收稿日期: 2008-12-29
修回日期: 2009-04-23
网络出版日期: 2001-01-08
基金资助
中国博士后科学基金资助(20080440246); 深圳市环保局环境科研专项资金(深圳市水环境若干关键问题及其技术对策研究)
Evaluation of heavy-metal pollution in Shenzhen coastal sediments
Received date: 2008-12-29
Revised date: 2009-04-23
Online published: 2001-01-08
根据2000—2007年深圳近海海域表层沉积物的基础监测资料, 采用地累积指数和潜在生态危害指数两种评价方法, 对该区域沉积物中重金属的污染状况进行了分析和研究。结果表明, 深圳近海海域沉积环境在一定程度上已受到了重金属的污染, 除固戍近海外, 大部分海域基本上为II类沉积物, 其污染程度大小顺序为: 固戍近海＞深圳湾中＞深圳湾口＞沙头角湾口。其中沉积物中Cu和Zn超标严重, 固戍近海沉积物中Cu和Zn平均含量分别为128.96mg.kg-1和199.40mg.kg-1, 为III类沉积物。研究还表明, 深圳近海海域基本上不存在重金属潜在的生态危害, 7种重金属潜在的生态危害大小顺序为: Hg＞Cd＞Cu＞As＞Pb＞Cr＞Zn。
戴纪翠 , 高晓薇 , 倪晋仁 , 尹魁浩 . 深圳近海海域沉积物重金属污染状况评价[J]. 热带海洋学报, 2010 , 29(1) : 85 -90 . DOI: 10.11978/j.issn.1009-5470.2010.01.085
Based on the field data of Shenzhen coastal surface sediments from 2000–2007, methods of geo-accumulation index and potential ecological risk index are employed to evaluate heavy-metal pollution status in the area. Results show that Shenzhen coastal sediments have been polluted by heavy metals. The quality degree of most coastal sediments are Class II except for the Gushu Coast. The severity of heavy-metal pollution is: the Gushu Coast, the middle of the Shenzhen Bay, the mouth of the Shenzhen Bay, followed by the mouth of the Shatoujiao Bay that is least polluted. Among heavy metals found in the sediments, Cu and Zn are the two most seriously-polluting elements. The average contents of Cu and Zn in Gushu coastal sediments are 128.96mg·kg−1 and 199.40mg·kg−1, belonging to Class III; other coastal areas of Shenzhen belong to Class II. The results also reveal that there are no potential ecological risks for Shenzhen coastal sediments. The order of potential ecological risks is, Hg＞Cd＞Cu＞As＞Pb＞Cr＞Zn.
[1] 盛菊江, 范德江, 杨东方, 等. 长江口及其邻近海域沉积物重金属分布特征和环境质量评价[J]. 环境科学, 2008, 29(9): 2405-2412.
[2] 刘红磊, 尹澄清. 城市湖泊表层沉积物中的重金属污染现状及其稳定度分析−以武汉墨水湖为例[J]. 生态毒理学报, 2007, 2(2) : 214-219.
[3] LAWRENCE A L, MASON R P. Factors controlling the bioaccumulation of mercury and methylmercury by the estuarine amphipod Leptocheirus plumulosus[J]. Environmental Pollution, 2001, 111: 217-231.
[4] 弓晓峰, 陈春丽, 周文斌, 等. 鄱阳湖底泥中重金属污染现状评价[J]. 环境科学, 2006, 27(4): 732-736.
[5] CAEIRO S, COSTA M H, RAMOS T B, et al. Assessing heavy metal contamination in Sado Estuary sediment: an index analysis approach [J]. Ecological Indicators, 2005, (5): 151-169.
[6] 吴光红, 朱兆洲, 刘二保, 等. 天津城市排污河道沉积物中重金属含量及分布特征[J]. 环境科学, 2008, 29(2): 413-420.
[7] 赵一阳, 郡明才. 中国浅海沉积物地球化学[M]. 北京:科学出版社, 1994: 179-198.
[8] MÜLLER G. Index of geoaccumulation in sediments of the Rhine River [J]. Geojournal, 1969, 2: 108-118.
[9] RUBIO B, NOMBELAM A, VILAS F. Geochemistry of major and trace elements in sediments of the Ria de Vigo (NW Spain): an assessment of metal pollution [J]. Marine Pollution Bulletin, 2000, 40(11): 968–980.
[10] 滕彦国, 庹先国, 倪师军, 等. 应用地质累积指数评价沉积物中重金属污染: 选择地球化学背景的影响[J]. 环境科学与技术, 2002, 25(2): 7-9.
[11] 全国海岸带办公室《环境质量调查报告》编写组. 中国海岸带和海涂资源综合调查专业报告集——环境质量调查报告[ R] . 北京: 海洋出版社, 1989.
[12] 刘文新, 栾兆坤, 汤鸿霄. 乐安江沉积物中金属污染的潜在生态风险评价[J]. 生态学报, 1999, 19: 206-211.
[13] 冯慕华, 龙江平, 喻龙, 等. 辽东湾东部浅水区沉积物中汞潜在生态评价[J]. 海洋科学, 2003, 27(3): 52-56.
[14] FERNANDES H M. Heavy metal distribution in sediments and ecological risk assessment: the role of diagenetic processes in reducing metal toxicity in bottom sediments [J]. Environment Pollution, 1997, 97: 317-325.
[15] 甘居利, 贾晓平, 林钦, 等. 近岸海域底质重金属生态风险评价初步研究[J]. 水产学报, 2000, 24(6): 533-538.
[16] HAKANSON L. An ecological risk index for aquatic pollution control: a sediment to logical approach [J]. Water Research, 1980, 14 (8): 975-1001.
[17] 陈静生, 周家义. 中国水环境重金属研究[M]. 北京: 中国环境科学出版社, 1992, 168-170.
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