Improvement of Sample Pre-Treatment Technology for Determining Copper in Coal Gangue by Flame Atomic Absorption Spectrometry

Determination of copper in coal gangue was analyzed by flame atomic absorption spectrometry. The method of sample pretreatment was reserched, digestion conditions and instrument conditions were optimized, the corresponding determination of atomic absorption spectrometry was established. RSD of the method was between 1% to 3%,the recovery was 96.5%~104%.