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热带海洋学报 >

2016 , Vol. 35 >Issue 4: 112 - 121

DOI: https://doi.org/10.11978/2015129

海洋环境学

雷州半岛近海沉积物中腐殖质的分布和腐殖酸特性研究

  • 谢群 ,
  • 郭楚玲 ,
  • 党志 ,
  • 孙省利
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  • 1. 广东海洋大学海洋资源与环境监测中心, 广东 湛江, 524088;
    2. 华南理工大学环境与能源学院, 广东 广州, 510006
谢群(1981—), 女, 江西省南昌市人, 高级实验师, 硕士, 研究方向为海洋环境监测, 海洋环评和环境工程等。E-mail: quner1981@126.com

收稿日期: 2015-10-19

  网络出版日期: 2016-08-04

基金资助

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)

收起

Research on distribution of humus and characterization of humic acids in offshore sediments of Leizhou Peninsula

  • XIE Qun ,
  • GUO Chuling ,
  • DANG Zhi ,
  • SUN Xingli
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  • 1. Monitoring Center for Marine Resources and Environment, Guangdong Ocean University, Zhanjiang 524088, China;
    2. College Environment and Energy, South China University of Technology, Guangzhou 510006, China

Received date: 2015-10-19

  Online published: 2016-08-04

Supported by

Public science and technology research funds projects of ocean (201305038-6); Science and Technology Planning Project of Guangdong Province(2013B021600015)

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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。

关键词： 腐殖质; 腐殖酸; 海洋沉积物; 雷州半岛

本文引用格式

谢群 , 郭楚玲 , 党志 , 孙省利 . 雷州半岛近海沉积物中腐殖质的分布和腐殖酸特性研究[J]. 热带海洋学报, 2016 , 35(4) : 112 -121 . DOI: 10.11978/2015129

Abstract

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. The compositions of humus in sediments were determined by the methods of sodium pyrophosphate-sodium hydroxide extraction and potassium dichromate volumetric; and the humic acids extracted by the method of NaOH alkaline extraction were characterized by the methods of elemental analysis, UV, Fourier transform infrared spectroscopy (FTIR), etc. The results showed that the content of humus was very low in surface sediments of Leizhou Peninsula, between 0.26% and 2.36%, with an average 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 fulvic acid 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 of Leizhou Peninsula belonged to low degree of humification. These research results provided some guidance for coastal economic development and environmental protection of Leizhou Peninsula.

Key words： Humus; Humic acids; marine sediments; Leizhou Peninsula

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