Acid Volatile Sulfides and Simultaneously Extracted Metals in Sediments from Hongfeng Lake

摘要：

In order to study the distribution characteristics and potential toxicity of heavy metals in sediment samples, acid volatile sulfides (AVS) and simultaneously extracted metals (SEM including Cu, Ni, Zn, Cd and Pb) were determined. The mean concentrations of heavy metals in the form of SEM were in the order of Zn > Cu > Ni > Cd > Pb, while the AVS and SEM concentrations and the SEM/AVS molar ratios were calculated as follows: the AVS concentrations in sediments ranged from 6.356 to 16.866 μmol·g-1 (dry weight) with the mean value of 12.410 μmol-g-1 and variation coefficient of 28.19％. The SEM concentrations were between 0.504 and 1.222 μmol·g-1 (dry weight) with the mean value of 0.833 μmol·g-1 and the variation coefficient of 31.90％. The SEM/AVS molar ratios were from 0.030 to 0.162 with the mean value of 0.074 μmol·g-1 and the variation coefficient of 52.68％. The SEM/AVS molar ratios were much smaller than 1.0, apparently indicating that the heavy metals under investigation did not pose a toxicity overall in all sediments.

关键词： acid volatile sulfides simultaneously extracted metals sediment Hongfeng lake

作者: Xiaofei JIN Jiping ZHANG Jiwei HU Jin LUO Liya FU Suming DUAN Zhibing ZHAO

作者单位: Guizhou Provincial Key Laboratory for Information System of Mountainous Areas and Protection of Ecological Environment,Guizhou Normal University, Guiyang, China

会议类型: 国际会议

会议名称: The Sixth International Conference on Waste Management and Technology(第六届固体废物管理与技术国际会议 ICWMT 6)

会议地点: 苏州

会议语种:英文

页码: 7-11

在线出版日期: 2011-08-30（万方平台首次上网日期，不代表论文的发表时间）