十二烷基硫酸钠对酶抑制光度法测定农药残留的增敏作用  

Detection of Pesticide Residues by Enzyme Inhibition Method with Sodium Dodecyl Sulfate as Sensitizer

作　　者：赵永福[1] 董学芝[1] 胡卫平[1] 孙心齐[1] 信建豪[1] 

机构地区：[1]河南大学化学化工学院,河南开封475001

出　　处：《化学研究》2006年第1期89-91,共3页Chemical Research

摘　　要：采用植物酯酶抑制法测定了蔬菜中农药的残留,研究了阴离子表面活性剂十二烷基硫酸钠对显色体系的作用.结果表明,十二烷基硫酸钠具有显著的增敏效果,其增敏幅度达到70%,同时对显色剂有增稳作用.用所建立的方法测定蔬菜中残留的敌敌畏,线性范围为0.11 mg/L^1.6 mg/L,最低检出限0.04 mg/L.Plant-esterase inhibition method is used to detect pesticide residues. The effects of sodium dodecyl sulfate on the color reaction system are studied. Results show that sodium dodecyl sulfate can increase the sensitivity of the color reaction system and the stability of the color reagent. The sensitivity is increased by 70 percent. With the method established to determine dichlorvos in vegetable, the linear relationship is in the range of 0.1 1 mg/L - 1.6 mg/L, and the detection limit is 0.04 mg/L.

关 键 词：十二烷基硫酸钠 酶抑制法 蔬菜 农药残留 敌敌畏 

分 类 号：O657.3[理学—分析化学]