 1984-09-21 | 1994-11-14 | オリンパス光学工業株式会社 | 免疫学的分析装置およびその方法 |
FR2572180B1 (fr) * | 1984-10-24 | 1987-03-20 | Eric Marteau D Autry | Procede et appareil de reparation d'echantillons a des fins d'analyse |
ZA854221B (de) * | 1985-06-04 | 1985-12-09 | ||
JP2510152B2 (ja) * | 1985-11-19 | 1996-06-26 | オリンパス光学工業株式会社 | 自動分析装置 |
US4798095A (en) * | 1986-04-30 | 1989-01-17 | Teruaki Itoh | Apparatus for distributing liquid samples among test tubes and for dividing the test tubes into groups |
DE3908725A1 (de) * | 1989-03-14 | 1990-09-20 | Schering Ag | Automatisch arbeitende vorrichtung zur gleichzeitigen und standardisierten durchfuehrung einer anzahl chemischer, physikalisch-chemischer oder biologischer arbeitsverfahren |
JPH0820426B2 (ja) * | 1989-10-20 | 1996-03-04 | 株式会社日立製作所 | 液体クロマトグラフ分析計およびプレラベル反応処理方法 |
US5045208A (en) * | 1989-10-27 | 1991-09-03 | Helena Laboratories Corporation | Column analyzer system |
US5585068A (en) * | 1990-02-20 | 1996-12-17 | Biochemical Diagnostics, Inc. | Apparatus for automatically separating a compound from a plurality of discrete liquid specimens |
DE4118886A1 (de) * | 1991-06-10 | 1992-12-17 | Ismatec S A | Probenbehandlungsapparat |
JP2526753B2 (ja) * | 1991-09-26 | 1996-08-21 | 株式会社島津製作所 | 固形製剤溶出試験用試料処理装置 |
DE69224380T2 (de) * | 1992-08-04 | 1998-05-20 | Hewlett Packard Gmbh | Vorrichtung zur Behandlung von Fiolen in einem "Analyseapparat" |
FR2760843B1 (fr) * | 1997-03-14 | 1999-05-28 | Gilson Med Electr | Appareil de preparation d'echantillons avec ascenseur |
DE29719919U1 (de) * | 1997-11-10 | 1999-04-01 | Jung, Günther, Prof. Dr., 72076 Tübingen | Reaktoreinheit zur parallelen Durchführung einer Vielzahl chemischer Reaktionen |
-
1999
- 1999-06-04 DE DE19925658A patent/DE19925658C2/de not_active Expired - Fee Related
-
2000
- 2000-06-02 WO PCT/EP2000/005035 patent/WO2000075671A1/de active Application Filing
- 2000-06-02 EP EP00938728A patent/EP1200840A1/de not_active Withdrawn
- 2000-06-02 AU AU54001/00A patent/AU5400100A/en not_active Abandoned
-
2001
- 2001-12-04 US US10/012,124 patent/US20020051736A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO0075671A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2000075671A1 (de) | 2000-12-14 |
US20020051736A1 (en) | 2002-05-02 |
AU5400100A (en) | 2000-12-28 |
DE19925658A1 (de) | 2000-12-21 |
DE19925658C2 (de) | 2002-04-18 |
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