石墨炉原子吸收法测定环境空气中的铅、镉  

Determination on Elements of Pb and Cd in Atmosphere by GFAAS

作　　者：王晓利[1] 陈巍[1] 原霞[1] 顾秀杰[1] 

机构地区：[1]中国船舶重工集团公司第七一八研究所,河北邯郸056027

出　　处：《舰船防化》2012年第4期35-39,共5页

摘　　要：采用硝酸浸泡法消解采样滤膜,用钯作为基体改进剂,以石墨炉原子吸收法测定环境空气样品中的铅、镉。在优化灰化温度和原子化温度的条件下,当采样体积为60m3时,方法的检出限为铅0.65×10-6mg/m3、镉0.07×10-6mg/m3,样品回收率为铅在97.1%～105.3%、镉在96.6%～101.5%之间。The paper determines elements of Pb and Cd in atmosphere samples by using graphite furnace atomic absorption spectrometry （GFAAS） method, with HNO3 digestion as a preprocessing, the matrix modifier consisted of Pd. Under the optimal condition of ash temperature and atomization temperature, the sample volume of 60m3, the detection limit is Pb 0.65 × 10^6mg/m3 and Cd 0.07 × 10^6mg/m3, the recovery rate is between 97.1% -105.3% for Pb and 96.6% -101.5% for Cd.

关 键 词：环境空气 铅 镉 石墨炉原子吸收法 

分 类 号：O657.31[理学—分析化学]