CN103543113A - Method for detecting heavy metal in seawater - Google Patents
Method for detecting heavy metal in seawater Download PDFInfo
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- CN103543113A CN103543113A CN201310530448.XA CN201310530448A CN103543113A CN 103543113 A CN103543113 A CN 103543113A CN 201310530448 A CN201310530448 A CN 201310530448A CN 103543113 A CN103543113 A CN 103543113A
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- heavy metal
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Abstract
The invention relates to a method for detecting heavy metal in seawater, belonging to the analytical chemistry field. The method comprises the following steps: firstly, removing solid impurities from a seawater sample; secondly, adsorbing the water sample in the step I on a resin column; and thirdly, desorbing the resin column in the step II and detecting desorption solution by an atomic absorption spectrometry. The method has the beneficial effects that resin adsorption is adopted to not only enrich heavy metal, but also remove impurities influencing the detection of the heavy metal.
Description
Technical field
The present invention relates to a kind of detection method of heavy metal in seawater, belong to analytical chemistry field.
Background technology
Heavy metal pollution is different from the pollution of other organic compounds.Many organic compounds can, by the physics of nature own, chemistry or biological purification, reduce harmfulness or remove.And heavy metal has enriching, be difficult to degrade in environment.At present China is due in the exploitation at heavy metal, smelting, process, causes many heavy metals to cause serious environmental pollution as lead, mercury, cadmium, cobalt etc. enter atmosphere, water, soil.Heavy metal as discharged with waste water even if concentration is little, also can accumulate in algae and bed mud, by fish and shellfish body surface, is adsorbed, and produces food chain concentrated, thus the public hazards of causing.Favourable or harmful kind, the physicochemical property that not only depends on metal of metal in water body, but also depend on the concentration of metal and the valence state of existence and form, even if useful metallic element concentration surpasses a certain numerical value, also have violent toxicity, make animals and plants poisoning, even dead.Metal organic compound (as organic mercury, organic lead, organo-arsenic, organotin etc.) is more much better than than corresponding metal inorganic compound toxicity; The metal of soluble state is larger than the toxicity of particulate form metal again; Sexavalent chrome is larger etc. than trivalent chromium toxicity.
Heavy metal in human body can and protein and various enzyme there is strong interaction, they are lost activity, also may enrichment in some organ of human body, if surpass the tolerant limit of human body, can cause human body acute poisoning, subacute poisoning, slow poisoning etc., people is known from experience and causes very large harm, for example, (cadmium pollution, etc. nuisance disease, is all caused by heavy metal pollution for the minamata disease (mercury pollution) that Japan occurs and Itai-itai diseases.
Summary of the invention
The present invention is by resin adsorption, not only enrichment heavy metal, also removed the impurity that affect heavy metal detection.
The invention provides a kind of detection method of heavy metal in seawater, described method comprises the steps:
1. seawater sample is removed to solid impurity;
2. by step 1. gained water sample be adsorbed on resin column;
3. 2. resin column of desorption procedure, stripping liquid detects by atomic absorption spectrophotometry.
Resin of the present invention is preferably strong basic type anion-exchange resin.
Available technology adopting chelating resin, thiol resin, strong basic type anion-exchange resin has the absorption property stronger to heavy metal compared with the prior art.
Desorption solvent of the present invention is preferably weak acid.
Weak acid of the present invention is preferably acetic acid, citric acid or phosphoric acid.
Heavy metal of the present invention is preferably at least one in lead, chromium, mercury, cadmium, cobalt, copper and zinc.
Beneficial effect of the present invention is:
1. resin adsorption not only enrichment heavy metal also removed and affected the impurity that heavy metal detects;
2. strong basic type anion-exchange resin has the absorption property stronger to heavy metal.
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
A detection method for heavy metal in seawater, described method comprises the steps:
1. seawater sample is filtered;
2. by step 1. gained water sample be adsorbed on strong basic type anion-exchange resin post;
3. use 2. resin column of acetic acid desorption procedure, stripping liquid detects by atomic absorption spectrophotometry, and testing result is in Table 1.
Comparative example 1
Be with embodiment 1 difference:
Be adsorbed on chelating resin post.
Comparative example 2
Be with embodiment 1 difference:
Be adsorbed on thiol resin post.
