摘要
通过选择最优消解体系,尽可能提取总悬浮颗粒物TSP滤膜上所含的重金属元素,并选定适宜的基体改进剂、仪器工作条件等,研究了用原子荧光光谱法测定TSP中重金属镉的方法。实验表明,高浓度的硼氢化钾溶液和加入一定量的焦磷酸钠能有效地排除铜、铅带来的干扰,在载流中加入含Co2+的溶液,对镉的荧光强度有较好的增感效应,能有效提高镉的测定灵敏度和重复性。本法简单、灵敏、准确,精密度和准确度均在可靠范围内。
Abstract： In this article, we select optimal dissolution system, extract the heavy metals on the total suspended particles membrane as possible, and select appropriate matrix modifier, equipment working conditions etc. , build the Atomic Fluorescence Spectrometry method to determine heavy metal cadmium in the TSP. The experiment indicate that high concentration KBH4 solution, and joins a certain amount of Na4P2O7 to get rid of Cu, Pb＇s effect, in the cartier to join in with Co^2＋ , Ni^2＋ solution, the fluorescence intensity of cadmium have By a sense of good effect, can effectively increase the sensitivity of the determination of cadmium and repeatability. This method is simple, sensitive, accurate, precision and accuracy are reliable in the range.
出处
《环境科学与管理》
CAS
2009年第4期118-120,共3页
Environmental Science and Management
关键词
原子荧光法
总悬浮颗粒物
镉
atomic fluorescence spectrometry
TSP
cadmium
