石墨探针直接收集和石墨探针炉原子吸收法测定APM中痕量镉  

DIRECT COLLECTION WITH GRAPHITE PROBE FILTERS AND DETERMINATION OF TRACE CADMIUM IN ATMOSPHERIC PARTICULATE MATTER BY GRAPHITE PROBE FURNACE ATOMIC ABSORPTION SPECTROMETRY

作　　者：葛伊莉[1] 周立群[1] 张必成[1] 蔡火操[1] 

机构地区：[1]湖北大学化学系

出　　处：《光谱学与光谱分析》1998年第4期446-449,共4页Spectroscopy and Spectral Analysis

摘　　要：本文采用多孔石墨探针直接采集大气微粒物质（ＡＰＭ）后，立即用石墨探针炉原子吸收法测定收集在探针上的ＡＰＭ中的镉。实验表明：峰面积吸光度与镉的浓度在０～５０μｇ／Ｌ呈良好的线性关系，镉的特征量和检出限（３σ）分别为２．４８和１．８６ｐｇ，其相对标准偏差为２．０６％（ｎ＝１１），分析标准参比材料，其回收率和相对标准偏差（ｎ＝１１）。分别为９０．１５～９９．２９％和４．０９％。方法准确、灵敏、快速、简便。After atmospheric particulate matter was directly collected with graphite probe filters,the trace cadmium in APM was determined by graphite probe furnace atomic absorption spectrometry.The results showed that the absorbance(peakarea mode)and the concentration of cadmium had a excellent linearity in the range of 0～50μg/L.The characteristic mass and detection limit(3σ)were 248 and 186 pg,respectively.Its relative standard deviation was 206%(n=11).The results of analysis of the National Bureau of standards of America,Standard Reference Material(SRM)No1648,Urban Particulate Matter,gave a recovery of 9015～9929% with RSD of 409%.The method proved to be accurate,sensitive,rapid and simple.

关 键 词：石墨探针 原子吸收法 APM 镉 测定 大气微粒物质 

分 类 号：X513.02[环境科学与工程—环境工程]