石墨炉原子吸收法测定空气中铍及其化合物的含量  

A method for dertermination of beryllium and compounds content in air GFAAS

作　　者：王应欣[1] 聂莉[1] 邓虹[1] 

机构地区：[1]辽宁省疾病预防控制中心,沈阳110005

出　　处：《中国卫生检验杂志》2010年第6期1354-1355,共2页Chinese Journal of Health Laboratory Technology

摘　　要：目的:建立空气中铍及其化合物的石墨炉原子吸收光谱测定方法。方法:用滤料(微孔滤膜)采集空气样品,经高氯酸-硝酸或硝酸消化后,用石墨炉原子吸收直接测定。结果:方法的检出限为0.04μg/L,最低检出浓度为1.33×10-5mg/m3,精密度为3.04%～9.29%,加标回收率经高氯酸-硝酸消化后为100%,硝酸消化法为94.2%,采样效率可达99.3%[1],曲线的线性范围在0μg/L～3.0μg/L之间。结论:该方法适用于工作场所现场监测。Objective：To establish a method for dertermination of beryllium and compounds content in the air.Methods：Collect air samples by filter material（microporous filtering film）.After they were digested by perchloric acid-nitric acid or by nitric acrid,dertermine their beryllium and compounds content by GFAAS directly.Results：The detection limit of the method was 0.04 μg/L.The minimum detectable concentration was 1.33×10^-5 mg/m^3.The degree of precision was 3.04%～9.29%.The recovery rates were 100% by perchloric acid-nitric acid and 94.2% by nitric acid.The sampling efficiency was 99.3%[1].The linear range of standard curve was 0 μg/L～3.0 μg/L.Conclusioon：This method is suitable for field monitoring in a workplace.

关 键 词：空气 铍 石墨炉原子吸收法 

分 类 号：O657.31[理学—分析化学]