CN118190926A - Method for rapidly detecting aniline in water - Google Patents
Method for rapidly detecting aniline in water Download PDFInfo
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- CN118190926A CN118190926A CN202410427116.7A CN202410427116A CN118190926A CN 118190926 A CN118190926 A CN 118190926A CN 202410427116 A CN202410427116 A CN 202410427116A CN 118190926 A CN118190926 A CN 118190926A
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- water
- water sample
- aniline
- reagent
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- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 title claims abstract description 80
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000001514 detection method Methods 0.000 claims abstract description 28
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 21
- 238000012360 testing method Methods 0.000 claims abstract description 16
- 239000012153 distilled water Substances 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims abstract description 12
- JTNCEQNHURODLX-UHFFFAOYSA-N 2-phenylethanimidamide Chemical compound NC(=N)CC1=CC=CC=C1 JTNCEQNHURODLX-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000011010 flushing procedure Methods 0.000 claims abstract description 4
- 229910000343 potassium bisulfate Inorganic materials 0.000 claims abstract description 4
- 238000002474 experimental method Methods 0.000 claims description 8
- GEHMBYLTCISYNY-UHFFFAOYSA-N Ammonium sulfamate Chemical compound [NH4+].NS([O-])(=O)=O GEHMBYLTCISYNY-UHFFFAOYSA-N 0.000 claims description 3
- IOVCWXUNBOPUCH-UHFFFAOYSA-N Nitrous acid Chemical compound ON=O IOVCWXUNBOPUCH-UHFFFAOYSA-N 0.000 claims description 3
- WZRRZVUZWWMSKH-UHFFFAOYSA-N n'-naphthalen-1-ylethane-1,2-diamine;hydrochloride Chemical compound Cl.C1=CC=C2C(NCCN)=CC=CC2=C1 WZRRZVUZWWMSKH-UHFFFAOYSA-N 0.000 claims description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 2
- 238000004042 decolorization Methods 0.000 claims description 2
- 239000000243 solution Substances 0.000 claims 2
- 239000012895 dilution Substances 0.000 claims 1
- 238000010790 dilution Methods 0.000 claims 1
- 238000003672 processing method Methods 0.000 abstract 1
- 238000004458 analytical method Methods 0.000 description 5
- 239000002351 wastewater Substances 0.000 description 5
- 230000007774 longterm Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000575 pesticide Substances 0.000 description 2
- 238000002798 spectrophotometry method Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 231100000304 hepatotoxicity Toxicity 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004451 qualitative analysis Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
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- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Plasma & Fusion (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)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
Abstract
The invention discloses a method for rapidly detecting aniline in water quality, and belongs to the field of water quality detection environment protection. The processing method comprises the following steps: s1, flushing a colorimetric tube with a plug for 3 times by using a water sample to be detected; s2, taking 1ml of a water sample to be detected into the washed colorimetric tube, adding distilled water to dilute the water sample to 10ml, sequentially adding 0.05g of potassium bisulfate, shaking the water sample uniformly, and controlling the PH value of the water sample to be 1.5-2 by using precise PH test paper; s3, adding the reagent 1, shaking uniformly, and placing the mixture on a test tube rack for 3min; s4, adding the reagent 2, shaking uniformly, and placing the mixture on a test tube rack for 3min; s5, adding the reagent 3, fixing the volume to 25ml by using distilled water, shaking uniformly, and placing the mixture on a test tube rack for 30min; and S6, attaching the colorimetric tube to the colorimetric card, and comparing the color of the colorimetric tube with that of the colorimetric card to obtain the aniline content of the water sample to be detected. And comparing the color of the sample with the color of the colorimetric card to obtain the aniline content of the water sample to be detected. The method has the advantages of simple field operation, no need of any equipment, rapid and sensitive reaction, and capability of detecting 5-50mg/L of aniline.
Description
Technical Field
The invention belongs to the field of water quality detection environment protection, and relates to a method for rapidly detecting aniline in water
Background
Aniline is a colorless or yellowish oily liquid with a strong odor. Aniline is one of the most important intermediates in the dye industry, and is also an important raw material for pesticides and rubber additives, so that aniline is widely used in production wastewater in the industries of printing, dyeing, rubber, pesticides and the like. However, the aniline wastewater is harmful to the environment, when the aniline concentration in the wastewater exceeds 100mg/L, the aniline wastewater has extremely high toxicity to aquatic organisms and human bodies, and even long-term low-concentration contact can cause toxic liver diseases of the human bodies, so the aniline wastewater is an important treatment point for water treatment in the environment-friendly industry.
