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Citation: Wang Bingwu, Chen Yao, Niu Jianjun. CONTINUOUS DETERMINATION OF ARSENIC AND TIN BY HYDRIDE GENERATION-SPECTROPHOTOMETRY TECHNIQUE[J]. Chinese Journal of Applied Chemistry, ;1993, 10(1): 80-82. shu

CONTINUOUS DETERMINATION OF ARSENIC AND TIN BY HYDRIDE GENERATION-SPECTROPHOTOMETRY TECHNIQUE

1.
Changchun Institute of Applied Chemistry, Academia Sinica, 130022 Changchun

Received Date: 20 November 1991
Available Online: 14 March 1992

For continuous determination of arsenic and tin a new method consisted of the hydride generation-silver sol spectrophotometry has been proposed. The separation of As and Sn was achieved in the form of AsH₃ and SnH₄ in 3.0 mol/L HCI and in a medium of pH 5.5, respectively from the same solution. With a hydride separator which eliminates the interference of other covalent hydrides, the method is characterized by high sensitivity, selectivity and applicability. Satisfactory results were obtained in analysing pure lead,ferrotungsten alloy,ore, and sediments.
- arsenic,
- tin,
- hydride generation,
- spectrophotometry
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