渤海湾和黄河口外表层海水中正构烷烃的组成、分布及来源  

Composition,distribution and source of N-alkanes in surface water in Bohai Bay and outside Huanghe Estuary

作　　者：王璟[1] 王春江[2] 赵冬至[3] 朱雷[2] 

机构地区：[1]北京市辐射安全技术中心,北京100089 [2]中国石油大学(北京)资源与信息学院,北京102249 [3]国家海洋环境监测中心,辽宁大连116023

出　　处：《海洋环境科学》2010年第2期242-245,共4页Marine Environmental Science

摘　　要：以渤海湾海域及黄河口外海域为研究区，采用GC／MS检测手段对两海域表层海水中溶解态有机质（〈0．7μm）及颗粒态有机质（〉0．7μm）的正构烷烃组分进行定性和定量分析，并分析其主要组成、分布、来源及输入方式，从而对正构烷烃类污染状况进行初步评价。定量分析的结果表明，渤海湾海域表层海水中正构烷烃含量为1570．9～1950．4ng／L，黄河口外海域为353．1—672．7ng／L；通过对研究区域表层海水中正构烷烃组成特征的分析得出，其主要来源是陆源高等植物、石油类产品和化石燃料燃烧产物，藻类对其贡献不能忽视；研究还表明，正构烷烃在溶解态和颗粒态有机质中分布是不同的，而且呈现某种规律。The N-alkanes in dissolved （ 〈0.7 μm） and particulate （ 〉0.7 μm） fraction in the Bohai sea （ Bohai Bay and outside Huanghe Estuary） were studied by GC/MS. The differences in their absolute concentrations and compositions were examined before analysis of their sources and input modes according to the distance from the coast and the fractions （ dissolved and particulate）. The quantitative results showed that total concentration of n-alkanes in Bohai Bay and outside Huanghe Estuary ranged from 1570.9 -1950.4 ng,/L and 353.1 - 672.7 ng/L respectively. The studies on dissolved and particulate matters showed that the distributions of different organic matters were distinct and represented some rules.

关 键 词：渤海湾和黄河口 正构烷烃 污染源解析 溶解态有机质 颗粒态有机质 

分 类 号：P734.4[天文地球—海洋化学]