氟乙酰胺的极谱测定法  

Determination of Fluoroacetamide by Polarography

作　　者：朱明芳[1] 龙宁[1] 张正奇[2] 

机构地区：[1]广东药学院药学系分析教研室,广东广州510224 [2]湖南大学化学化工学院,湖南长沙410082

出　　处：《环境与健康杂志》2003年第1期42-43,共2页Journal of Environment and Health

摘　　要：目的建立微量氟乙酰胺的极谱分析法。方法应用氟乙酰胺在高温强碱条件下的分解反应,利用极谱法对其分解产物形成的ALC-La-F-三元络合物在pH=4.90的含KNO3的六次甲基四胺缓冲液中的-0.67V处的络合物吸附波进行测定。结果在所选定的最佳条件下,氟乙酰胺的线性范围为5.0×10-8～1.2×10-6mol/L,回归方程y=3.49x+0.042,相关系数r=0.9996,方法的检测下限为2.0×10-8mol/L。结论该法可用于测定面粉中的氟乙酰胺。Objective To establish a polarographic method for detecting fluoroacetamide.Methods On the condition of strong basic solution with high temperature fluoroacetamide was decomposed to form a decomposed product ALC-La-F - complex.In a pH4.90buffer solution containing KNO 3 and hexamethylenetetramine,the decomposed product was determined with com-plex-adsorptive wave at-0.67V by polarography.Re sults The detection limit and linear range of the method was2.0×10 -8 mol/L and5.0×10 -8 -1.2×10 -6 mol/L respectively.The regressive equation was y=3.49x+0.042with a correlation coefficient r=0.9996.The method had been applied to the determination of fluoroacetamide in wheat flour samples satisfyingly.Conclu-sion This method was simple and suitable for the determination of fluoroacetamide in flour.

关 键 词：极谱法 酰胺类 氟乙酰胺 有机氟杀虫剂 

分 类 号：S482.32[农业科学—农药学] O657.14[农业科学—植物保护]