文献类型：期刊文献

中文题名：雷州半岛近海沉积物中腐殖质的分布和腐殖酸特性研究

英文题名：Research on distribution of humus and characterization of humic acids in offshore sediments of Leizhou Peninsula

作者：谢群[1,2];郭楚玲[2];党志[2];孙省利[1]

机构：[1]广东海洋大学海洋资源与环境监测中心;[2]华南理工大学环境与能源学院

年份：2016

卷号：35

期号：4

起止页码：112

中文期刊名：热带海洋学报

外文期刊名：Journal of Tropical Oceanography

收录：CSTPCD、、北大核心2014、CSCD2015_2016、北大核心、CSCD

基金：海洋公益性行业科研专项经费(201305038-6);广东省科技计划项目(2013B021600015)~~

语种：中文

中文关键词：腐殖质;腐殖酸;海洋沉积物;雷州半岛

外文关键词：Humus; Humic acids; marine sediments; Leizhou Peninsula

中文摘要：近海沉积物中腐殖质和腐殖酸对海洋环境污染具有一定的指示作用, 其对重金属、持久性有机污染物的迁移转化具有较大的影响。文章采用焦磷酸钠-氢氧化钠提取重铬酸钾氧化容量法对沉积物腐殖质的组成进行测定, NaOH 碱提取法对沉积物腐殖酸进行提取, 使用元素分析、紫外光谱、傅里叶变换红外光谱(FTIR)等方法对提取的腐殖酸进行表征。研究结果表明: 雷州半岛近海表层沉积物腐殖质含量较低, 在0.26%~2.36%之间, 平均值1.49%, 其中富里酸占51%,胡敏素占35%, 胡敏酸占14%, 腐殖酸占整个腐殖质的比例是65%。柱状沉积物腐殖化程度高于表层沉积物。雷州半岛近海沉积物中腐殖酸以富里酸和小分子有机物为主, 碳含量高, 硫含量低, 具有苯环、羧基、醇羟基、酚羟基、羰基及氨基等官能团, 腐殖化程度不高。研究结果将为雷州半岛沿海经济的开发和环境保护提供一定的指导意义。

外文摘要：Humus and humic acids in offshore sediments have certain indicative effects on marine environmental pollutions,which have great influences on migration and transformation of heavy metals and persistent organic pollutants. Thecompositions of humus in sediments were determined by the methods of sodium pyrophosphate-sodium hydroxide extractionand potassium dichromate volumetric; and the humic acids extracted by the method of NaOH alkaline extraction werecharacterized by the methods of elemental analysis, UV, Fourier transform infrared spectroscopy (FTIR), etc. The resultsshowed that the content of humus was very low in surface sediments of Leizhou Peninsula, between 0.26% and 2.36%, with anaverage of 1.49%, in which fulvic acid accounted for 51%, humin accounted for 35% and humic acid accounted for 14%.Humic acids accounted for 65% of the total humus. Humic acids in marine sediments of Leizhou Peninsula were mainly fulvicacid and small organic compounds. The carbon content was high, and the sulfur content was low with benzene ring, carboxyl,hydroxyl, phenolic hydroxyl, carbonyl, and amine functional groups. Humic substances in offshore marine sediments ofLeizhou Peninsula belonged to low degree of humification. These research results provided some guidance for coastal economic development and environmental protection of Leizhou Peninsula.