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Detection method of antimony in different valence states in environmental waters

A detection method and technology for water bodies, applied in measurement devices, instruments, scientific instruments, etc., can solve problems such as unfavorable Sb concentration detection, inability to guarantee antimony form, complicated operation steps, etc. good effect

Inactive Publication Date: 2017-07-07
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Antimony has attracted widespread attention from scholars and the public due to its widespread use and toxic effects. Water is an important way for people to absorb and accumulate antimony. Therefore, it is necessary to conduct research on the analysis of the valence state of antimony in environmental water bodies. However, the current detection methods of antimony in environmental water bodies mainly focus on the research of its total amount, and there are few detection methods for different valence states of Sb in water bodies. , and the existing method has complicated operation steps, which is not conducive to the detection of Sb concentration in the laboratory, and cannot guarantee that the form of antimony before detection remains stable

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  • Detection method of antimony in different valence states in environmental waters
  • Detection method of antimony in different valence states in environmental waters
  • Detection method of antimony in different valence states in environmental waters

Examples

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Embodiment 1

[0044] A method for detecting antimony in different valence states in environmental water, comprising the steps of:

[0045] (1) Sample collection and pretreatment: Collect 100 mL of environmental water samples, dilute to 200 mL with 0.2 mol / L ammonium tartrate solution, and filter with a 0.22 μm filter membrane, and the filtrate is to be tested.

[0046] (2) Using high performance liquid chromatography-hydride generation-atomic fluorescence method to establish a standard curve with different gradient concentrations;

[0047] Preparation of standard solution: Weigh a certain amount of potassium hexahydroxyantimonate (KSb(OH) 6 ) and antimony potassium tartrate (C 8 h 4 K 2 o 12 Sb 2 ), prepared as 1000mg / L mother liquor of Sb(V) and Sb(Ⅲ), diluted Sb(V) mother liquor with ultrapure water to make 10mg / L standard solution, diluted Sb(Ⅲ) with 0.2mol / L ammonium tartrate ) mother solution to make a 10mg / L standard solution, and then make a mixed standard solution of Sb(V) and...

Embodiment 2

[0067] Water sample 1 in the environment was collected, added with 0.2 mol / L ammonium tartrate solution, and passed through a 0.22 μm filter membrane (Whatman, UK) for testing.

[0068] Weigh a certain amount of potassium hexahydroxyantimonate (KSb(OH) 6 ) and antimony potassium tartrate (C 8 h 4 K 2 o 12 Sb 2 ), prepared into 1000mg / L mother liquor of Sb(V) and Sb(Ⅲ), then diluted with ultrapure water and 0.2mol ammonium tartrate solution respectively to make 10mg / L mother liquor, and then made into Sb(V) and Sb(Ⅲ) mixed standard solution: 0μg / L, 1μg / L, 2.5μg / L, 5μg / L, 10μg / L, 20μg / L, 40μg / L, 100μg / L. Among them, the Sb(V) and Sb(Ⅲ) chromatograms of 100μg / L mixed standard solution are as follows figure 1 Shown (Sb (V) peak in front).

[0069] The chromatographic column used to separate water is an anion separation column PRP-X100 (250mm×4.1mm, 10μm), and the mobile phase is 0.2mol / L ammonium tartrate solution (adjust the pH value to 5 after passing through a 0.22μm ny...

Embodiment 3

[0082] The water body sample 2 in the collection environment is different from the water body sample 1 in Example 2, and the Sb(V) and Sb(Ⅲ) concentrations in the environmental water body of the present invention are detected by using the detection method of different valence antimony in the environmental water body , the specific detection method is the same as Example 2, and the final detection result is: the concentration of Sb (V) and Sb (III) in the water body sample 2 is 258.38 μ g / L and undetected ( Figure 5 ).

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Abstract

The invention discloses a detection method of antimony in different valence states in environmental waters. The detection method comprises the following steps of (1) collecting samples and pretreating the collected samples: collecting environmental water samples, making the volume constant with an ammonium tartrate solution, performing filtration, and enabling filatrate to be tested; (2) establishing a standard curve at different gradient concentrations by adopting a high performance liquid chromatogram-hydride generation-atomic fluorescence method; (3) determining a labelling recovery rate; and (4) performing collection and pretreatment on samples by using the method in the step (1), and detecting Sb(V) and Sb (III) in the collected environmental water samples by using the method in the step (2). According to the detection method of antimony in different valence states in environmental waters disclosed by the invention, stable valence states of the antimony in the water samples can be maintained, and the detection method has the advantages of being low in detection limit, high in recovery rate and good in repeatability.

Description

technical field [0001] The invention relates to a method for detecting antimony, in particular to a method for detecting antimony in different valence states in environmental water bodies. Background technique [0002] Antimony is a globally distributed metal element. It belongs to the 15th group element of the same family as arsenic in the periodic table of elements. Antimony is a metal element with important strategic significance. It plays an irreplaceable role in modern industry. The main purpose is For use in the production of lead batteries, bromine or chlorine-containing flame retardants, semiconductors, ceramics, bullets, and their organic compounds are also used as pesticides or medicines. After the industrial revolution, the demand for antimony in modern industry has increased sharply, so the antimony pollution in the process of mineral mining, industrial production and use is also showing a more and more serious trend. Antimony has attracted widespread attention ...

Claims

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Application Information

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IPC IPC(8): G01N30/02
CPCG01N30/02G01N2030/027
Inventor 符志友郭文景吴丰昌鄢元波孙福红朱元荣李会仙
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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