典型增塑剂污染物对藻类的抑制特性及机制

Plasticizer has emerged as a kind of pollutant caused turbulence of social stability and economic order. It is well understood that plasticizer is toxic to human beings, especially reproductive system. It is reported that plasticizer is widely distributed in the great rivers and important sources of drink water all over China. Some research reported that plasticizer inhibited algal growth and hinted eco-toxicity potential. The environmental behavior and antialgal mechanisms of plasticizer are seldom reported. This project will 1) research antialgal toxicity of no less than 10 kinds of important plasticizers and evaluate eco-risk ; 2) typical plasticizers effects on algal physiological activities, enzyme systems, antioxidation system and cell ultrastructure; and 3) reveal plasticizer antialgal activity sites and mechanisms. The present research will provide scientific support of revealing of eco risk of plasticizer.

增塑剂已经成为我国影响社会稳定、经济秩序的广泛分布的一类污染物，其对人体的毒性作用已广为人知。研究表明增塑剂在我国主要水系、水源地都有分布。有研究表明增塑剂能抑制藻类等水生生态系统初级生产力的生长，从而对生态系统健康存在潜在威胁。但增塑剂在水体中的行为、对藻类抑制作用机制仍不明确。本研究拟通过1）比较主要增塑剂（10种以上）对主要初级生产力（5种以上藻类）的抑制作用强弱，系统评价其生态风险；2）典型增塑剂对藻类生理活性、酶系统、抗氧化体系、细胞结构的影响；3）揭示增塑剂抑制藻类的作用位点和抑制机制，为揭示增塑剂的生态危害提供理论支持。

针对增塑剂已成为近岸海域重要的环境激素、但其环境行为尚不明确的问题，重点研究了增塑剂对藻类的抑制作用、抑制机理、藻类降解增塑剂的途径、海水中增塑剂的快速检测方法建立以及我国近岸海域增塑剂分布等，发现：增塑剂侧链越短，毒性越强；增塑剂主要同多抑制光合作用电子传递链和呼吸作用电子传递链抑制藻类生长；藻类可以通过脱甲基作用对增塑剂进行降解；建立了固相微萃取-气相色谱-质谱联用的海水中增塑剂检测方法；发现黄河口、莱州湾等海域增塑剂含量较高。.通过研究，发表SCI论文9篇。.研究成果为我国近岸海域水质改善、生态系统保护以及水产养殖等提供了技术支持。