环境海洋学

珠江口磨刀门水域溶解态Cd、Pb分布的潮流变化特征*

  • 石荣贵 ,
  • 龙爱民 ,
  • 吴玲玲 ,
  • 兰圣迎
展开
  • 1. 国家海洋局南海环境监测中心, 广东 广州 510300;
    2. 热带海洋环境国家重点实验室(中国科学院南海海洋研究所), 广东 广州 510301;
石荣贵(1984~), 男, 福建省龙岩市人, 助理工程师, 硕士, 主要从事海洋化学测试与分析工作。E-mail: rgshi2010@126.com

收稿日期: 2014-08-27

  网络出版日期: 2015-08-21

基金资助

全球变化研究国家重大科学研究计划(2010CB951201); 国家自然科学基金广东省联合基金(U0933005)

Tidal variation in the distributions of dissolved Cd and Pb in the Modaomen Channel of the Pearl River Estuary

  • SHI Rong-gui ,
  • LONG Ai-min ,
  • WU Ling-ling ,
  • LAN Sheng-ying
Expand
  • 1. South China Sea Environment Monitoring Center, State Oceanic Administration, Guangzhou 510300, China;
    2. State Key Laboratory of Tropical Oceanography (South China Sea Institute of Oceanology, Chinese Academy of Sciences), Guangzhou 510301, China;

Received date: 2014-08-27

  Online published: 2015-08-21

Supported by

; *感谢中国科学院南海海洋研究所王军、张镇秋和李先鹏在现场采样过程中给予的大力协助。

摘要

潮流引起的水动力变化, 对河口水体中重金属的迁移转化行为具有重要的作用。于2011年9月进行了两个航次的断面与定点连续调查, 研究了潮流变化特别是咸潮入侵对磨刀门Cd、Pb分布的影响。结果表明, 小潮期间从河端到海端溶解态Cd浓度显著升高, 水柱Cd浓度发生分层现象, 大潮期间Cd的分布形式主要受海水稀释作用的影响; 磨刀门溶解态Pb大潮、小潮的断面分布特征较为复杂, 与Cd分布特征存在较大差异。小潮定点连续调查期间, Cd分层明显, Pb的分层则不显著; 大潮定点连续调查期间, 受到强咸潮的作用, Cd、Pb分布主要受物理稀释作用的影响。

关键词: Cd; Pb; 潮流; 磨刀门

本文引用格式

石荣贵 , 龙爱民 , 吴玲玲 , 兰圣迎 . 珠江口磨刀门水域溶解态Cd、Pb分布的潮流变化特征*[J]. 热带海洋学报, 2015 , 34(4) : 83 -89 . DOI: 10.11978/j.issn.1009-5470.2015.04.012

Abstract

Tides can cause changes in hydrodynamics and have great influence on the fate of heavy metals in estuary. The distributions of dissolved Cd and Pb in the Modaomen Channel were investigated in September 2011. During neap tide, Cd concentration increased from river end member to sea end member; Cd stratification was also found. The fate of Cd was subjected to dilution by sea water of low Cd concentration during spring tide. There were large differences of sectional distribution characteristics between Cd and Pb. The sectional distribution of Pb was complicated. During the neap tide anchor survey, Cd stratification was obvious. During the spring tide anchor survey when strong salt-water intrusion occurred, the fates of Cd and Pb were mainly decided by physical dilution of sea water.

