Assessment of heavy metal impact on sediment quality of the Xiaoqinghe estuary in the coastal Laizhou Bay, Bohai Sea: Inconsistency between two commonly used criteria

MARINE POLLUTION BULLETIN

卷:83

Article

Zhuang, Wen^1,2,3  Gao, Xuelu¹ 

[1] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remedia, Yantai 264003, Shandong, Peoples R China

[2] Zaozhuang Univ, Coll City & Architect Engn, Zaozhuang 277160, Shandong, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

关键词: Marine pollution;    Environmental surveys;    Sediment analysis;    Coastal zone;    Geochemistry;    China;   

DOI  :  10.1016/j.marpolbul.2014.03.039

来源: Elsevier

【 摘 要 】

Surface sediments in the Xiaoqinghe estuary, southwestern coastal Laizhou Bay, were examined to assess the bio-toxic risk of heavy metals (Cd, Cu, Ni, Pb and Zn) with the effects range-low and effects rangemedian guidelines (ERL-ERMs) and the concentration ratio of simultaneously extractable metals to acid volatile sulfides ([SEMMAVS]). Based on the ERL-ERM guidelines, bio-toxic effect caused by Cu, Ni, Pb and Zn could be expected in the riverine surface sediments of the Xiaoqinghe estuary; and the surface sediments in the marine area were in good quality and only Ni might cause bio-toxic effect occasionally. The AVS-SEM guidelines revealed that no bio-toxic effect could be caused by any of the studied metals in both the riverine and marine sediments, since there were excess sulfides in surface sediments which could form water-insoluble substances with free metal ions and reduce the bioavailability of heavy metals. (C) 2014 Elsevier Ltd. All rights reserved.

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