离子液体[C8mim]PF6对水生生物的毒性作用  

Toxicity of [C_8mim]PF_6 to aquatic organisms

作　　者：牧辉[1] 彭新晶[1] 戴宁[1] 陈继[2] 张凤君[1] 

机构地区：[1]吉林大学环境与资源学院,吉林长春130026 [2]中国科学院长春应用化学研究所,稀土化学与物理国家重点实验室,吉林长春130022

出　　处：《中国环境科学》2009年第11期1196-1201,共6页China Environmental Science

基　　金：国家水专项(2008ZX07207-007-04);“十一五”国家科技支撑计划项目(2006BAJ08B09);国家“863”项目(2007AA06A410)

摘　　要：运用评价化学品对水生生物毒性的标准试验方法,探讨离子液体1-辛基-3-甲基-咪唑六氟磷酸盐([C8mim]PF6)对普通小球藻、大型蚤和斑马鱼的毒性影响.结果表明,[C8mim]PF6在实验浓度下,对普通小球藻的生长和叶绿素a的产生均有抑制作用,浓度越高抑制作用越明显,且对叶绿素a含量的影响更为显著.高浓度组(200mg/L)可致死部分小球藻细胞;[C8mim]PF6对大型蚤的48hLC50为4.47mg/L,属于高毒性;[C8mim]PF6对斑马鱼的96hLC50为126.08mg/L,属于低毒性.[C8mim]PF6对这3种水生生物的抑制率/致死率(EC50/LC50)随时间呈规律性变化.[C8mim]PF6与藻类的亲和性及其亲脂特性可能是其对水生生物存在潜在毒性的2个主要原因.Three standard test methods for evaluating the toxicity of chemicals to aquatic organisms were applied to assess the toxic effects of 1-octyl-3-methylimidazolium PF6（[C8mim]PF6）on the three aquatic organisms： Chlorella vulgaris, Daphnia magna and zebra fish. Growth and chlorophyll a content of C vulgaris were inhibited in the experimental content of [C8mim]PF6, the inhibiting effect increased significantly with increasing concentrations, and the toxic effects on chlorophyll a content were stronger than that of growth. The C. vulgaris cell even would be lethal in the higher concentration group （200mg/L）. The toxic effects of [C8mim] PF6 was high-toxic to Daphnia magna, while was low-toxic to zebra fish, and the 48h LC50 and 96h LC50 was 4.47mg/L and 126.08mg/L, respectively. EC50/LC50 changed regularly with the test time. Maybe the two main reasons leading to the potential threat to the aquatic organisms were the affinity of [Csmim]PF6 with algae and lipophilic property itself.

关 键 词：[C8mim]PF6 毒性 普通小球藻 大型蚤 斑马鱼 

分 类 号：X171.5[环境科学与工程—环境科学]