文献类型：期刊文献

中文题名：湛江港湾表层沉积物的氧化还原特征及其影响因素

英文题名：Redox traits and its influence factors in surface sediments in Zhanjiang Harbor

作者：张际标[1];谢群[1];施玉珍[1];李雪英[1];陈春亮[1];孙省利[1]

机构：[1]广东海洋大学海洋资源与环境监测中心,广东湛江524088

年份：2011

卷号：30

期号：6

起止页码：823

中文期刊名：海洋环境科学

外文期刊名：Marine Environmental Science

收录：CSTPCD、、CSCD2011_2012、北大核心2008、北大核心、CSCD

基金：海洋公益性行业科研专项(200905005-05)

语种：中文

中文关键词：氧化还原特性;影响因素;表层沉积物、湛江港

外文关键词：redox trait; influence factor; surface sediment; Zhanjiang Harbor

中文摘要：为详细了解湛江港湾海洋沉积物的氧化还原特征,于2009年5月调查了湛江港湾表层沉积物氧化还原电位的大小、分布特征及其影响因素。结果表明,湛江港湾表层沉积物总体上为还原环境,Eh在-63～-268 mV之间变化,大部分在-230 mV左右;从湾内到湾外,表层沉积物的Eh区域分布不均一,同一断面近岸较低、中部较高。相关性分析表明,海湾表层沉积物的氧化还原行为主要受硫化物影响,而pH、TOC的影响甚微,其原因主要是受到水动力因素和航道疏浚作业的影响。

外文摘要：In order to understand the redox characteristics in the marine sediments deeply,the Eh and its influence factors in the surface sediments in the Zhanjiang Bay were investigated in May,2009.The results showed that the most of Eh were about-230 mV with a changing range from-63 mV to-268 mV,which meant that the surface sediment environment in the study area was in a reductive condition.From inside to outside of the Zhanjiang Bay,the distribution of Eh value was zonal and heterogeneous.In the same section,the Eh value was much lower near coastal area than middle area.Based on the relativity analysis,the redox behavior in the surface sediments of the Zhanjiang Bay was dominantly controlled by the sulfide content rather than by pH or TOC.And its possible reasons were due to the influences of marine hydrodynamic factors and the sea-route dredging.