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Volume 34 Issue 4
Jul.  2015
Article Contents

Citation:

Distributions and risk evalutionof heavy metals in Dalian coastal areas

  • Received Date: 2014-04-28
    Accepted Date: 2014-07-22
  • The inductively coupled plasma mass spectrometry(ICP-MS)was employed in the chemical composition analysis for the surface seawater,surface sediments and shellfishes collected from Dalian coastal areas.Based on the results,the chemical features including heavy metal contents,distribution and enrichment coefficient,and comprehensive evaluation for pollution are discussed.The mean contents of chemical elements (Zn,Cu,Cr,Cd,Pb,Hg)were 15.2,1.21,0.59,0.13,0.104,0.038 g/L in surface seawater,51.810-6、11.210-6、20.410-6、0.0710-6、13.510-6、0.02110-6in sediments,and 10810-6、0.3610-6、1.2510-6、0.1110-6、0.01610-6 in shellfishes (except Cu).The enrichment capacity of heavy metals in sediments was higher than that in organisms.The heavy metal Pb had the highest enrichment in sediments while Cd and Zn could be most strongly absorbed by scallops and oysters,respectively.The result shows that the surface sediments suffered from relatively low heavy metal pollution,whereas Hg had certain potential ecological risk.
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  • [1] 张丽洁,王 贵,姚 德,等.近海沉积物重金属研究及环境意义[J].海洋地质动态,2003,19(3):6-9.[3]王化泉.河口和近岸海洋沉积物中的重金属及其污染评价[J].海洋环境科学,1985,4(1):32-38.[4]郑 琳,崔文林,贾永刚.青岛海洋倾倒区沉积物重金属污染及其生态风险评价[J].海洋环境科学,2008,27(z2):45-48,59.[5]丘耀文,颜 文,王肇鼎,等.大亚湾海水、沉积物和生物体中重金属分布及其生态危害[J].热带海洋学报,2005,24(5):69-76.[6]黄厚见,平仙隐,李 磊,等.春、夏季长江口海水、沉积物及生物体中重金属含量及其评价[J].生态环境学报,2011,20(5):898-903.[9]庞艳华,隋 凯,王秋艳,等.大连近岸海域双壳贝类重金属污染调查与评价[J].海洋环境科学,2012,31(3):410-413.[10]邓承玉,周海龙,李玉虎,等.海口湾贝类重金属质量含量测定及其风险评价[J].热带生物学报,2013,4(3):209-213.[13]杜俊涛,陈洪涛,田 琳.北黄海表层沉积物中重金属含量及其污染评价[J].中国海洋大学学报:自然科学版,2010,40(增刊):167-172.[14]张 雷,秦延文,郑丙辉,等.环渤海典型海域潮间带沉积物中重金属分布特征及污染评价[J].环境科学学报,2011,31(8):1676-1684.[15]李淑媛,苗丰民,刘国贤.北黄海沉积物中重金属分布及环境背景值[J].黄渤海海洋,1994,12(3):20-24.[16]张远辉,杜俊民.南海表层沉积物中主要污染物的环境背景值[J].海洋学报,2005,27(4):161-166.
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Distributions and risk evalutionof heavy metals in Dalian coastal areas

  • 1. Key Laboratory for Ecological Environment in Coastal Areas (SOA), National Marine environmental Monitoring Center, Dalian 116023, China

Abstract: The inductively coupled plasma mass spectrometry(ICP-MS)was employed in the chemical composition analysis for the surface seawater,surface sediments and shellfishes collected from Dalian coastal areas.Based on the results,the chemical features including heavy metal contents,distribution and enrichment coefficient,and comprehensive evaluation for pollution are discussed.The mean contents of chemical elements (Zn,Cu,Cr,Cd,Pb,Hg)were 15.2,1.21,0.59,0.13,0.104,0.038 g/L in surface seawater,51.810-6、11.210-6、20.410-6、0.0710-6、13.510-6、0.02110-6in sediments,and 10810-6、0.3610-6、1.2510-6、0.1110-6、0.01610-6 in shellfishes (except Cu).The enrichment capacity of heavy metals in sediments was higher than that in organisms.The heavy metal Pb had the highest enrichment in sediments while Cd and Zn could be most strongly absorbed by scallops and oysters,respectively.The result shows that the surface sediments suffered from relatively low heavy metal pollution,whereas Hg had certain potential ecological risk.

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