摘要
建立了一个氢化物发生-分光光度法同时测定砷、锑、铋的新方法。在酒石酸介质中用KBH_4将 Bi(Ⅲ)、Sb(Ⅲ)、As(Ⅲ)转变成 BiH_3、SbH_3、AsH_3、再分别被乙醇、四氢呋喃、DMF混合溶液(吸收后再加入 HClO_4-DBC-CPA 溶液显色),铁-邻菲罗啉乙醇溶液和 AgNO_3、PVA、乙醇溶液分别吸收。有色溶液在640nm、510nm 和400nm 处有最大吸收。本法简便怏速,灵敏度高。检出限分别是 As 0.04μg/ml、Sb 0.09μg/ml、Bi 0.05μg/ml。用本法对铜、铜合金及沉积物中砷、锑,铋进行测定,结果令人满意。
In the tartaric acid solution,As(Ⅲ),Sb(Ⅲ)and Bi(Ⅲ)react with KBH_4 to form AsH_3 SbH_3 and Bill_3,respectively.AsH_3 SbH_3 and Bill_3 are absorbed by a mixed solution of AgNO_3-polyvinyl alcohol-alcohol,an alcohol solution of Fe(Ⅲ)-1,10- phenanthroline and a mixed solution of aleohol-tetrahydrofuran-DMF,respectively.The colour reaction in the solution absorbed is carried out in the presence of HCIO_4-DBC-CPA. The absornance maximum of As,Sb and Bi was at 400,510 and 640nm,respectively. Tolerance level of interference ions was given.The detection limit was 0.04μg As/ml, 0.09μg Sb/ml and 0.05μg Bi/ml.The method is rapid,simple,sensitive and reproducible and has been applied to the determination of As,Sb and Bi in copper,copper alloy and sediment with satisfactory results.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1991年第10期1128-1132,共5页
Chinese Journal of Analytical Chemistry
基金
国家自然科学基金资助项目
关键词
砷
锑
铋
测定
分光光度法
Arsenic
Antimony
Bismuth
Simultaneous determination
Spectrophotometry
