摘要
在盐酸介质中发生砷化氢,发生效率达98％.利用丁铎尔效应实验证实砷化氢与硝酸银的黄色反应产物是胶态银.讨论了聚乙烯醇对胶态银的保护作用,扩大了工作曲线适用范围.采用高压罐溶样,改善了工作条件.分析沉积物标准样品及水样中微量砷,取得了满意的结果.
The arsenic hydride generation was accomplished in hydrogen chloride solution, and its yield is 98%.By Tyndall effect,it has been confirmed that the yellow product formed by the reaction between arsine and silver nitrate is colloidal silver.The action of polyvinylol protectant for colloidal silver was disscussed,which expands the operational scope of specification curve.Operational conditions is improved with autoclave being used for solubilizing the samples.Determination of arsenic in deposit standard samples and wat- er samples has brought out satisfatory results.
出处
《辽宁石油化工大学学报》
CAS
1993年第2期14-18,共5页
Journal of Liaoning Petrochemical University
关键词
砷
氢化物发生
分先光度法
Arsenic
Hydride generate
Spectrophotometry
