珠江口表层沉积物中微量元素地球化学

甘华阳; 梁开; 郑志昌

doi:10.3724/SP.J.1140.2010.04131

珠江口表层沉积物中微量元素地球化学

广州海洋地质调查局, 广州 510760

基金项目:

中国地质调查局"我国重点海岸带滨海环境地质调查与评价"项目(20031100006)

详细信息

作者简介:
甘华阳(1979-),男,工程师,博士,从事海洋环境地质调查与研究,E-mail:ghuayang@126.com

中图分类号: P736.4
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出版历程
- 收稿日期: 2009-12-27
- 修回日期: 2010-01-28

TRACE ELEMENTS GEOCHEMICAL CHARACTERISTICS OF THE SURFACE SEDIMENTS OF PEAR RIVER ESTUARY

Guangzhou Marine Geological Survey, Guangzhou 510760, China

摘要

摘要: 采用多元统计方法分析了珠江口八大口门海域表层沉积物中13种微量元素的含量、相关性、空间分布规律和来源,探讨了元素空间分布的影响因素,并与珠江和南海北部浅海及其他区域沉积物微量元素含量进行了对比。珠江口表层沉积物中Sr、Zn、Zr和Ba的含量平均值都超过了100 μg/g;Cd和Hg的含量平均值都在1 μg/g以下;其他元素含量平均值则在21.5至82.3 μg/g之间。元素Co、Ga和Zr,Ba、Pb和Ga,Cu和Ni以及Cr和Ni之间存在较为明显的相关性。因子分析表明陆域岩石的风化剥蚀、人为排放和海洋生物是珠江口微量元素的主要物质来源。除Sr之外的所有被研究的微量元素的含量在空间上总体都呈现出近岸高、离岸低和某些口门区低值的特征,物质来源和沉积环境是影响微量元素空间分布的主要因素。研究区除Zr和Sr之外的微量元素,平均含量都高于上游的珠江沉积物和下游的南海北部浅海沉积物,Pb、As、Cd和Zn含量超过了全球页岩平均值。
- 微量元素 /
- 含量 /
- 空间分布 /
- 表层沉积物 /
- 珠江口
Abstract: The concentration, correlation, spatial distribution and sources of thirteen trace elements in the surface sediments from eight outles of the Pear River estuary were analyzed by multiple statistics; the factors affecting element spatial distribution were also discussed along with the comparison of the element concentration of this study with the sediments from the Pear River, shallow water of South China Sea and other areas. The mean concentration of Sr, Zn, Zr and Ba are higher than 100μg/g,while the values of Cd and Hg are lower than 1μg/g in surface sediment of Pear River estuary; the values of other analyzed elements lie within the range of 21.5~82.3μg/g. Evident correlations exist among Co, Ga, Zr; Ba, Pb, Ga and between Cu and Ni and Cr and Ni. Factor analysis indicates that weathering of land rock, artificial discharge and marine biology are the main sources of the trace elements in the surface sediments of the Pear River estuary. The spatial distribution of all studied elements except for Sr demonstrates a content decline with the distance from the shore and low values occur in some outlet areas. The source and sedimentary environment are two major factors influencing the distribution of the elements. The mean concentration of all studied trace elements aside from Zr and Sr in the study area exceeds the values from the Pear River and the shallow water of the South China Sea; the mean concentration of Pb, As, Cd and Zn in the study area are appreciably higher than the mean values of shale in the world.
- trace element /
- concentration /
- spatial distribution /
- surface sediment /
- Pear river estuary

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参考文献(20)

