中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
热门
烟台四十里湾柱状沉积物氮形态地球化学特征

文献类型:期刊论文

作者杨玉玮 ; 高学鲁 ; 李培苗
刊名环境科学
出版日期2012-10-15
卷号33期号:10页码:3449-3456
关键词连续浸取 氮形态 地球化学特征 柱状沉积物 四十里湾
ISSN号0250-3301
其他题名Geochemical Characteristics of Nitrogen in Core Sediments from Sishili Bay,China
产权排序中国科学院烟台海岸带研究所海岸带环境过程重点实验室;中国科学院研究生院;
通讯作者高学鲁 xlgao@yic.ac.cn
中文摘要采用连续浸取法首次对烟台四十里湾柱状沉积物不同形态的氮进行分离;并对其垂直地球化学特征和影响因素进行分析研究.可转化态氮分为离子交换态氮(IEF-N)、弱酸浸取态氮(WAEF-N)、强碱浸取态氮(SAEF-N)、强氧化剂浸取态氮(SOEF-N).结果表明;在沉积物表层(0~10 cm)可转化态氮占总氮的26.14%;并随着深度的增加而含量降低.各形态氮占可转化态氮比例平均大小顺序为SOEF-N(89.7%)>IEF-N(7.97%)>WAEF-N(1.19%)>SAEF-N(1.14%);说明SOEF-N是可转化态氮中的绝对优势态.不同形态氮与沉积物地球化学参数之间的相关关系分析表明;沉积物含水率、总有机碳、pH值、氧化还原电位、粒度组成等因素在一定程度上影响各形态氮含量;但各站位柱状样因其沉积物特征不同受各参数影响程度也不同.
英文摘要A sequential extraction technique was applied to gain the information about the fractionation of nitrogen in four core sediments from Sishili Bay,China.Based on the binding strength of different nitrogen compounds to the sediment matrix,ranging from easy to more difficult,four forms of labile nitrogen,i.e.nitrogen in ion exchangeable form(IEF-N),nitrogen in weak acid extractable form(WAEF-N),nitrogen in strong alkali extractable form(SAEF-N) and nitrogen in strong oxidant extractable form(SOEF-N),were extracted.The results showed that the content of labile nitrogen averagely accounted for about 26.14% of total nitrogen in the surface(0-10 cm) of core sediments and decreased gradually with depth,which implied that under natural geochemical conditions only a small part of sedimentary nitrogen could participate in recycling in a short time scale.The SOEF-N was the predominant form.The average percentages of the four labile nitrogen forms were 89.7% for SOEF-N,7.97% for IEF-N,1.19% for WAEF-N,and 1.14% for SAEF-N,respectively.The contents of nitrogen in different labile forms at different sampling sites are influenced by the combination of environmental factors such as sediment pH,redox potential and particle size.
学科主题地球化学
收录类别CSCD
资助信息中国科学院知识创新工程重要方向项目(KZCX2-YW-Q07-03,KZCX2-YW-JC203)
语种中文
CSCD记录号CSCD:4641922
公开日期2013-03-08
源URL[http://ir.yic.ac.cn/handle/133337/5861]  
专题烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室
推荐引用方式
GB/T 7714
杨玉玮,高学鲁,李培苗. 烟台四十里湾柱状沉积物氮形态地球化学特征[J]. 环境科学,2012,33(10):3449-3456.
APA 杨玉玮,高学鲁,&李培苗.(2012).烟台四十里湾柱状沉积物氮形态地球化学特征.环境科学,33(10),3449-3456.
MLA 杨玉玮,et al."烟台四十里湾柱状沉积物氮形态地球化学特征".环境科学 33.10(2012):3449-3456.

入库方式: OAI收割

来源:烟台海岸带研究所

浏览0
下载0
收藏0
其他版本

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。