作者:Guomin Shan、Whitney R Leeman、Donald W. Stoutamire、Shirley J. Gee、Daniel P. Y. Chang、Bruce D. Hammock
DOI:10.1021/jf000351x
日期:2000.9.1
Permethrin is a predominant pyrethroid widely used in agriculture and public health. A competitive enzyme-linked immunosorbent assay (ELISA) for the detection of permethrin was developed. Two haptens, the trans- and cis-isomers of 3-(4-aminophenoxy)benzyl-3-(2, 2-dichloroethenyl)-2,2-dimethylcyclopropanecarboxylate, were synthesized and conjugated with thyroglobulin as immunogens. Four antisera were
苄氯菊酯是主要用于农业和公共卫生的拟除虫菊酯。开发了一种竞争性酶联免疫吸附测定(ELISA),用于检测氯菊酯。合成了两个半抗原,即3-(4-氨基苯氧基)苄基-3-(2,2-二氯乙烯基)-2,2-二甲基环丙烷羧酸酯的反式和顺式异构体,并与甲状腺球蛋白作为免疫原偶联。产生了四种抗血清,并针对六种不同的包被抗原进行了筛选。所得ELISA的I(50)值为2.50 microg / L,并且与其他主要拟除虫菊酯(如esfenvalerate,氯氰菊酯,溴氰菊酯和氯氟菊酯)的交叉反应性相对较低。发现甲醇是此ELISA的最佳溶剂,在浓度为40%(v / v)时观察到最佳灵敏度。pH值在5.0和8.0之间时,测定参数不变,而较高的离子强度(> 0.2 M PBS)会强烈抑制吸光度。根据该方法分析了用苄氯菊酯强化的河水样品,并通过GC-MS进行了验证。观察到良好的回收率和与峰值水平的相关性,这表明该免疫