Abstract：A method of microwave digestion technique-flame atomic absorption spectrometry was proposed to determine the total contents of Cu, Zn, Pb, Cd, Cr and Ni in five different kinds of waste bag filters from a steel plant. The digestion effects of the six acid systems on the heavy metals digestion were studied for the first time. The relative standard deviation (RSD) of the method was between 1.02% and 9.35%, and the recovery rates obtained by standard addition method ranged from 87.7% to 105.6%. The results indicated that the proposed method exhibited the advantages of simplicity, speediness, accuracy and repeatability, and it was suitable for determining the metal elements of the waste bag filter. The results also showed that different digestion systems should be used according to different waste bag filters. The waste bag filter samples from different production processes had different metal elements content. The Pb and Zn were the highest in the waste bag filters, while the Cu, Ni, Cd and Cr were relatively lower. These determination results provided the scientific data for further treatment and disposal of the waste bag filter.
Key words：Microwave digestion;Flame atomic absorption spectrometry (FAAS);Waste bag filter;Heavy metals
宁寻安，周 云，刘敬勇，王江辉，李 磊，马晓国. 微波消解-火焰原子吸收光谱法测定钢铁厂废旧除尘布袋中重金属[J]. 光谱学与光谱分析, 2011, 31(09): 2565-2568.
NING Xun-an, ZHOU Yun, LIU Jing-yong, WANG Jiang-hui, LI Lei, MA Xiao-guo . Determination of Metals in Waste Bag Filter of Steel Works by Microwave Digestion-Flame Atomic Absorption Spectrometry . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2011, 31(09): 2565-2568.
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