CN107941726A - A kind of assay method of arsenic content in water body - Google Patents
A kind of assay method of arsenic content in water body Download PDFInfo
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- CN107941726A CN107941726A CN201711459549.7A CN201711459549A CN107941726A CN 107941726 A CN107941726 A CN 107941726A CN 201711459549 A CN201711459549 A CN 201711459549A CN 107941726 A CN107941726 A CN 107941726A
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- G—PHYSICS
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- 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
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
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Abstract
The present invention relates to water body detection technique field, more particularly to a kind of assay method of arsenic content in water body.Oxidizing manganese dioxide is dispersed in heating stirring in water body, by 3 in water body+Arsenic ion is all oxidized to 5+The toxicity of arsenic in water body when arsenic ion is to reduce detection, increases the security of detection.Pentavalent arsenic and molybdic acid are mutually made again of generation arsenic molybdic acid mixture, are finally reduced to molybdenum blue and develop the colors in boiling water the detection of progress arsenic content.The oxidizing low price arsenic ion of the present invention, avoids the generation of poisonous gaseous arsine, test mode is simple, and flow is condensed, securely and reliably.
Description
Technical field
The present invention relates to water body detection technique field, more particularly to a kind of assay method of arsenic content in water body.
Background technology
Arsenic is more well known a kind of element in our daily lifes, and ancient times arsenic is the oxide of arsenic.Arsenic content is certainly
Abundance in right boundary is the 20th.Detect in the world to have in 200 multi minerals at present and all contained arsenic element.Arsenic in these mineral
Desorption and dissolving be considered as arsenic in water body pollution the main reason for.And winter baths in hot spring increasingly becomes a kind of fashion, water body
It is particularly important that detection of middle arsenic content becomes.
The toxicity of trivalent arsenic is more than 50 times of pentavalent arsenic toxicity, traditional to make five by adding zinc granule into sample solution
The DDTC silver salt methods collected after valency arsenic (being first converted into trivalent arsenic) trivalent arsenic generation gaseous arsine, can generate gaseous arsine not
But the loss of arsenic can be caused in poisonous and cumbersome detection process, causes the error of detection.Trivalent arsenic is oxidized to pentavalent arsenic
Ozone is typically used in method as oxidant, but easily residue ozone and generation carcinogen in water body.
The content of the invention
In order to overcome above-mentioned problems of the prior art, the object of the present invention is to provide a kind of arsenic content in water body
Assay method.Use nontoxic manganese dioxide that the trivalent arsenic in water body is oxidized to pentavalent arsenic during heating for oxidant
It is detected by As-molybdenum blue method, processing method is simple, safety, and cost is low.
The present invention adopts the technical scheme that to achieve the above object：A kind of assay method of arsenic content in water body, it is special
Sign is：Comprise the following steps：
The first step：Configure arsenic ion standard solution：Arsenic trioxide is taken to add water and the sodium hydroxide solution 10mL of 0.01M,
Dissolve by heating in last constant volume 1000mL volumetric flasks, it is 0.01mg/mL to make the arsenic content in titer；
Second step：Draw standard curve：6,50mL volumetric flasks are taken to sequentially add arsenic titer 0.00/2.00/4.00/
6.00/8.00/10.00mL, the ammonium molybdate 2mL of constant volume 50mL additions 0.01-0.02M shakes up, and adds ascorbic acid 1-2mL and shakes
It is even, 2-3mL is taken, wavelength measures absorbance for 620nm；
3rd step：Spring water is taken, centrifuging and taking supernatant liquor does detection and uses；
4th step：Take above-mentioned sample to add the heating of 0.5-2g manganese dioxide, trivalent arsenic is fully converted to pentavalent arsenic progress
The detection of As-molybdenum blue method.
The quality of arsenic trioxide is 0.132g in the first step.
Spring water is 50mL in 3rd step.
The oxidizing low price arsenic ion of the present invention, avoids the generation of poisonous gaseous arsine, and test mode is simple,
Flow is condensed, securely and reliably.
Embodiment
For a better understanding of the present invention, with reference to the embodiment content that the present invention is furture elucidated, but the present invention
Content is not limited solely to the following examples.
Embodiment 1
A kind of assay method of arsenic content in water body, specifically includes following steps：
1. configure arsenic ion standard solution.0.132g arsenic trioxides are taken to add water and the sodium hydroxide solution 10mL of 0.01M
Dissolve by heating in last constant volume 1000mL volumetric flasks.The arsenic content in titer is 0.01mg/mL at this time.
2. draw standard curve.6,50mL volumetric flasks are taken to sequentially add arsenic titer 0.00/2.00/4.00/6.00/
8.00/10.00mL, the ammonium molybdate 2mL of constant volume 50mL additions 0.01M shakes up, and adds ascorbic acid 1mL and shakes up, takes 2mL, ripple
A length of 620nm measures absorbance.
