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[用微孔滤膜采样，以铝为基体改进剂，石墨炉原子吸收分光光度计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].

作者信息

Wang Z, Zhu W, Lu Y

机构信息

Hangzhou Environmental Monitoring Center, 310007 Hangzhou.

出版信息

Guang Pu Xue Yu Guang Pu Fen Xi. 2001 Aug;21(4):545-7.

PMID:12945289
Abstract

Beryllium in the atmospheric particulates is collected with 0.22 micron pore diameter micropore filter membrane, which is determined by graphite furnace atomic absorption spectrophotometer using aluminium as a matrix modifier agent. This sampling method shown 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 degrees C. The detection limit of 13.5 ng was obtained.

摘要

大气颗粒物中的铍用孔径为0.22微米的微孔滤膜收集，采用石墨炉原子吸收分光光度计，以铝作为基体改进剂进行测定。这种采样方法具有以下优点：消解简便、完全、快速；膜空白低；洗脱回收率、标准加入回收率、精密度和准确度高。向铍溶液中加入800mg.L-1的铝可使灰化温度达到2000℃。检测限为13.5ng。

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