摘要
运用流动注射分光光度法，系统研究了在酸性介质中砷（V）与钼酸铵生成的砷（V）钼杂多酸与丁基罗丹明B显色反应体系。并讨论了吸收曲线、酸度、显色剂与表面活性剂PVA的用量、泵转速、进样时间、共存组分及干扰元素对测定结果的影响。结果表明：As（V）在0—0．16mg／L范围内与吸光度有良好的线性关系，线性回归方程为A=0．0706＋1．4413c，线性相关系数为0．9943，相对标准偏差为0．36％，检测限为0．0075mg／L，对废水中的As（V）进行测定，加标回收率在96．84％～107．46％之间。
It is found that in acid medium arsenic（V） could react with ammonium molybdate to form heteromolybdoarsenic acid. In this paper, the developing system between hteromolybdoarsenic acid and butyl rhodamine B was systematically investigated by flow injection spectrophotometry. The effect of some conditions, such as the absorption curve, acidity, chromogenic reagent , rotate speed, sampling time, coexisting ions and polyvinyl alcohol （PVA） were studied. The results showed that under the optimum conditions the linear range of As was 0. 0-0. 16 mg/L, the linear regression equation was A = 0. 0706 ＋ 1.4413c （ R = 0. 9943 ）, the detection limit was 0. 0075 mg/L, the relative standard deviation （BSD） was 0. 36% and the recovery of the method was founded to be 96. 84%-107. 46% when determined arsenic in the waste water.
出处
《皮革科学与工程》
CAS
北大核心
2009年第3期67-70,共4页
Leather Science and Engineering
基金
湖南省教育厅科研基金资助项目(07C048)
关键词
砷
流动注射分光光度法
砷钼杂多酸
丁基罗丹明B
arsenic
flow injection spectrophotometry
heteromolybdoarsenic acid
butyl rhodamine B