Key words: Cd; Pb; tide; Modaomen Channel

参考文献

1 包芸, 刘杰斌, 任杰, 等. 2009. 磨刀门水道盐水强烈上溯规律和动力机制研究[J]. 中国科学(G辑:物理学 力学 天文学), 39(10): 1527-1534.
2 陈康, 方展强, 安东, 等. 2013. 珠江口沿岸水域表层沉积物中重金属含量分布及污染评价[J]. 应用海洋学报, 32(1): 20-28.
3 方神光, 马腾蛟. 2013. 珠江河口盐水入侵对有机污染物的影响概述[J]. 海洋环境科学, 32(5): 787-790.
4 贾良文, 吴超羽, 雷亚平, 等. 2005. 珠江口磨刀门枯季表层沉积物特征[J]. 海洋工程, 23(1): 62-68.
5 李开枝, 黄良民, 张建林, 等. 2010. 珠江河口咸潮期间浮游植物的群落特征[J]. 热带海洋学报, 29(1): 62-68.
6 马玉, 李团结, 王迪, 等. 2011. 珠江口滨海湿地沉积物重金属污染现状及潜在生态危害[J]. 热带地理, 31(4): 353-356.
7 任杰, 刘宏坤, 贾良文, 等. 2012. 磨刀门水道盐度混合层化机制[J]. 水科学进展, 23(5): 715-720.
8 石荣贵, 龙爱民, 周伟华, 等. 2012. 珠江口磨刀门咸潮及其对环境要素变化的影响[J]. 海洋科学, 36(8): 86-93.
9 宋晓飞, 石荣贵, 孙羚晏, 等. 2014. 珠江口磨刀门盐水入侵的现状与成因分析[J]. 海洋通报, 33(1): 7-15.
10 苏波, 刘吉, 卢陈, 等. 2012. 枯水期磨刀门与洪湾水道盐度比较分析[J]. 人民珠江, 33(S1): 17-20.
11 肖莞生, 陈子燊. 2010. 珠江河口区枯季咸潮入侵与盐度输运机理分析[J]. 水文, 30(3): 10-15.
12 徐礼强, 于海霞, 胡晓张, 等. 2013. 基于分层系数法的磨刀门水道咸淡水混合规律研究[J]. 人民珠江, 34(1): 28-35.
13 杨蕾, 李春初, 田向平. 2006. 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, 15(3): 490-494.
14 郑庆华, 何悦强, 张银英, 等. 1995. 珠江口咸淡水交汇区营养盐的化学自净研究[J]. 热带海洋, 14(2): 68-75.
15 ACHTERBERG E P, BRAUNGARDT C. 1999. Stripping voltammetry for the determination of trace metal speciation and in-situ measurements of trace metal distributions in marine waters [J]. Analytica Chimica Acta, 400(1): 381-397.
16 GONCALVES G M, CARVALHO C E V. 2006. Particulate heavy metal dynamics in a tropical estuary under distinct river discharge and tidal regimes, Southeastern, Brazil [J]. Journal of Coastal Research, 2(39): 1032-1035.
17 HARALAMBIDOU K, SYLAIOS G, TSIHARINTZIS V A. 2010. Salt-wedge propagation in a Mediterranean micro-tidal river mouth[J]. Estuarine Coastal and Shelf Science, 90(4): 174-184.
18 LAING G D, VOS R D, VANDECASTEELE B, et al. 2008. Effect of salinity on heavy metal mobility and availability in intertidal sediments of the Scheldt estuary[J]. Estuarine Coastal and Shelf Science, 77(4): 589-602.
19 LIU J B, BAO Y. 2011. Spacial distribution of salinity and the mechanism of saltwater intrusion in the Modaomen water channel of Pearl River Estuary [M]. Recent Progresses in Fluid Dynamics Research. American Institute of Physics: 405-407.
20 NEWTON A, ICELY J. 2008. Land ocean interactions in the Coastal Zone, LOICZ: Lessons from Banda Aceh, Atlantis, and Canute [J]. Estuarine Coastal and Shelf Science, 77(2): 181-184.
21 TURNER A. 2003. Salting out of chemicals in estuaries: implications for contaminant partitioning and modelling [J]. The Science of the Total Environment, 314-316(10): 599-612.
22 WAELES M, RISO R D, MAGUER J-F, et al. 2004. Distribution and chemical speciation of dissolved cadmium and copper in the Loire estuary and North Biscay continental shelf, France [J]. Estuarine, Coastal and Shelf Science, 59(1): 49-57.
23 WAELES M, RISO R D, MAGUER J-F, et al. 2008. On the distribution of dissolved lead in the Loire estuary and the North Biscay continental shelf, France [J]. Journal of Marine Systems, 72(1): 358-365.

文章导航

/