CN114324307B - Analysis method based on inductively coupled plasma technology - Google Patents
Analysis method based on inductively coupled plasma technology Download PDFInfo
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- CN114324307B CN114324307B CN202111557687.5A CN202111557687A CN114324307B CN 114324307 B CN114324307 B CN 114324307B CN 202111557687 A CN202111557687 A CN 202111557687A CN 114324307 B CN114324307 B CN 114324307B
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- characteristic spectral
- electric signal
- intensity
- light intensity
- torch tube
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- 238000009616 inductively coupled plasma Methods 0.000 title claims abstract description 13
- 238000004458 analytical method Methods 0.000 title claims abstract description 12
- 230000003595 spectral effect Effects 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 2
- 229910052791 calcium Inorganic materials 0.000 claims description 2
- 239000011575 calcium Substances 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 239000011777 magnesium Substances 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000921 elemental analysis Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
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- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The invention provides an analysis method based on an inductively coupled plasma technology, which comprises the following steps of: (A1) In the materials used by the torch tube, characteristic spectral lines of main elements and characteristic spectral lines of secondary elements are selected, and electric signal thresholds corresponding to the characteristic spectral lines are respectively established; (A2) The torch tube is ignited, and the detector outputs the light intensity of the characteristic spectral line of the main element and the light intensity of the characteristic spectral line of the secondary element; (A3) Converting the light intensity of each characteristic spectral line into electric signal intensity; (A4) comparing the electrical signal strength to an electrical signal threshold; if the intensity of each electric signal exceeds the corresponding electric signal threshold value, a flameout instruction is sent out; (A5) And the controller closes the torch tube according to the flameout command. The invention has the advantages of accurate identification, good protection effect and the like.
Description
Technical Field
The invention relates to elemental analysis, in particular to an analysis method based on inductively coupled plasma technology.
Background
In conventional ICP spectrometers, the torch tube can be burned due to problems such as rust or distortion of the coil, or small amounts of cooling and auxiliary gas flow.
At present, a method for detecting Si element is available, because the material of the tube contains a large amount of Si element, the Si element in the torch tube is ionized due to high temperature before the torch tube is burnt, at this time, by detecting the content of Si element, when the Si element is larger than a certain value, the instrument cancels the ignition state to test the torch tube in program, and the protection of the torch tube is not completely accurate because the Si element is used as a single detection point, and cannot be completely avoided when the torch tube is burnt too fast.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides an analysis method based on an inductively coupled plasma technology.
The invention aims at realizing the following technical scheme:
the analysis method based on the inductively coupled plasma technology comprises the following steps:
(A1) In the materials used by the torch tube, characteristic spectral lines of main elements and characteristic spectral lines of secondary elements are selected, and electric signal thresholds corresponding to the characteristic spectral lines are respectively established;
(A2) The torch tube is ignited, and the detector outputs the light intensity of the characteristic spectral line of the main element and the light intensity of the characteristic spectral line of the secondary element;
(A3) Converting the light intensity of each characteristic spectral line into electric signal intensity;
(A4) Comparing the electrical signal intensity with an electrical signal threshold;
if the intensity of each electric signal exceeds the corresponding electric signal threshold value, a flameout instruction is sent out;
(A5) And the controller closes the torch tube according to the flameout command.
Compared with the prior art, the invention has the following beneficial effects:
1. the identification is accurate;
identifying whether the torch tube has a burning tendency or not by utilizing detection areas of main elements and secondary elements in the torch tube material, and developing corresponding measures according to identification results: flameout or continued power up is known to be successful;
the ignition power is continuously improved, the content of elements is monitored in real time, and the identification accuracy is further improved;
2. the protection effect is good;
the torch tube is effectively protected when it is treated by a flame which is a tendency to burn out.
Drawings
The present disclosure will become more readily understood with reference to the accompanying drawings. As will be readily appreciated by those skilled in the art: the drawings are only for illustrating the technical scheme of the present invention and are not intended to limit the scope of the present invention. In the figure:
fig. 1 is a flow chart of an analysis method based on inductively coupled plasma technology in accordance with an embodiment of the present invention.
Detailed Description
Fig. 1 and the following description depict alternative embodiments of the invention to teach those skilled in the art how to make and reproduce the invention. For the purpose of explaining the technical solution of the present invention, some conventional aspects have been simplified or omitted. Those skilled in the art will appreciate variations or alternatives derived from these embodiments that fall within the scope of the invention. Those skilled in the art will appreciate that the features described below can be combined in various ways to form multiple variations of the invention. Thus, the invention is not limited to the following alternative embodiments, but only by the claims and their equivalents.
Example 1:
fig. 1 shows a schematic flow chart of an analysis method based on an inductively coupled plasma technology according to an embodiment of the present invention, as shown in fig. 1, the analysis method based on the inductively coupled plasma technology includes the following steps:
(A1) In the materials used by the torch tube, characteristic spectral lines of main elements and characteristic spectral lines of secondary elements are selected, and electric signal thresholds corresponding to the characteristic spectral lines are respectively established;
(A2) The torch tube is ignited, and the detector outputs the light intensity of the characteristic spectral line of the main element and the light intensity of the characteristic spectral line of the secondary element;
(A3) Converting the light intensity of each characteristic spectral line into electric signal intensity;
(A4) Comparing the electrical signal intensity with an electrical signal threshold;
if the intensity of each electric signal exceeds the corresponding electric signal threshold value, a flameout instruction is sent out;
(A5) And the controller closes the torch tube according to the flameout command.
In order to detect the torch tube in real time, further, in step (A4), if at least one of the electrical signal intensities does not exceed the corresponding electrical signal threshold, the torch tube operating power is increased, and step (A2) is entered.
