悬浮液进样石墨炉原子吸收光谱法测定环境样品中痕量铅

刘汉东; 刘国珍; 黄兵; 田勇强; 汤志勇; 金泽祥

Volume 25 Issue 5

Sep. 2000

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Article Navigation > Earth Science > 2000 > 25(5): 532-535

LIU Handong, LIU Guozhen, HUANG Bing, TIAN Yongqiang, TANG Zhiyong, JIN Zexiang, 2000. DETERMINATION OF TRACE LEAD IN ENVIRONMENTAL SAMPLES BY SLURRY SAMPLING WITH GRAPHITE FURNACE ATOMIC ABSORPTION SPECTROMETRY. Earth Science, 25(5): 532-535.

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DETERMINATION OF TRACE LEAD IN ENVIRONMENTAL SAMPLES BY SLURRY SAMPLING WITH GRAPHITE FURNACE ATOMIC ABSORPTION SPECTROMETRY

1.
Department of City Building and Environmental Protection, Jianghan University, Wuhan 430010, China
2.
Faculty of Material Science and Chemical Engineering, China University of Geosciences, Wuhan 430074, China

Received Date: 2000-05-29
Publish Date: 2000-09-25

Abstract

Abstract

A method has been developed for the determination of trace lead in the environmental samples by slurry sampling with graphite furnace atomic absorption spectrometry (GFAAS). The effects of particle size, slurry concentration, modifiers and slurry stability agents on the accurate determination are dealt with in this paper. The research shows that the particle size < 38 μm, the magnetic agitation with 0.2 g/L Triton-100 as stability agent, and the 3 g/L (NH₄)₂HPO₄ as a modifier are of practical use. The detection limit is 0.10ng/g, and the precision (RSD, n=10) is 3.31%. The analytical results of the standard reference samples are consistent with the certified values.
- slurry sampling,
- graphite furnace atomic absorption spectrometry,
- environmental sample,
- lead

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References(5)

References

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