At present, the water quality detection and analysis of the aniline are long-term dependent on the analysis and detection from the site sampling to the laboratory, and the time is long, which is unfavorable for technical treatment and diagnosis of engineering site personnel, so that the on-site rapid detection method which is convenient, simple and rapid to operate and can adhere to the low-concentration aniline range is urgently needed.
Disclosure of Invention
Aiming at the problems in the prior art, the invention discloses a method for rapidly detecting aniline in water, which has the advantages of simple operation and high reaction efficiency, and can rapidly detect the aniline content in the range of 5-50 mg/L.
A method for rapidly detecting aniline in water quality, which is characterized by comprising the following steps:
S1, flushing a colorimetric tube with a plug with a scale and a capacity of 25ml for 3 times by using a water sample to be detected;
S2, taking 1ml of a water sample to be detected into the washed colorimetric tube, adding distilled water to dilute the water sample to 10ml, sequentially adding 0.05g of potassium bisulfate, shaking the water sample uniformly, and controlling the PH value of the water sample to be 1.5-2 by using precise PH test paper;
S3, adding the reagent 1 (1 drop), shaking uniformly, and placing the mixture on a test tube rack for 3min;
s4, adding reagent 2 (0.5 ml), shaking uniformly, and placing the mixture on a test tube rack for 3min;
s5, adding reagent 3 (1 ml), fixing the volume to 25ml by using distilled water, shaking uniformly, and placing the mixture on a test tube rack for 30min;
And S6, attaching the colorimetric tube to the colorimetric card, and comparing the color of the colorimetric tube with that of the colorimetric card to obtain the aniline content of the water sample to be detected.
Alternatively, the reagent 1 is a 5% nitrous acid solution.
Optionally, the reagent 2 is an ammonia sulfamate solution.
Optionally, the reagent 3 is N- (1-naphthyl) ethylenediamine hydrochloride solution.
Optionally, the blank control is to select distilled water as a water sample to be detected, and the rest steps are consistent with the water sample to be detected. Optionally, the method can dilute or select decolorization treatment for the water sample with dark color, then perform detection experiment, and appropriately increase the repeated experiment times so as to eliminate the influence of original chromaticity as much as possible.
Optionally, the aniline detection range of the colorimetric card is 5-50mg/L.
Compared with the prior art, the invention has the beneficial effects that:
1. The aniline concentration is displayed by utilizing different aniline contents and different colors of the medicament, and the analysis method is simple, quick and convenient, and is suitable for on-site water quality quick detection qualitative analysis such as environmental protection and industrial wastewater detection.
2. The method is very simple, does not need any equipment and is not limited by the detection environment and the place. The water sample analyzer has the advantages of small volume, light weight, convenient carrying and capability of completing analysis of a plurality of water samples in a short time.
3. The detection cost is low, the professional technical requirements of the testers are low, and the operation is only needed according to the operation steps.
4. The aniline content of the water sample to be detected can be obtained by comparing the color of the water sample with the color of the colorimetric card. The method has the advantages of simple field operation, no need of any equipment, rapid and sensitive reaction, and capability of detecting 5-50mg/L of aniline. The invention provides a method for rapidly detecting aniline in water, which has reasonable design, simple and convenient field operation and economy.
Drawings
FIG. 1 shows a colorimetric card for a method for rapidly detecting aniline in water.
Detailed Description
The present invention will be described in further detail with reference to the following examples, for the purpose of making the objects, technical solutions, and effects of the present invention more apparent. It should be noted that the detailed description herein is for purposes of illustration only and is not intended to limit the invention.
A method for rapidly detecting aniline in water quality, which is characterized by comprising the following steps:
S1, flushing a colorimetric tube with a plug with a scale and a capacity of 25ml for 3 times by using a water sample to be detected;
S2, taking 1ml of a water sample to be detected into the washed colorimetric tube, adding distilled water to dilute the water sample to 10ml, sequentially adding 0.05g of potassium bisulfate, shaking the water sample uniformly, and controlling the PH value of the water sample to be 1.5-2 by using precise PH test paper;
S3, adding the reagent 1 (1 drop, 0.05 ML), shaking uniformly, and placing the mixture on a test tube rack for 3min;
s4, adding reagent 2 (0.5 ml), shaking uniformly, and placing the mixture on a test tube rack for 3min;
s5, adding reagent 3 (1 ml), fixing the volume to 25ml by using distilled water, shaking uniformly, and placing the mixture on a test tube rack for 30min;
And S6, attaching the colorimetric tube to the colorimetric card, and comparing the color of the colorimetric tube with that of the colorimetric card to obtain the aniline content of the water sample to be detected.
