超声浸取预处理-流动注射火焰原子吸收法测定大气颗粒物中Pb和Cd  

Determination of Pb and Cd in Atomospheric Particulates by Flame Atomic Absorption Spectrometry Coupled with On-Line Flow Injection Pretreatment with Ultrasonic Leaching

作　　者：高焰[1] 王东海[1] 林玉斌[1] 李建议[1] 孔庆珍[1] 

机构地区：[1]济南市环保科研所,山东济南250014

出　　处：《光谱学与光谱分析》2003年第2期383-385,共3页Spectroscopy and Spectral Analysis

基　　金：济南市建委和济南市环保局科研基金(199427)

摘　　要：本文提出超声波震荡前处理方法提取大气滤膜样品中待测金属。通过对样品浸取液种类、酸度和干扰方面的研究,确定了颗粒物样品溶液制备的最佳分析条件,结合流动注射在线富集——原子吸收技术,建立了环境中气体样品测定Pd,Cd方法。方法快速、准确,标准样品测定回收率在97％以上,六次测定相对标准偏差小于2.6％。In this paper, the method for extracting the metals from the filter membrane of the atomospheric particulates with ultrasonic leaching was reported. The dissolution conditions of kinds and acidity as well as the interference conditions were studied. The method of determination Ph and Cd of the atomospheric particulates by flame atomic absorption spectrometry coupled with on-line flow injection preconcentration was proved to be rapid and accuracy. The recoveries are more than 97 %. The relative standard deviation of six samples are less than 2.6 %.

关 键 词：超声浸取 预处理 流动注射火焰原子吸收法 测定 PB CD 镉 铅 大气颗粒物 大气监测 

分 类 号：X831.02[环境科学与工程—环境工程]