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Method for simultaneously and rapidly determining arsenic and antimony in sodium stannate by vapor generation-atomic fluorescence spectrometry

A technique of atomic fluorescence spectroscopy and vapor generation, applied in fluorescence/phosphorescence, measurement devices, material excitation analysis, etc., can solve the problems that ICP-AES instruments are expensive and cannot meet the requirements of measurement, and achieve green detection, fast analysis, The effect of expanding the application field

Inactive Publication Date: 2020-06-30
北矿检测技术股份有限公司 +1
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Problems solved by technology

Although this method has the characteristics of fast determination, this method can only meet the determination of arsenic and antimony in industrial grade sodium stannate (technical indicators: arsenic (As) ≤ 0.001%, antimony (Sb) ≤ 0.005%, ), and cannot Meet the determination of lower content of arsenic and antimony in reagent grade sodium stannate, and the ICP-AES instrument is expensive

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  • Method for simultaneously and rapidly determining arsenic and antimony in sodium stannate by vapor generation-atomic fluorescence spectrometry

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Embodiment Construction

[0017] The technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, there are many other embodiments obtained by persons of ordinary skill in the art without making creative efforts, all of which belong to the protection scope of the present invention.

[0018] The invention provides a kind of vapor generation-atomic fluorescence spectrometry method for quickly measuring arsenic and antimony in sodium stannate simultaneously, comprising the following steps:

[0019] 1) Reagent preparation: 200 g / L citric acid solution, 50 g / L thiourea-50 g / L ascorbic acid mixed solution, 20 g / L potassium borohydride-5 g / L potassium hydroxide reducing solution, 20% (V / v) hydrochloric acid carrier solution;

[0020] 2) Accurately weigh 4 samples of 0.5000 ...

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Abstract

The invention relates to a method for simultaneously and rapidly determining arsenic and antimony in sodium stannate by a vapor generation-atomic fluorescence spectrometry (VG-AFS). According to the method, a certain amount of citric acid and hydrochloric acid are used for dissolving sodium stannate, a standard addition method is adopted for determination, under the optimal concentration of citricacid and hydrochloric acid, matrix tin is not hydrolyzed, determination of arsenic and antimony by VG-AFS cannot be interfered, and simultaneous and rapid determination of arsenic and antimony in sodium stannate can be achieved. The method is high in sensitivity and accuracy, good in selectivity and low in detection limit, and the lower detection limit of arsenic and antimony is smaller than or equal to 0.00005%; and the method has the advantages of short analysis time, low cost, no matrix interference, safety, environmental protection and high efficiency, and can well satisfy the requirements of simultaneous rapid analysis of impurity elements arsenic and antimony in sodium stannate.

Description

technical field [0001] The invention relates to the field of elemental analysis, in particular to a method for simultaneously and rapidly determining arsenic and antimony in sodium stannate by vapor generation-atomic fluorescence spectrometry (VG-AFS). Background technique [0002] Sodium stannate is an important chemical raw material and chemical reagent. It is mainly used in alkaline tin plating and copper plating in the electroplating industry, as well as electroplating and electroless plating of tin alloys, zinc-tin alloys, aluminum alloys and other alloys. It is used in the textile printing and dyeing industry, It is also widely used in industries such as glass, ceramics and coinage. Among them, the content of impurity elements such as arsenic and antimony has a significant negative impact on the use of sodium stannate in electroplating and other processes. The content is clearly defined. Therefore, in the production and use of sodium stannate, it is necessary to dete...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/64
CPCG01N21/6404
Inventor 冯先进杨斐刘海涛史烨弘柴刚李瑞华李华昌
Owner 北矿检测技术股份有限公司
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