珠江口及其邻近海域重金属的河口过程和沉积物污染风险评价

张亚南; 贺青; 陈金民; 林彩; 暨卫东

doi:10.3969/j.issn.0253 4193.2013.02.019

珠江口及其邻近海域重金属的河口过程和沉积物污染风险评价

doi: 10.3969/j.issn.0253 4193.2013.02.019

国家海洋局第三海洋研究所, 福建厦门361005

基金项目: 公益性科研专项(201105015) "近海重金属污染新型监测与风险评估技术业务化示范应用"。

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出版历程
- 收稿日期: 2012-05-22
- 修回日期: 2012-09-26

Heavy metals' process in water and pollution risk assessment in surface sediments of the Zhujiang River Estuary

Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China

摘要

摘要: 根据2006年到2007年,"908专项"珠江口附近海域海水与沉积物的调查资料,研究珠江口海域海水和沉积物中重金属含量分布特征;珠江口及附近海域海水中铜、铅、锌、镉、总铬、汞、砷的含量平均值均符合国家一类海水水质标准,采用数理统计相关分析计算出各重金属元素与各环境因子之间的相关,发现在河口重金属主要以稀释混合过程为主,悬浮颗粒物中重金属在酸化作用下以解吸作用为主,氧化还原作用的影响不大。沉积物中铜-锌、铅-锌、铜-镉、铅-镉、锌-镉、铅-铬,锌-铬、镉-铬8组元素间具有显著的相关性,表明它们具有相似的元素地球化学性质和来源;并运用 Hakanson潜在生态危害系数法对其潜在生态危害程度进行评估,珠江口沉积物的潜在生态风险的来源是镉和汞占据主要权重,尤其珠江口沉积物中镉的污染程度和潜在生态风险局部激增的特点值得重点关注。
- 珠江口 /
- 重金属 /
- 环境因素 /
- 污染风险评估
Abstract: On the basis of the data of four seasons of seawater and sediments from the 908 survey in the Pearl River Estuary, the concentration distribution characteristics of the heavy metals in seawater and sediments were made; results show that the mean content of seven heavy metals (Cu,Pb,Zn,Cd,Cr,Hg,As) in Pearl River Estuary and surrounding seas all belonged to the Ⅰ-level seawater quality standard, and the correlation between the heavy metals and environmental factors is obtained through mathematic statistic method. The result indicates that in the estuarine the heavy metals' main process is diluting and mixing,the heavy metals in SPM mainly desorb under acidification effect, and oxidation-reduction has little influence.There was a statistically significant correlation between the element Cu-Zn,Pb-Zn,Cu-Cd,Pb-Cd,Zn-Cd,Pb-Cr,Zn-Cr,and Cd-Cr in sediments,which indicates that they have similar geochemical properties and sources. The method of potential ecological risk index presented by Lars Hakanson was used to assess the heavy metals' ecological risk.The main source of the potential ecological risk of the sediment are Cd,Hg, which is worth the key attention that the pollution levels and the potential ecological risks of Cd local surged in sediments.
- Zhujiang River Estuary /
- heavy metals /
- environmental factors /
- pollution risk assessment

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参考文献(13)

黄小平, 田磊, 彭勃, 等. 珠江口海域环境污染研究进展[J]. 热带海洋学报, 2010, 29(1): 1—7.

郭鹏然, 仇荣亮, 王畅, 等. 珠江口桂山岛沉积物中重金属的污染评价和形态分布特征[J]. 海洋环境科学, 2011, 30(2): 167—171.

马德毅, 王菊英. 中国主要河口沉积物污染及潜在生态风险评价[J]. 中国环境科学, 2003, 23(5): 521—525.

de Vallejuelo S F O, Arana G, de Diego A, et al. Risk assessment of trace elements in sediments:The case of the estuary of the Nerbioi-Ibaizabal River (Basque Country) [J].Journal of Hazardous Materials, 2010, 181 (1/3): 565—573.

Demirel Z, Kulege K. Heavy metal contamination in water and sediments of an estuary in southeastern Turkey[J]. International Journal of Environment and Pollution, 2004, 21(5): 499—510.

Jain C K, Sharma M K. Distribution of Trace Metals in Hindon River System, India[J]. Journal of Hydrology, 2001, 253: 81—90.

Charles W Martin. Heavy metal storage in near channel sediments of the Lahn River, Germany[J]. Geomorphology, 2004,61: 275—285.

Lee S V, Cundy A B. Heavy metal contamination and mixing processes in sediments from the Humber Estuary, Eastern England[J]. Estuarine, Coastal and Shelf Science,2001,53: 619—636.

Hakanson L.An ecological risk index for aquatic pollution control: a sedimentological approach[J].Water Research,1980,14(8):975—1001.

中华人民共和国国家标准,GB 17378-2007 海洋监测规范[S].北京:中国标准出版社,1999.

中华人民共和国国家标准,GB 3097-1997 海水水质标准[S].北京:中国标准出版社,1998.

中华人民共和国国家标准,GB 18668-2002海洋沉积物质量[S].北京:中国标准出版社,2002.

甘华阳,梁开,郑志昌.珠江口沉积物的重金属背景值及污染评价分区[J].地球与环境,2010,38(3):344—350.

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