三氯生和三氯卡班对两栖动物蝌蚪的急性毒性  

Acute Toxicity of Triclosan and Triclocarban to Amphibian Tadpoles

作　　者：高昆[1,2] 陈娟[2] 李圆圆[2] 刘春[1] 秦占芬[2] Gao Kun Chen Juan Li Yuanyuan Liu Chun Qin Zhanfen(College of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang050018, China State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese A- cademy of Sciences, Beijing 100085, China)

机构地区：[1]河北科技大学环境科学与工程学院,石家庄050018 [2]中国科学院生态环境研究中心环境化学与生态毒理学国家重点实验室,北京100085

出　　处：《生态毒理学报》2016年第4期226-231,共6页Asian Journal of Ecotoxicology

基　　金：国家自然科学基金项目(21377153);中国科学院战略性先导科技专项(B类)(XDB14040102)

摘　　要：三氯生(TCS)和三氯卡班(TCC)是个人护理品中常用抗菌剂,在水体中普遍存在,但目前其对两栖动物的毒性研究仍较少。本研究以黑斑蛙蝌蚪和非洲爪蛙蝌蚪为受试生物,研究TCS和TCC对蝌蚪的急性毒性。将处于第一个蝌蚪发育期的黑斑蛙蝌蚪(Gosner 26期)和非洲爪蛙蝌蚪(NF 46期)分别暴露于系列浓度的TCS和TCC,测定其对蝌蚪的半数致死浓度(96 hLC_(50))。结果发现,TCS对黑斑蛙蝌蚪和非洲爪蛙蝌蚪的96 h-LC_(50)分别为441μg·L^(-1)和280μg·L^(-1);TCC对黑斑蛙蝌蚪和非洲爪蛙蝌蚪的96 h-LC_(50)为252μg·L^(-1)和217μg·L^(-1)。这些数据显示TCS和TCC对两种蝌蚪的毒性较高,且对非洲爪蛙蝌蚪毒性均略高于对黑斑蛙蝌蚪的毒性,整体来看TCC的毒性略高于TCS。Triclosan （TCS） and triclocarban （TCC） are broad-spectrum antimicrobial agents used in personal care products. They have become ubiquitous in aquatic environment due to its wide use. However, information concerning their toxicities to amphibians is limited. This study aimed to investigate acute toxicities of TCS and TCC to Pelophylax nigromaculatus tadpoles and Xenopus laevis tadpoles. P. nigromaculatus （Gosner stage 26） and X. laevis （NF stage 46） at the first tadpole developmental stage were exposed to series of concentrations of TCS and TCC. Median lethal concentrations （LC50） for 24 h, 48 h, 72 h and 96 h were calculated. We found that 96 h-LC50 for TCS to P. nigromaculatus tadpoles and X. laevis tadpoles were 441 μg·L^-1 and 280 μg·L^-1, respectively, while 96 h-LC50 for TCC to P. nigromaculatus tadpoles and X. laevis tadpoles were 252 μg·L^-1 and 217 μg·L^-1, respectively. The data show that TCS and TCC have relative high toxicity to P. nigromaculatus tadpoles and X. laevis tadpoles, with higher toxicity to the latter. The toxicity of TCC to tadpoles is slightly higher than that of TCS.

关 键 词：三氯生 三氯卡班 黑斑蛙 非洲爪蛙 蝌蚪 急性毒性 

分 类 号：X171.5[环境科学与工程—环境科学]