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热带海洋学报 >

2016 , Vol. 35 >Issue 6: 89 - 101

DOI: https://doi.org/10.11978/2015135

海洋环境保护

深圳西部海域河流入海口沉积物酸可挥发性硫、同步提取重金属分布特征与生物毒性评价

  • 张际标 ,
  • 杨波 ,
  • 陈涛 ,
  • 陈春亮
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  • 广东海洋大学海洋资源与环境监测中心, 广东 湛江 524088
作者简介：张际标(1971-), 男, 江西省赣州市人, 副教授, 博士, 从事海洋资源与环境研究。E-mail: zhjbwxy@163.com

收稿日期: 2015-11-10

  修回日期: 2016-05-25

  网络出版日期: 2016-12-15

基金资助

海洋公益性行业科研专项 (201305038-6); 深圳市规划和国土资源委员会海域使用金项目(SZCG2013040968)

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Distribution characteristics of acid-volatile sulfide and simultaneously extracted metals in sediments in the western estuary of Shenzhen, and their toxic effects on organisms

  • ZHANG Jibiao ,
  • YANG Bo ,
  • CHEN Tao ,
  • CHEN Chunliang
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  • Monitoring Center for Marine Resources and Environment, Guangdong Ocean University, Zhanjiang 524088, China

Received date: 2015-11-10

  Revised date: 2016-05-25

  Online published: 2016-12-15

Supported by

The National Special Research Fund for Non-Profit Marine Sector (201305038-6); The Sea Using Fund of Urban Planning, Land and Resources Commission of Shenzhen Municipality (SZCG2013040968).

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摘要

对深圳西部海域7个河流入海口沉积物中酸可挥发性硫化物(AVS)和同步可提取重金属(SEM)的区域和垂直分布特征进行了研究, 对沉积物重金属的潜在生物毒性进行初步评价。结果表明: 深圳西部海域河流入海口沉积物AVS的含量范围为0.54~24.17μmol·g-1之间, 平均为10.74μmol·g-1, 分布规律为后海河河口>西乡河河口>新圳河河口>大沙河河口>铁岗水库洪排口>福永河河口>深圳河河口; ΣSEM含量范围为5.58~32.18μmol·g-1之间, 平均值为15.63μmol·g-1, 分布规律为铁岗水库洪排口>深圳河河口>福永河河口>新圳河河口>西乡河河口>后海河河口>大沙河河口。ΣSEM垂直分布规律与AVS相似, 都有先增高后降低趋势; 沉积物中AVS与沉积物有机碳(TOC)、粒度以及溶出液pH呈显著性相关, 河口区沉积物有机质含量越高、粒度越大、pH越高越有利于AVS生成; 对沉积物进行重金属生物毒性效应分析, 表层沉积物中(ΣSEM/AVS)、(ΣSEM-AVS)和(ΣSEM-AVS)/foc值(foc为有机碳百分含量)的变化范围分别为0.77~8.93、-5.58~16.85μmol·g-1和-244.30~2071.65μmol·g-1, 而柱状沉积物中(ΣSEM/AVS)、(ΣSEM-AVS)和(ΣSEM-AVS)/foc值的变化范围分别为0.38~8.93、-19.69~36.05μmol·g-1和-1278.27~2931.28μmol·g-1。其中, 福永河河口、铁岗水库洪排口和深圳河河口沉积物重金属表现为高生物毒性效应, 应加强重金属污染监控。

关键词： 酸可挥发性硫化物; 同步可提取重金属; 生物毒性效应; 河流入海口; 深圳西部海域

本文引用格式

张际标 , 杨波 , 陈涛 , 陈春亮 . 深圳西部海域河流入海口沉积物酸可挥发性硫、同步提取重金属分布特征与生物毒性评价[J]. 热带海洋学报, 2016 , 35(6) : 89 -101 . DOI: 10.11978/2015135

Abstract

The horizontal and vertical distributions of acid volatile sulfide (AVS) and simultaneously extracted metals (SEM) in the sediment from seven estuaries along the Shenzhen coast were studied. The potential risks of heavy metals to benthic organisms in the sediment were also preliminary evaluated. The concentration of AVS in the surface sediment ranged from 0.54 to 24.17 μmol·g-1 with an average of 10.74 μmol·g-1. The sediment concentration of AVS in the Shenzhen River estuary was the lowest, and that in the Houhai River estuary was the highest. The spatial distribution of AVS was in the order of Houhai River estuary>Xixiang River estuary>Xinzhen River estuary>Dasha River estuary>Tiegang Reservoir estuary>Fuyong River estuary>Shenzhen River estuary. The concentration of ΣSEM was between 5.58 to 32.18 μmol·g-1 with an average of 15.63 μmol·g-1. The concentration of ΣSEM in the Dasha River estuary was the lowest, and that in the Fuyong River estuary was the highest. The spatial distribution of ΣSEM was in the order of Tiegang Reservoir estuary>Shenzhen River estuary> Fuyong River estuary>Xinzhen River estuary>Xixiang River estuary>Houhai River estuary>Dasha River estuary. The spatial distributions of AVS and SEMs were consistent. The vertical diversification of AVS increased at first and then decreased, which was similar to ΣSEM. The TOC (total organic carbon), particle size and pH were significantly correlated with AVS in the sediment. We found that high organic matter content, large particle size and high pH were favorable to the formation of

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