海底表层沉积物腐蚀性环境特征与评估--以三亚湾为例  

Characteristics and evaluation of corrosive environment of surface sediments:a case study of the Sanya bay

作　　者：卞培旺 陈法锦[1] 张叶春[2] 周欣 刘兴健 徐玉芬[2] BIAN Pei-wang;CHEN Fa-jin;ZHANG Ye-chun;ZHOU Xin;LIU Xing-jian;XU Yu-fen(Guangdong Province Key Laboratory for Coastal Occan Variation and Disaster Prediction Technologies,Guangdong Ocean University,Zhanjiang 524088,China;South China Sea Institute of Oceanology,Chinese Academy of Sciences,Guangzhou 510301,China)

机构地区：[1]广东海洋大学广东省近海海洋变化与灾害预警重点实验室,广东湛江524088 [2]中国科学院南海海洋研究所,广东广州510301

出　　处：《海洋环境科学》2020年第4期563-569,共7页Marine Environmental Science

基　　金：广东省自然科学基金项目(2016A030312004);广东海洋大学创新强校项目(GDOU2014050201,GDOU2013050201,GDOU2013050215,GDOU2013050315,GDOU2016050260)。

摘　　要：随着海底管线工程建设的日益增多,海底沉积物的腐蚀环境越来越受到关注。本文根据2017年3月在三亚湾内采集的海底沉积物,对其类型、pH、Eh(氧化还原电位)、有机碳含量、全盐量、Fe^3+/Fe^2+、硫化物和硫酸盐还原菌等腐蚀因子的综合分析,判定了三亚湾沉积物的氧化还原环境,评价了沉积物的腐蚀性。综合评价认为,三亚湾海底沉积物整体上呈现较强氧化环境,局部表现为弱氧化环境,腐蚀强度较弱,比较适合海底管线工程项目的建设。With the increasing construction of submarine pipeline projects, the corrosive environment of submarine sediments has attracted more and more attention. The sediments collected in Sanya bay In March2017, according to the comprehensive analysis of corrosion factors such as type, pH, Eh(Redox potential),organic carbon content, total salt content, Fe^3+/Fe^2+, sulfides and sulfate reducing bacteria of the sediments.determined the redox environment of the sediment and evaluated the corrosivity of the sediment. According to the evaluation, the sediments in the seabed of the Sanya bay as a whole show strong oxidizing environment, a weak oxidizing environment locally, and weak corrosion intensity, which is more suitable for the construction of a submarine pipeline project.

关 键 词：沉积物 腐蚀因子 氧化环境 三亚湾 

分 类 号：P736.41[天文地球—海洋地质]