3. taking 4 parts of 50mL spring waters, centrifuging and taking supernatant liquor does detection and uses.
Trivalent arsenic is set to be fully converted to pentavalent arsenic progress arsenic molybdenum 4. taking two parts of above-mentioned samples to add the heating of 0.5g manganese dioxide
The detection of blue laws.
5. take remaining two parts of water samples addition zinc granule to make it be reduced to arsenic hydride to be detected by traditional approach.Several samples
The results are shown in Table 1.
1 the method for the present invention of table and conventional method detection results of comparison
Embodiment 2
A kind of each step of the assay method of arsenic content in water body described in the present embodiment is in the same manner as in Example 1,
Different technical parameters are：The ammonium molybdate 2.5mL that 0.01M is added in second step shakes up, and adds ascorbic acid 1.5mL and shakes up.
Embodiment 3
A kind of each step of the assay method of arsenic content in water body described in the present embodiment is in the same manner as in Example 1,
Different technical parameters are：The ammonium molybdate 3mL that 0.01M is added in second step shakes up, and adds ascorbic acid 2mL and shakes up.
Embodiment above describes the basic principle and advantage of the present invention, It should be understood by those skilled in the art that this hair
Bright to be not restricted to the described embodiments, in the case where not departing from its general principles and mentality of designing, the present invention also has various changes
Change and improve, these changes and improvements all fall within the protetion scope of the claimed invention.
Claims (3)
1. a kind of assay method of arsenic content in water body, it is characterized in that：Comprise the following steps：
The first step：Configure arsenic ion standard solution：Take arsenic trioxide to add water and the sodium hydroxide solution 10mL of 0.01M, heat
Dissolve in last constant volume 1000mL volumetric flasks, it is 0.01mg/mL to make the arsenic content in titer；
Second step：Draw standard curve：6,50mL volumetric flasks are taken to sequentially add arsenic titer 0.00/2.00/4.00/6.00/
8.00/10.00mL, the ammonium molybdate 2-3mL of constant volume 50mL additions 0.01M shakes up, and adds ascorbic acid 1-2mL and shakes up, takes
2mL, wavelength measure absorbance for 620nm；
3rd step：Spring water is taken, centrifuging and taking supernatant liquor does detection and uses；
4th step：Take above-mentioned sample to add the heating of 0.5g manganese dioxide, trivalent arsenic is fully converted to pentavalent arsenic and carry out As-molybdenum blue
The detection of method.
2. a kind of assay method of arsenic content in water body according to claim 1, it is characterized in that：Three oxygen in the first step
The quality for changing two arsenic is 0.132g.
3. a kind of assay method of arsenic content in water body according to claim 1, it is characterized in that：Hot spring in 3rd step
Water sample is 50mL.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711459549.7A CN107941726A (en) | 2017-12-28 | 2017-12-28 | A kind of assay method of arsenic content in water body |
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| CN201711459549.7A CN107941726A (en) | 2017-12-28 | 2017-12-28 | A kind of assay method of arsenic content in water body |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111499589A (en) * | 2020-04-21 | 2020-08-07 | 太原工业学院 | Transition metal substituted arsenic molybdate compound and preparation method and application thereof |
| CN112326571A (en) * | 2020-10-28 | 2021-02-05 | 中国科学院生态环境研究中心 | Quantitative detection method for pentavalent arsenic in water sample |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1675525A (en) * | 2002-08-21 | 2005-09-28 | 纽约市哥伦比亚大学托管会 | An arsenic meter |
| CN101788495A (en) * | 2010-01-29 | 2010-07-28 | 白银有色集团股份有限公司 | Method for measuring arsenic by iodine solution absorption method |
-
2017
- 2017-12-28 CN CN201711459549.7A patent/CN107941726A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1675525A (en) * | 2002-08-21 | 2005-09-28 | 纽约市哥伦比亚大学托管会 | An arsenic meter |
| CN101788495A (en) * | 2010-01-29 | 2010-07-28 | 白银有色集团股份有限公司 | Method for measuring arsenic by iodine solution absorption method |
Non-Patent Citations (2)
| Title |
|---|
| 王静远 等: "离子色谱法测定砷酸根、亚砷酸根、溴酸根、氯酸根及常见阴离", 《环境化学》 * |
| 钟志雄 等: "离子色谱法测定饮用水及底泥中砷酸盐和亚砷酸盐", 《理化检验-化学分册》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111499589A (en) * | 2020-04-21 | 2020-08-07 | 太原工业学院 | Transition metal substituted arsenic molybdate compound and preparation method and application thereof |
| CN112326571A (en) * | 2020-10-28 | 2021-02-05 | 中国科学院生态环境研究中心 | Quantitative detection method for pentavalent arsenic in water sample |
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Application publication date: 20180420 |