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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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 e

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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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Example Embodiment

[0043] Example 1

[0044] A method for detecting antimony in different valence states in environmental water bodies, including the following steps:

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

[0046] (2) Establish standard curves of different gradient concentrations by high performance liquid chromatography-hydride generation-atomic fluorescence method;

[0047] Preparation of standard solution: Weigh a certain amount of potassium hexahydroxyantimonate (KSb(OH) 6 ) And potassium antimony tartrate (C 8 H 4 K 2 O 12 Sb 2 ), make 1000mg / L mother liquor of Sb(V) and Sb(Ⅲ), dilute the mother liquor of Sb(V) with ultrapure water to make 10mg / L standard solution, dilute Sb(Ⅲ) with 0.2mol / L ammonium tartrate The mother liquor of) is made into a standard solution of 10mg / L, and then a mixed standard solution of Sb(...

Example Embodiment

[0066] Example 2

[0067] Collect water sample 1 in the environment, add 0.2mol / L ammonium tartrate solution, and pass through a 0.22μm filter membrane (Whatman, UK) to be tested.

[0068] Weigh a certain amount of potassium hexahydroxyantimonate (KSb(OH) 6 ) And potassium antimony tartrate (C 8 H 4 K 2 O 12 Sb 2 ), prepare 1000mg / L mother liquor of Sb(V) and Sb(Ⅲ), then dilute with ultrapure water and 0.2mol ammonium tartrate solution to make 10mg / L mother liquor, and then make 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 the 100μg / L mixed standard solution are as follows figure 1 Shown (Sb(V) peaks first).

[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 (after passing through a 0.22μm nylon filter membrane, adjust the pH to 5), The flow rate is...

Example Embodiment

[0081] Example 3

[0082] The water sample 2 in the environment was collected. The collection location was different from that of the water sample 1 in Example 2. The Sb(V) and Sb(Ⅲ) concentrations were detected using the method for detecting antimony in different valence states in the environmental water of the present invention The specific detection method is the same as in Example 2. The final detection result is: the concentration of Sb(V) and Sb(Ⅲ) in water sample 2 is 258.38μg / L and not detected ( 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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