Determination of Trace Silver in Bitterns by FAAS with Sulfhydryl Cotton Preconcentration
Wen He
Abstract
Wen He
Abstract
The silver in brine were enrichmented by sulfhydryl cotton,the siver were oxidized by aqua regia after the sulfhydryl cotton were ashinged,and control 30% hydrochloric acid.The flame atomic absorption spectrometric method were used for the determination of the trace siver.The velocity,enrichment time,andacidity and other impact factors were tested in this paper.The detection limit was 0.002mg/L(3S/N),the recovery rate was found in the range of 99.0%—101% and the relative standard deviation was 3.21%.
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The silver in brine were enrichmented by sulfhydryl cotton,the siver were oxidized by aqua regia after the sulfhydryl cotton were ashinged,and control 30% hydrochloric acid.The flame atomic absorption spectrometric method were used for the determination of the trace siver.The velocity,enrichment time,andacidity and other impact factors were tested in this paper.The detection limit was 0.002mg/L(3S/N),the recovery rate was found in the range of 99.0%—101% and the relative standard deviation was 3.21%.
Key concepts: Aqua regia, Detection limit, Hydrochloric acid, Chemistry, Relative standard deviation, Recovery rate, Atomic absorption spectroscopy, Trace Amounts