Table 1 heavy metal testing result
Claims (4)
1. a detection method for heavy metal in seawater, described method comprises the steps:
1. seawater sample is removed to solid impurity;
2. by step 1. gained water sample be adsorbed on resin column;
3. 2. resin column of desorption procedure, stripping liquid detects by atomic absorption spectrophotometry.
2. method according to claim 1, is characterized in that: described resin is strong basic type anion-exchange resin.
3. method according to claim 1, is characterized in that: described desorption solvent is weak acid.
4. method according to claim 1, is characterized in that: described heavy metal is at least one in lead, chromium, mercury, cadmium, cobalt, copper and zinc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310530448.XA CN103543113A (en) | 2013-10-31 | 2013-10-31 | Method for detecting heavy metal in seawater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310530448.XA CN103543113A (en) | 2013-10-31 | 2013-10-31 | Method for detecting heavy metal in seawater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103543113A true CN103543113A (en) | 2014-01-29 |
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| CN201310530448.XA Pending CN103543113A (en) | 2013-10-31 | 2013-10-31 | Method for detecting heavy metal in seawater |
Country Status (1)
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| CN (1) | CN103543113A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106501384A (en) * | 2016-09-19 | 2017-03-15 | 湖北神舟化工有限公司 | A kind of method of ion-exchange chromatography chelating Chroma-Pak middle reaches from chromium content |
| CN106769919A (en) * | 2016-11-25 | 2017-05-31 | 防城港市质量技术监督局 | A kind of assay method of heavy metal in waste water Cr |
| CN107421896A (en) * | 2017-05-03 | 2017-12-01 | 天津出入境检验检疫局动植物与食品检测中心 | The separation and concentration and detection method of micro cadmium ion in seawater |
| CN110596022A (en) * | 2019-08-28 | 2019-12-20 | 广东工业大学 | Atomization device and atomization method |
Citations (3)
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| JP2005043246A (en) * | 2003-07-23 | 2005-02-17 | Mitsui Chemical Analysis & Consulting Service Inc | Method of quantifying heavy metals in fluorocarbon resin |
| CN201697826U (en) * | 2010-05-27 | 2011-01-05 | 上海光谱仪器有限公司 | Heavy metal element orderly flowing injection on-line enrichment device |
| CN102262060A (en) * | 2010-05-27 | 2011-11-30 | 上海光谱仪器有限公司 | Method and device for analyzing heavy metal elements by on-line enrichment and atomic absorption spectrum |
-
2013
- 2013-10-31 CN CN201310530448.XA patent/CN103543113A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005043246A (en) * | 2003-07-23 | 2005-02-17 | Mitsui Chemical Analysis & Consulting Service Inc | Method of quantifying heavy metals in fluorocarbon resin |
| CN201697826U (en) * | 2010-05-27 | 2011-01-05 | 上海光谱仪器有限公司 | Heavy metal element orderly flowing injection on-line enrichment device |
| CN102262060A (en) * | 2010-05-27 | 2011-11-30 | 上海光谱仪器有限公司 | Method and device for analyzing heavy metal elements by on-line enrichment and atomic absorption spectrum |
Non-Patent Citations (1)
| Title |
|---|
| 刘颖 等: "强碱性SO42-型阴离子交换树脂吸附分离-分光光度法测定痕量铅", 《广东微量元素科学》, vol. 4, no. 10, 31 December 1997 (1997-12-31) * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106501384A (en) * | 2016-09-19 | 2017-03-15 | 湖北神舟化工有限公司 | A kind of method of ion-exchange chromatography chelating Chroma-Pak middle reaches from chromium content |
| CN106769919A (en) * | 2016-11-25 | 2017-05-31 | 防城港市质量技术监督局 | A kind of assay method of heavy metal in waste water Cr |
| CN107421896A (en) * | 2017-05-03 | 2017-12-01 | 天津出入境检验检疫局动植物与食品检测中心 | The separation and concentration and detection method of micro cadmium ion in seawater |
| CN110596022A (en) * | 2019-08-28 | 2019-12-20 | 广东工业大学 | Atomization device and atomization method |
| CN110596022B (en) * | 2019-08-28 | 2022-02-22 | 广东工业大学 | Atomization device and atomization method |
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Application publication date: 20140129 |