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Distribution and composition of polycyclic aromatic hydrocarbons in the surface microlayer and the subsurface microlayer from the Guangzhou Section of the Pearl River
Author(s): WU Xingrang, YIN Pinghe, ZHAO Ling, LI Songtao, YANG Yufeng College of Life Science and Technology, Jinan University, Guangzhou 510632
Pages: 868-
873
Year: 2010
Issue:
4
Journal: Acta Scientiae Circumstantiae
Keyword: 珠江; 微表层; 多环芳烃; 分布; 组成;
Abstract: 2009年3月对珠江广州段微表层与次表层水中多环芳烃(PAHs)的分布与组成进行了研究.结果表明,珠江广州段微表层和次表层水中16种溶解态PAHs浓度为622.0~2132.2ng·L-1,与DOC存在正相关关系;颗粒态为316.7~639.5ng·L-1,与颗粒物浓度存在明显的线性相关;PAHs的组成以2~3环为主,溶解态中2~3环PAHs占总量的86.0%~95.7%,明显高于颗粒态中2~3环PAHs占总量的(68.8%~84.0%)百分比,PAHs的辛醇-水分配系数及其物理化学性质是造成这一差异的主要原因;微表层对PAHs有一定的富集作用,富集因数EF在1.1~1.5之间(溶解态1.2~1.5,颗粒态1.1~1.3).
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