关键词: 电感耦合等离子体光谱法；火焰原子吸收法；冷原子吸收测汞法；铅和汞含量测试

Abstract: Heavy metal content is an important environmental attribute in brake linings. In order to quickly and accurately test the content of heavy metals, measurement lead (Pb) and mercury (Hg) content in brake linings by inductively coupled plasma spectrometer method ( ICP-AES ) were respectively compared with flame atomic absorption spectrometry method ( FAAS ) for Pb and cold atomic absorption mercury spectrometer method (CAAMS) for Hg. The results show that ICP-AES for Pb and Hg measurement have similar accuracy and precision compared to FAAS and CAAMS determination for Pb and Hg. In terms of detection limit, FAAS for Pb and CAAMS for Hg measurements have advantage over ICP-AES measurement for Pb and Hg. Both Pb and Hg can be determined simultaneously and accurately by ICP-AES, which provides a reference for the scientific research and testing of the determination of heavy metal content in brake linings in the laboratory

Key words: ICP-AES; FAAS; CAAMS; Lead and mercury content test