Triple-phase single-drop microextraction of silver and its determination using graphite-furnace atomic-absorption spectrometry
Triple-phase single-drop microextraction of silver and its determination using graphite-furnace atomic-absorption spectrometry
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DOI：
10.2116/analsci.24.799
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发表时间：
2008-06-01
影响因子：
1.6
通讯作者：
Akhondzadeh, Jeyran
中科院分区：
文献类型：
--
作者：
Chamsaz, Mahmoud;Arbab-Zavar, Mohammad Hossein;Akhondzadeh, Jeyran
研究了二乙基二硫代氨基甲酸酯(DDTC)-硫代氨基酚三相微萃取测定银的新方法。银从样品溶液的基质中分离和预富集，最后用电热原子吸收光谱分析测定。对影响效率的因素进行了考察。在优化的条件下，可获得30倍的预富集倍数，检出限为0.05mgL-1。相对标准偏差为10%(5次测定)。方法用于水样中痕量银的测定。
A new method is described for the determination of silver based on triple-phase microextraction using diethyldithiocarbamate (DDTC) and thioaminophenol. Ag is separated and preconcentrated from the matrix of the sample solution, and finally determined by electrothermal atomic-absorption spectroscopy. The parameters that affect the efficiency were investigated. Under the optimized conditions, a 30-fold preconcentration factor with a detection limit of 0.05 mu g L-1 was achieved. The relative standard deviation was 10% (5 determinations). The developed method was applied to the determination of trace Ag in water samples.