Wherein the reagent 1 is a 5% nitrous acid solution; the reagent 2 is sulfamic acid ammonia solution; the reagent 3 is N- (1-naphthyl) ethylenediamine hydrochloride solution.
Wherein, the blank control is to select distilled water as the water sample to be detected, and the rest steps are consistent with the water sample to be detected.
The method comprises the steps of diluting or selecting a water sample with a dark color, performing detection experiments, and properly increasing the repeated experiment times to eliminate the influence of the original chromaticity as much as possible.
The following specific examples describe the application of the method for rapidly detecting aniline in water: example 1
3 Water samples to be detected are selected for aniline content detection, distilled water is selected as a control group, and analysis and detection results show that the detection result of the water sample 1 is 3-4mg/L, the detection result of the water sample 2 is 20mg/L, and the detection result of the water sample 3 is 35-40mg/L. And 3 water samples are subjected to aniline content detection according to a national standard spectrophotometry (GB 11889-89), wherein the detection result of the national standard spectrophotometry is that the detection result of the water sample 1 is 5mg/L, the detection result of the water sample 2 is 20mg/L, and the detection result of the water sample 3 is 40mg/L. The detection comparison results of different methods show that the accuracy of the method for rapidly detecting the aniline in the water quality provided by the invention can meet the application requirements, and the table 1 is a comparison between the sample detection result in the example 1 and the national standard method detection result in the method for rapidly detecting the aniline in the water quality;
TABLE 1
The foregoing is merely a preferred embodiment of the invention, and it should be noted that modifications could be made by those skilled in the art without departing from the principles of the invention, which modifications would also be considered to be within the scope of the invention.
Claims (4)
1. A method for rapidly detecting aniline in water quality is characterized by comprising the following steps:
S1, flushing a colorimetric tube with a plug for 3 times by using a water sample to be detected;
S2, taking 1ml of a water sample to be detected into the washed colorimetric tube, adding distilled water to dilute the water sample to 10ml, sequentially adding 0.05g of potassium bisulfate, shaking the water sample uniformly, and controlling the PH value of the water sample to be 1.5-2 by using precise PH test paper;
S3, adding the reagent 1 (0.05 ML), shaking uniformly, and placing the mixture on a test tube rack for 3min;
s4, adding reagent 2 (0.5 ml), shaking uniformly, and placing the mixture on a test tube rack for 3min;
S5, adding reagent 3 (1 ml), fixing the volume to 25ml by using distilled water, shaking uniformly, and placing the mixture on a test tube rack for 30min;
s6, attaching the colorimetric tube to a color chart, and comparing the color of the colorimetric tube with the color of the color chart to obtain the aniline content of the water sample to be detected;
The reagent 1 is a 5% nitrous acid solution; the reagent 2 is sulfamic acid ammonia solution; the reagent 3 is N- (1-naphthyl) ethylenediamine hydrochloride solution.
2. The method for rapid detection of aniline in water according to claim 1, wherein in the method, a blank experiment is further required as a control; the blank group experiment is to select distilled water as a water sample to be detected, and the rest steps are consistent with the water sample to be detected.
3. The method for rapidly detecting aniline in water according to claim 1, wherein the detection experiment is performed after the dilution or the selective decolorization treatment of the water sample with a color depth of more than 8 times, and the number of repeated experiments is increased appropriately to eliminate the influence of the original color as much as possible.
4. The method for rapidly detecting aniline in water according to claim 1, wherein the aniline detection range of the colorimetric card is 5-50mg/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410427116.7A CN118190926A (en) | 2024-04-10 | 2024-04-10 | Method for rapidly detecting aniline in water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410427116.7A CN118190926A (en) | 2024-04-10 | 2024-04-10 | Method for rapidly detecting aniline in water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118190926A true CN118190926A (en) | 2024-06-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410427116.7A Pending CN118190926A (en) | 2024-04-10 | 2024-04-10 | Method for rapidly detecting aniline in water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118190926A (en) |
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2024
- 2024-04-10 CN CN202410427116.7A patent/CN118190926A/en active Pending
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