Determination of Active Species of Heavy Metals in Sewage Sludge by ICP-MS
TIAN Dong-mei1, DENG Gui-chun2, ZANG Shu-liang2, SONG Xue-jun1, WU Shi-wei1
1. Institute of Chemistry and Life Sciences, Shenyang Normal University, Shenyang 110034, China 2. Institute of Chemical Science and Engineering, Liaoning University, Shenyang 110036, China
Abstract：Sewage sludge samples for the research from the sewage disposal plants of the north, Mantang River and Xiannu River in Shenyang were extracted and separated by H2O, HAc and organic solvents of different polarities. The active species of Cd, Pb, Cu, Zn and Cr existing in the sewage sludge were determined by ICP-MS, and the regularity and influential factors were studied under the alternation of environmental conditions. The results showed that the content of acid-soluble heavy metals was more than that of water-soluble ones, and both had coincident regularity under the alternation of time and temperature; the content of the organic solvents was positively correlated to the solvent polarity. The acid-soluble heavy metals were more active during the course of transforming, and the activity sequence of heavy metals in the same species was: water-soluble Zn＞Cu＞Cd＞Pb＞Cr, acid-soluble Cd＞Cr＞Cu＞Zn＞Pb, and organic-soluble Pb＞Cd＞Cr＞Cu＞Zn.
Key words：ICP-MS;Sewage sludge;Heavy metals;Active species
田冬梅1,邓桂春2,臧树良2,宋学君1,武士威1 . 电感耦合等离子体质谱法测定城市污泥中重金属的活性形态[J]. 光谱学与光谱分析, 2006, 26(12): 2330-2333.
TIAN Dong-mei1, DENG Gui-chun2, ZANG Shu-liang2, SONG Xue-jun1, WU Shi-wei1 . Determination of Active Species of Heavy Metals in Sewage Sludge by ICP-MS. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(12): 2330-2333.
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