Vertical Profiles of Acid-volatile Sulfide and Toxicity of Heavy Metals in a Municipal Polluted River in PRD, China
AVS (Acid-volatile sulfide) and SEM (Simultaneously Extracted Metals) profiles are presented for a 100cm-sediment core taken in Foshan Waterway, a typical municipal polluted river in PRD, China. The purpose of this study was to reveal the vertical distribution of AVS and toxicity of heavy metals in deep sediment in the heavily polluted area.Results of ∑SEM5-AVS obtained in the current work indicated that sediment in the most surface layer (0~4cm)possessed potential biotoxicity, sediment in the sub-surface layer (4~10cm)had no potential biotoxicity, and the sediment biotoxicity fluctuated in deeper layers, and sediment below 45cm can be considered to exert no potential biotoxicity, where AVS was much larger than SEM5.These revealed the biotoxicity of sediment demonstrated significant changes along vertical direction by displaying a layered distribution within 0~10cm, therefore to mix samples from different depths as a whole could not correctly assess the heavy metal biotoxicity of surface layer sediment.
Feng Li Yong-you Hu Shu-kun Liang Yan-mao Wen Wei-wei Song Ming-wei Song
Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial School of Environmental Science and Engineering Sun Yat-sen University Guangzhou, China
国际会议
成都
英文
1-3
2010-06-18（万方平台首次上网日期，不代表论文的发表时间）