[1]	蓝先洪. 珠江口表层沉积物的地球化学特征[J]. 海洋湖沼通报, 1989(4):53-61.[LAN Xianhong. Geochemical characteristics of surface sediment in the Pear river estuary[J]. Transaction of Oceanology and Limology, 1989 (4):53-61.]
[2]	柯东胜, 关志斌, 余汉生, 等. 珠江口海域污染及其研究趋势[J]. 海洋环境科学, 2007, 26(5):488-491. [KE Dongsheng, GUAN Zhibin, YU Hansheng, et al. Environmental pollution and study trend in Pearl River Estuary[J]. Marine Environmental Science, 2007, 26(5):488-491.]
[3]	Liu W X, Li X D, Shen Z G, et al. Multivariate statistical study of heavy metal enrichment in sediments of the Pearl Ri-ver Estuary[J]. Environmental Pollution, 2003, 121(3):377-388.
[4]	王增焕, 林钦, 李纯厚, 等. 珠江口重金属变化特征与生态评价[J]. 中国水产科学, 2004, 11(3):214-219. [WANG Zenghuan, LIN Qin, LI Chunhou, et al. Variation features and ecological assessment of heavy metals from Pearl River estuary[J]. Journal of Fisher Sciences of China, 2004, 11(3):214-219.]
[5]	杨蕾, 李春初, 田向平. 珠江磨刀门河口表层沉积物中重金属含量及其分布特征[J]. 生态环境, 2006, 15(3):490-494. [YANG Lei, LI Chunchu, TIAN Xiangping. Concentrations and content distribution of heavy metals in surface sediments in Modaomen distributary mouth of Pearl River estuary[J]. Ecology and Environment, 2006, 15(3):490-494.]
[6]	Ip C M, Li X, Zhang G, et al. Trace metal distribution in sediments of the Pearl River Estuary and the surrounding coastal area, South China[J]. Environmental Pollution, 2007, 147:311-323.
[7]	Wang S, Cao Z, Lan D, et al. Concentration distribution and assessment of several heavy metals in sediments of west-four Pearl River Estuary[J]. Environmental Geology, 2008, 55:963-975.
[8]	左平, 汪亚平, 程珺, 等. 深圳湾海域表层和柱样沉积物中的重金属分布特征[J]. 海洋学报, 2008, 30(4):71-79. [ZUO Ping, WANG Yaping, CHENG Jun, et al. Distribution characteristics of heavy metals in surface sediments and core sediments of the Shenzhen Bay in Guangdong Province, China[J]. Acta Oceanologica Sinica, 2008, 30(4):71-79.]
[9]	龙云作. 珠江三角洲沉积地质学[M]. 北京:地质出版社, 1997:11-13.[LONG Yunzuo. Sedimentology of Pear River Delta[M]. Beijing:Geological Publishing House, 1997:11 -13.]
[10]	广东省地质矿产局. 广东省区域地质志[M]. 北京:地质出版社, 1988:6-279.[Bureau of Geology and Mineral Resources of Guangdong Province. Regional geology of Guangdong Province[M]. Beijing:Geological Publishing House, 1988:6 -279.]
[11]	Ouyang T P, Zhu Z Y, Kuang Y Q, et al. Dissolved trace elements in river water:spatial distribution and the influencing factor, a study for the Pearl River Delta Economic Zone, China[J]. Environmental Geology, 2006, 49(5):118-125.
[12]	广东省海岸带和海涂资源综合调查大队, 广东省海岸带和海涂资源综合调查领导小组办公室. 广东省海岸带和海涂资源综合调查报告[M]. 北京:海洋出版社, 1987:108-110.[The investigation team and leading group of the coastal fishery resource in Guangdong Province.The Investigation Report for the Coastal Fishery Resource in Guangdong Province[M].Beijing:Oceanography Press, 1987:108 -110.]
[14]	朱赖民, 高志友, 尹观, 等. 南海表层沉积物的稀土和微量元素的丰度及其空间变化[J]. 岩石学报, 2007, 23(11):2963-2980. [ZHU Laiming, GAO Zhiyou, Yin Guan, et al. Content and spatial change of rare earth element and trace element of surficial sediment in the South China Sea[J]. Acta Petrologica Sinica, 2007, 23(11):2963-2980.]
[15]	赵一阳, 鄢明才. 中国浅海沉积物地球化学[M]. 北京:科学出版社, 1994.[ZHAO Yiyang, YAN Mingcai. Geochemistry of China Shallow Sea Sediments[M]. Beijing; Science Press, 1994.]
[16]	陈绍谋, 路秀云, 吴传芝, 等. 南海北部沉积物的地球化学特征及元素赋存状态的研究[J]. 热带海洋学报, 1986, 5(4):62-70. [CHEN Shaomou, LU Xiuyun, WU Chuanzhi, et al. The study of geochemical characteristics of sediments elements and forms of existence of in northern South China Sea[J]. Tropic Oceanology, 1986, 5(4):62-70.]
[17]	邱礼生. 珠江口海区表层沉积物中重金属的分布模式[J]. 海洋通报, 1989, 8(1):36-43. [QIU Lisheng. Distribution patterns for heavy metals in surface sediment from Pear River estuary[J]. Marine Science Bulletin, 1989, 8(1):36-43.]
[18]	赵其渊, 李家丰, 丁红, 等. 黄河口沉积物微量元素的多元统计分析[J]. 中国海洋大学学报:自然科学版, 1985, 15(1):169-178. [ZHAO Qiyuan, LI Jiafeng, DING Hong, et al. The multivariate analysis of mciroelememts in sediments of nearshore area of the Huanghe River[J]. Journal of Shandong College of Oceanology, 1985, 15(1):169-178.]
[19]	Turekian K K, Wedepohl K H. Distribution of the elements in some major units of the earth's crust[J]. Geological Society of America Bulletin, 1961, 72(2):175-192.
[20]	梁美桃, 古森昌, 陈绍谋, 等. 南海北部表层沉积物中锆元素的地球化学初步研究[J]. 热带海洋学报, 1986, 5(2):20-26. [LIANG Meitao, GU Senchang, CHEN Shaomou et al. A preliminary study on the geochemistry of Zirconium in sediments of northern South China Sea[J]. Tropic Oceanology, 1986, 5(2):20-26.]
[21]	陈绍谋, 梁美桃, 吴必豪, 等. 南海表层沉积物的地球化学研究[J]. 矿物岩石地球化学通报, 1988(1):17-19.[CHEN Shaomou, LIANG Meitao, WU Bihao, et al. Geochemical study of surface sediment from South China Sea[J]. Bulletin of Mineralogy, Petrology and Geochemistry, 1988 (1):17-19.]