CN104596999A - Method for detecting and analyzing arsenic-polluted soil - Google Patents
Method for detecting and analyzing arsenic-polluted soil Download PDFInfo
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- CN104596999A CN104596999A CN201310530542.5A CN201310530542A CN104596999A CN 104596999 A CN104596999 A CN 104596999A CN 201310530542 A CN201310530542 A CN 201310530542A CN 104596999 A CN104596999 A CN 104596999A
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- perchloric acid
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Abstract
The invention relates to a method for detecting and analyzing arsenic-polluted soil, which is characterized by comprising the following steps: employing an aqua regia-perchloric acid digestion method, weighing 1.0000g soil sample, placing in an erlenmeyer flask, using a few of water for moistening, adding 7ml concentrated hydrochloric acid, then adding 3ml concentrated nitric acid, uniformly shaking, placing on an electric hot plate, after removing a brown nitrogen oxide at 120-150 DEG C, taking and cooling, adding 5ml perchloric acid along the wall of the erlenmeyer flask, continuously heating and digesting to generate thick white smoke, volatilizing most perchloric acid, wherein the color of the sample in the erlenmeyer flask is grey white, canceling cooling, transferring the liquid, and determining by a double channel-atomic fluorescence instrument. The method aims at detection and analysis of arsenic pollution of the environment planting soil, and has the advantages of sensitive and simple method as well as high data accuracy.
Description
Technical field
The present invention relates to soil pollution detection technique field, field, particularly the detection of As polluted soil and analytical approach.
Background technology
Arsenic is requisite trace element in biosome, and micro amount of arsenic has the effect suppressing oxidation, promote assimilation.As medicine, arsenic is early on the books in Chinese medicine ancient books and records, but takes in too much arsenic human body can be caused seriously poisoning, for arsenic trioxide, its toxicity mainly in cell SH is combined the effect of obstruction enzyme.Generally subacute and slow poisoning is because the damage of nervus vasculairs causes dystrophia, and then causes paralysis symptom, there will be severe carcinogenic effect.In recent years, the development learned a skill impels the emphasis of analytical chemistry transfer to the detection of trace element and measure, it is applied to mensuration and the analysis of the trace element of biological sample (blood, tissue), environment (air, water sample), mineral products, agricultural (soil, crops), botanical herbs etc. widely, the quantitative detection of especially closely bound up with people arsenic and compound thereof.Can find easy, easy, reliable analytical approach, be the necessary condition that modern Analytical Methods of Trace obtains significant development.
Summary of the invention
Limitation according to existing detection method of the present invention, detection and the analytical approach of As polluted soil are provided, it is characterized in that, described method adopts chloroazotic acid-perchloric acid resolution method, take pedotheque 1.0000g, be placed in triangular flask, moistening with a small amount of water, first add 7ml concentrated hydrochloric acid, add 3ml red fuming nitric acid (RFNA) again, shake up, be placed on electric hot plate, at 120-150 DEG C after brown oxides of nitrogen is removed, take off cooling, perchloric acid 5ml is added along wall, continue hot digestion to produce dense white cigarette and to volatilize most of perchloric acid, in triangular flask, sample is canescence, cancel cooling, turn liquid, measure with dnal-channel atomic fluorescence instrument.
The region of described method choice 10 different planting period samples, the pedotheque of layout with transverse and longitudinal vertical-type collection, layering collection 0-30cm and 30-50cm.
The sampling of described pedotheque adopts inquartation process after removing stone, the residual leaf of plant, obtains 2-5kg, air-dry, grinding, excessively 80 mesh sieves.
The present invention is directed to the arsenic pollution detection of environment planting soil and analysis, method is sensitive, easy, data accuracy is high.
Embodiment
Following non-limiting example can make the present invention of those of ordinary skill in the art's comprehend, but does not limit the present invention in any way.
Embodiment 1
The detection of As polluted soil and analytical approach, it is characterized in that, described method adopts chloroazotic acid-perchloric acid resolution method, take pedotheque 1.0000g, be placed in triangular flask, moistening with a small amount of water, first add 7ml concentrated hydrochloric acid, add 3ml red fuming nitric acid (RFNA) again, shake up, be placed on electric hot plate, at 120-150 DEG C after brown oxides of nitrogen is removed, take off cooling, add perchloric acid 5ml along wall, continue hot digestion and produce dense white cigarette and to volatilize most of perchloric acid, in triangular flask, sample is canescence, cancel cooling, turn liquid, measure with dnal-channel atomic fluorescence instrument.The region of described method choice 10 different planting period samples, the pedotheque of layout with transverse and longitudinal vertical-type collection, layering collection 0-30cm and 30-50cm.The sampling of described pedotheque adopts inquartation process after removing stone, the residual leaf of plant, obtains 2-5kg, air-dry, grinding, excessively 80 mesh sieves.
Claims (3)
1. the detection of As polluted soil and analytical approach, it is characterized in that, described method adopts chloroazotic acid-perchloric acid resolution method, take pedotheque 1.0000g, be placed in triangular flask, moistening with a small amount of water, first add 7ml concentrated hydrochloric acid, add 3ml red fuming nitric acid (RFNA) again, shake up, be placed on electric hot plate, at 120-150 DEG C after brown oxides of nitrogen is removed, take off cooling, add perchloric acid 5ml along wall, continue hot digestion and produce dense white cigarette and to volatilize most of perchloric acid, in triangular flask, sample is canescence, cancel cooling, turn liquid, measure with dnal-channel atomic fluorescence instrument.
2. the detection of As polluted soil according to claim 1 and analytical approach, it is characterized in that, the region of described method choice 10 different planting period samples, and to layout collection with transverse and longitudinal vertical-type, layering gathers the pedotheque of 0-30cm and 30-50cm.
3. the detection of As polluted soil according to claim 1 and analytical approach, is characterized in that, the sampling of described pedotheque adopts inquartation process after removing stone, the residual leaf of plant, obtains 2-5kg, air-dry, grinding, crosses 80 mesh sieves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310530542.5A CN104596999A (en) | 2013-10-31 | 2013-10-31 | Method for detecting and analyzing arsenic-polluted soil |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310530542.5A CN104596999A (en) | 2013-10-31 | 2013-10-31 | Method for detecting and analyzing arsenic-polluted soil |
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| CN104596999A true CN104596999A (en) | 2015-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310530542.5A Pending CN104596999A (en) | 2013-10-31 | 2013-10-31 | Method for detecting and analyzing arsenic-polluted soil |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105954250A (en) * | 2016-07-06 | 2016-09-21 | 潘月华 | Novel method for measuring arsenic in urine |
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2013
- 2013-10-31 CN CN201310530542.5A patent/CN104596999A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105954250A (en) * | 2016-07-06 | 2016-09-21 | 潘月华 | Novel method for measuring arsenic in urine |
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Application publication date: 20150506 |