Method for measuring trivalent antimony and pentavalent antimony by magnetic solid-phase extraction-ICP-MS (Inductively Coupled Plasma Mass Spectrometry) method

A-ICP-MS, pentavalent antimony technology, applied in the field of magnetic solid phase extraction-ICP-MS measurement of trivalent antimony and pentavalent antimony, which can solve the problems of unsatisfactory use requirements, expensive equipment, and a lot of time
CN112697868AInactive Publication Date: 2021-04-23江苏荣坔环保科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
江苏荣坔环保科技有限公司
Publication Date
2021-04-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for measuring trivalent antimony and pentavalent antimony by a magnetic solid-phase extraction-ICP-MS (Inductively Coupled Plasma Mass Spectrometry) method, which comprises the following steps: raw material preparation: obtaining an aqueous solution and raw materials, and synthesizing magnetic graphene oxide particles by a coprecipitation method; and adsorbing trivalent antimony: adjusting the pH value of the aqueous solution, and selectively adsorbing trivalent antimony by the magnetic graphene oxide. According to the method for measuring trivalent antimony and pentavalent antimony through the magnetic solid-phase extraction ICPMS method, magnetic particles and graphene oxide are compounded, magnetic graphene oxide is synthesized through a coprecipitation method, the solid-liquid separation capacity of the magnetic graphene oxide is improved, and the selective adsorption capacity of the magnetic graphene oxide to trivalent antimony is improved on the basis of the specific PH value; the concentrations of trivalent antimony and total antimony in the environmental water sample are detected by inductively coupled plasma mass spectrometry, the pentavalent concentration of the environmental water sample is calculated by using a subtraction method; and the method is quick, convenient, simple and feasible, and is suitable for quantitative determination of trivalent antimony and pentavalent antimony in the environmental water body.
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Description

technical field

[0001] The invention relates to the field of antimony recovery, in particular to a magnetic solid phase extraction-ICP-MS method for measuring trivalent antimony and pentavalent antimony. Background technique

[0002] With the development of science, the risk of releasing the toxic metal antimony into the environment has attracted increasing global attention. Although the background concentrations of Sb in natural water bodies and soils are low, it is worth noting that human anthropogenic activities play an important role in increasing Sb concentrations in the environment. High levels of antimony have been reported to be found in both biological and geological environmental media. Concentrations of antimony can reach hundreds of μg / L in polluted rivers from mining, smelting, burning of fossil fuels and use of antimony products. The organic form of antimony is less toxic than the inorganic form. The inorganic form of antimony predominates in natural waters....

Claims

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