叶蝉散,又名灭扑威,化学名称为2-异丙基苯基-N-甲基氨基甲酸酯,是近年来推广使用的一种高效低毒杀虫剂,但剂量大时,仍可使人畜受害。一九八七年七月,湖南省望成县首次发生了一起因食用被叶蝉散污染的新鲜蕹菜(又名空心菜、竹叶菜)导致22人食物中毒事件。目前,国内有关叶蝉散引起的食物中毒及其检验方法报导甚少,在我市也是第一次发生,现将检验方法报告如下:反应原理:叶蝉散经碱解产生的酚,在弱酸性条件下与对硝基苯胺重氦盐偶合,在碱性介质中,生成红色染料,与标准比色定量。 Leafhoppers scattered, also known as off Veterans, the chemical name for 2-isopropylphenyl-N-methyl carbamate, is the promotion of the use of a highly efficient low toxicity insecticides in recent years, but the dose is large, Still can make human and animal victims. In July 1987, for the first time in Wangcheng County, Hunan Province, 22 food poisoning incidents resulted from the consumption of fresh water spinach (aka spinacia and bamboo leafy vegetables) contaminated with leaf cicada. At present, there are few reports on food poisoning caused by leafhoppers and its test methods in China. It is also the first time in our city that the test method is reported as follows: Reaction principle: The phenol produced by leafhoppers through alkaline hydrolysis is weak Under acidic conditions and p-nitroaniline heavy helium salt coupling, in alkaline medium, generating red dye, colorimetric and standard.