铝作基体改进剂微孔滤膜采样石墨炉原子吸收法测定大气颗粒物中的铍  

Determination of Beryllium in Atmospheric Particulate by Graphite Furnace Atomic Absorption Spectrophotometer Using Aluminium as a Matrix Modifier Agent Sampling with Micropore Filter Membrane

作　　者：王志伟[1] 朱文[1] 陆莹[1] 

机构地区：[1]杭州市环境监测中心站,杭州310007

出　　处：《光谱学与光谱分析》2001年第4期545-547,共3页Spectroscopy and Spectral Analysis

摘　　要：本文用 0 2 2 μm孔径的微孔滤膜采集大气颗粒物中的铍 ,以铝作基体改进剂 ,并用石墨炉原子吸收分光光度法进行测定 ,该方法具有消解方便、快速、完全 ,滤膜空白值低。用 80 0mg·L-1的铝加入铍试液后 ,使灰化温度达到 2 0 0 0℃ ,样品加标回收率 ,精密度 ,解吸率均较高。Beryllium in the atmospheric particulates is collected with 0.22 mum pore diameter micropore filter membrane, which is determined by graphite furnace atomic absorption spectrophotometer using aluminium as a matrix modifier agent. This sampling method showns several advantages: easy, complete and fast digestion; low membrane blank; high elution recovery, standard addition recovery, precision and accuracy. The addition of 800 mg(.)L(-1) aluminium to beryllium solution allows ashing temperature of 2 000 degreesC. The detection limit of 13.5 ng was obtained.

关 键 词：铍 GFAAS 微孔滤膜 基体改进剂 铝 原子吸收法 大气颗粒物 大气污染 

分 类 号：X132[环境科学与工程—环境科学] X513