多环芳香烃的特性及其对藻类的毒性(英文)

Properties of polycyclic aromatic hydrocarbons and their toxicity on algae

多环芳香烃(PAHs)在环境中的污染可导致严重的健康问题,因而PAHs对人类和生态系统的影响引起了各界的广泛关注.藻类在生态系统中起重要的初级生产者的作用,且藻类群落的改变势必会严重影响水生态系统的平衡,然而有关PAHs的特性及其对藻类的毒性的资料却相对缺乏而分散.介绍了PAHs的化学结构、基本特征、来源和在环境中的命运,重点分析了PAHs毒性的激活和对不同藻类的特异性毒性影响.

Contamination of polycyclic aromatic hydrocarbons (PAHs) in the environment is a serious public health problem and the impact of PAHs on human beings and ecosystems has attracted increasing public and academic concern.However, information related to the properties of PAHs and their toxicity on algae seems to be meager and widely scattered in spite that algae serve as major primary producers and play an important role in aquatic ecosystems, and any changes in algal community are likely to lead to major ecological consequences in aquatic ecosystems. The (present)review first describes the chemical structures and general properties of PAHs, then briefly introduces the sources and fate of PAHs in the environment and finally encompasses the toxicity of PAHs on algae, with emphasis on the activation of the toxicity of PAHs and algal species-specific differences in sensitivity to PAHs.