In order to accurately compare the light intensity with the threshold, further, in step (A3), the manner of conversion is:
i=α·a, I is the electrical signal intensity, α is the conversion efficiency, and a is the light intensity.
Example 2:
an analysis method based on inductively coupled plasma technology and an application example of the method according to embodiment 1 of the present invention.
In this application example, as shown in fig. 1, the analysis method based on the inductively coupled plasma technology includes the following steps:
(A1) In the materials used for the torch tube, selecting the characteristic spectral line of main element silicon and the characteristic spectral lines of secondary elements calcium and magnesium, and respectively establishing an electric signal threshold corresponding to the characteristic spectral lines;
(A2) The torch tube is ignited at 750W, and the detector outputs the light intensity of the characteristic spectral line of the main element and the light intensity of the characteristic spectral line of the secondary element;
(A3) The light intensity of each characteristic spectral line is converted into the electric signal intensity by the following conversion modes:
i=α·a, I is the electrical signal intensity, α is the conversion efficiency, and a is the light intensity;
(A4) Comparing the electrical signal intensity with an electrical signal threshold;
if the intensity of each electric signal exceeds the corresponding electric signal threshold value, sending out a flameout command, and entering the step (A5);
if at least one of the electric signal intensities does not exceed the corresponding electric signal threshold value, the operation power of the torch tube is increased, and the step (A2) is carried out until the power reaches 1150W, and the ignition process is completed;
(A5) And the controller closes the torch tube according to the flameout command.
Claims (2)
1. The analysis method based on the inductively coupled plasma technology is characterized by comprising the following steps of:
(A1) In the materials used by the torch tube, characteristic spectral lines of main elements and characteristic spectral lines of secondary elements are selected, and electric signal thresholds corresponding to the characteristic spectral lines are respectively established; the host element is silicon and the minor elements are calcium and magnesium;
(A2) The torch tube is ignited, and the detector outputs the light intensity of the characteristic spectral line of the main element and the light intensity of the characteristic spectral line of the secondary element;
(A3) Converting the light intensity of each characteristic spectral line into electric signal intensity;
(A4) Comparing the electrical signal intensity with an electrical signal threshold;
if the intensity of each electric signal exceeds the corresponding electric signal threshold value, a flameout instruction is sent out;
if at least one of the electric signal intensities does not exceed the corresponding electric signal threshold value, increasing the operating power of the torch tube, and entering the step (A2);
(A5) And the controller closes the torch tube according to the flameout command.
2. The method of claim 1, wherein in step (A3), the conversion is performed by:
i=α·a, I is the electrical signal intensity, α is the conversion efficiency, and a is the light intensity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111557687.5A CN114324307B (en) | 2021-12-20 | 2021-12-20 | Analysis method based on inductively coupled plasma technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111557687.5A CN114324307B (en) | 2021-12-20 | 2021-12-20 | Analysis method based on inductively coupled plasma technology |
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| Publication Number | Publication Date |
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| CN114324307A CN114324307A (en) | 2022-04-12 |
| CN114324307B true CN114324307B (en) | 2024-02-13 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5332386A (en) * | 1992-07-01 | 1994-07-26 | Toyota Jidosha Kabushiki Kaisha | Combustion control method |
| JP2003232738A (en) * | 2002-02-06 | 2003-08-22 | Tdk Corp | Plasma torch for elemental analysis, analytical apparatus and method using the plasma torch, and protector for the plasma torch |
| CN201628687U (en) * | 2009-12-24 | 2010-11-10 | 江苏天瑞仪器股份有限公司 | Inductively-coupled plasma emission spectrometer |
| CN105067595A (en) * | 2015-07-24 | 2015-11-18 | 中国地质大学（武汉） | Adjustment method and adjustment apparatus of ICP ion source flame detection position |
| CN106198493A (en) * | 2015-05-27 | 2016-12-07 | 株式会社岛津制作所 | Inductively type plasma analyzer |
| CN108181374A (en) * | 2018-02-08 | 2018-06-19 | 聚光科技(杭州)股份有限公司 | The method of work of plasma-mass spectrometry system |
| JP2019175066A (en) * | 2018-03-28 | 2019-10-10 | Ｊｘｔｇエネルギー株式会社 | Monitoring device, monitoring system and monitoring method |
-
2021
- 2021-12-20 CN CN202111557687.5A patent/CN114324307B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5332386A (en) * | 1992-07-01 | 1994-07-26 | Toyota Jidosha Kabushiki Kaisha | Combustion control method |
| JP2003232738A (en) * | 2002-02-06 | 2003-08-22 | Tdk Corp | Plasma torch for elemental analysis, analytical apparatus and method using the plasma torch, and protector for the plasma torch |
| CN201628687U (en) * | 2009-12-24 | 2010-11-10 | 江苏天瑞仪器股份有限公司 | Inductively-coupled plasma emission spectrometer |
| CN106198493A (en) * | 2015-05-27 | 2016-12-07 | 株式会社岛津制作所 | Inductively type plasma analyzer |
| CN105067595A (en) * | 2015-07-24 | 2015-11-18 | 中国地质大学（武汉） | Adjustment method and adjustment apparatus of ICP ion source flame detection position |
| CN108181374A (en) * | 2018-02-08 | 2018-06-19 | 聚光科技(杭州)股份有限公司 | The method of work of plasma-mass spectrometry system |
| JP2019175066A (en) * | 2018-03-28 | 2019-10-10 | Ｊｘｔｇエネルギー株式会社 | Monitoring device, monitoring system and monitoring method |
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| CN114324307A (en) | 2022-04-12 |
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