Selective and sensitive determination of As(III) and tAs in Chinese herbal medicine samples using _L-cysteine modified carbon paste electrode-based electrolytic hydride generation and AFS analysis

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• 作者：Xiao-Ping Lu ^{1589572323@qq.com} ; Xin-An Yang ; ^{13087641@qq.com} ; Lin Liu ^{1114805728@qq.com} ; Hui-Hui Hu ; Wang-Bing Zhang ; ^{ahutwbzh@163.com}
• 关键词：Electrolytic hydride generation ; Carbon paste electrode ; Arsenic ; Atomic fluorescence spectrometry ; Chinese herbal medicine
• 刊名：Talanta
• 出版年：2017
• 出版时间：1 April 2017
• 年：2017
• 卷：165
• 期：Complete
• 页码：258-266
• 全文大小：1225 K
• 卷排序：165

文摘

We develop a novel modified electrode-based EHG-AFS for the selective determination of higher toxicity of As(III). The response of As(III) from CMCPE could be increased at least two-fold compared to conventional graphite or lead electrode. The electron transfer pathway or rate has changed due to the formation of As-S bond.