短裸甲藻对四种邻苯二甲酸酯的吸附降解研究  

Adsorption and degradation of four phthalate esters in Gymnodinium breve

作　　者：管旭 赵莎莎 李锋民[2] GUAN Xu;ZHAO Shasha;LI Fengmin(Shandong Academy for Environmental Planning, Jinan 250101 ; College of Environmental Science and Engineering, Institute of Coastal Environmental Pollution Control, Key Lab of Marine Environmental Science and Ecology, Ministry of Education, Ocean University of China, Shandong Qingdao 266100, China)

机构地区：[1]山东省环境规划研究院,山东济南250101 [2]中国海洋大学环境科学与工程学院近海环境污染控制研究所海洋环境与生态教育部重点实验室,山东青岛266100

出　　处：《环境与可持续发展》2018年第5期149-154,共6页Environment and Sustainable Development

摘　　要：增塑剂是一种广泛存在于环境中的化学材料。邻苯二甲酸酯(Phthalic acid esters,简称PAEs)是增塑剂的主要种类,且易通过浸出、蒸发等迁移途径被释放到环境中,对环境造成污染。本研究选取了在海洋中广泛分布的典型藻类—短裸甲藻(Gymnodinium breve)作为受试生物。系统地比较了短裸甲藻对邻苯二甲酸二甲酯(Dimethyl phthalate,简称DMP)、邻苯二甲酸二乙酯(Diethyl phthalate,简称DEP)、邻苯二甲酸二烯丙酯(Diallyl phthalate,简称DAP)、邻苯二甲酸二丙酯(Dipropyl phtalate,简称DPr P)四种不同烷基链长度的PAEs的吸附降解情况。结果表明,PAEs烷基链越长,对短裸甲藻的生长抑制作用越强;藻液中PAEs浓度明显低于海水中PAEs浓度,证明藻类可以显著减少海水中的PAEs含量;与低藻密度的藻培养体系相比,高藻密度体系对溶解态的PAEs去除能力更强;高藻密度的藻体富集PAEs能力较强,但是平均到每个藻细胞,其富集能力远不如低藻密度的藻体;高藻密度的短裸甲藻对4种PAEs的降解能力如下:DMP(92.8%)>DEP(66.0%)>DAP(53.1%)>DPr P(42.6%)。本研究探讨了PAEs在藻培养体系中的降解过程,为PAEs在水环境中的消除奠定理论基础。Plasticizers are a variety of chemicals which widely exist in the environment. Phthalic acid esters（ PAEs） are the most important members and they can probably be transferred into the environment by exudation and vaporization processes,etc. And PAEs can become environmental pollutants. Gymnodinium breve,a species which is widely distributed around the world,is selected in this research to adsorb and degrade four kinds of PAEs： Dimethyl phthalate（ DMP）,Diethyl phthalate（ DEP）,Diallyl phthalate（ DAP） and Dipropyl phtalate（ DPr P）. The results showed that PAE with longer alkyl chain exhibited more efficiency in depressing algae’s growth. The concentrations of PAEs in solution became obviously lower than those in the seawater,demonstrating that algae could significantly decrease PAEs concentrations. Compared to lower-dense algae systems,higher-dense algae systems were more efficient in reducing PAEs concentrations. Algae cells in high-dense systems altogether absorbed more PAEs than those in low-dense systems,but the individuals in the later over-performed those in the former. The abilities to degrade different PAEs were listed in descending order as follows： DMP（ 92. 8%） 〉 DEP（ 66. 0%） 〉DAP（ 53. 1%） 〉DPr P（ 42. 6%）. This research explored such degradation process in an algae cultural system to throw some light on PAEs’ removal theory.

关 键 词：短裸甲藻 邻苯二甲酸酯 降解机理 

分 类 号：X21[环境科学与工程—环境科学]