砷、硒、镉、镍的蒸气发生反应历程与原子荧光增感效应机理

doi:10.3969/j.issn.1000-1565.2009.01.011

摘要/Abstract

摘要： 实验考察和理论分析了介质酸度对砷、硒、镉和镍的化学蒸气发生反应的影响.实验结果表明,在酸性较强的盐酸介质中砷、硒的蒸气发生具有较高的效率,其最佳酸性范围较宽;在弱酸性盐酸介质中,镉和镍的蒸气发生具有较高的效率,其最佳酸度范围较窄.基于过渡中间态理论,探讨了蒸气发生反应历程.考察和比较了络合剂、金属离子、表面活性剂的增感效应,提出了8-羟基喹啉、邻菲罗啉、钴离子、阳离子表面活性剂CTAB和非离子表面活性剂Triton X-100对原子荧光的增感效应机理.

关键词: 蒸气发生, 反应历程, 原子荧光, 增感效应机理, 砷, 硒, 镉, 镍

中图分类号:

O657.3

孙汉文,苗媛媛. 砷、硒、镉、镍的蒸气发生反应历程与原子荧光增感效应机理[J]. 河北大学学报(自然科学版), 2009, 29(1): 36-44.

SUN Han-wen,MIAO Yuan-yuan. Reaction Course of Vapor Generation and Mechanism of Increasing Effect on Atomic Fluorescence of Arsenic, Selenium, Cadmium and Nickel[J]. Journal of Hebei University (Natural Science Edition), 2009, 29(1): 36-44.

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