THE TOXICITY OF TWO NEWLY-SYNTHESIZED COMPOUNDS ON SCENEDESMUS OBLIQUUS KǖTZ

作     者：SHENG Xiu-Mei 1,2, XIONG Li1 and TANG Hong-Feng1 (1. College of Life Science, Central China Normal University, Wuhan, China, 430079 2. Department of Biochemistry, College of Clinic Technology, Jiangsu University, Zhenjiang, Jiangsu, China, 212001) 

作者机构：College of Life Science Central China Normal University Wuhan 430079 

出 版 物：《水生生物学报》 (Acta Hydrobiologica Sinica)

年 卷 期：2006年第30卷第6期

页      面：676-679页

核心收录：

学科分类：07[理学] 09[农学] 0903[农学-农业资源与环境] 0713[理学-生态学] 

基　　金：National the Natioral Basic Reaearch Program(973 Program) (NO.2001 CCB00700) Wuhan Chengguang Scientific Program(NO.2002500103) 

主　　题：LY-04 and WSQIF Scenedesmus obliquus Kütz Toxicity 

摘      要：LY-04 and WSQIF are newly-synthesized compounds which were presented by the Institute of Pesticides Chemistry, Central China Normal University. LY-04 belongs to α-oxophosphonic acid derivatives, while WSQIF is an aromatic acetyl oxophosphonic acid derivative. In this study, the toxicity of LY-04 and WSQIF on Scenedesmus obliquus Kütz was examined. The EC 50 of LY-04 and WSQIF were determined in S. obliquus cells at 24h, 48h, 72h, 96h represented by cell density. Our data showed that the 24h, 48h, 72h, 96h EC 50 of LY-04 were 1983mg/L, 2943mg/L, 240mg/L and 65.0mg/L acetone, respectively, and the 24h, 48h, 72h, 96h EC 50 of WSQIF were 15.9mg/L, 53.0mg/L, 98.0mg/L and 28.8mg/L respectively. LY-04 displayed a higher insecticidal activity, while WSQIF showed a higher phytocidal activity. As LY-04 and WSQIF were designed to act as insecticide and herbicide, respectively, the results were in contrast to the anticipated ones. According to the toxicant classification standard, EC 50 of both substances was far higher than 3mg/L, while the toxicity of LY-04 and WSQIF to aquatic algae were fairly low, indicating that these two pesticides are rather safe to the aquatic ecosystem.