用助灰剂灰化食品样品中铅的探讨广东省南海市卫生防疫站（５２８２００）梁焕强双硫腙法测定食品中铅，样品处理常用硝酸硫酸法和灰化法做有机质破坏，硝酸硫酸法使用大量酸，产生大量酸雾，不易被操作者接受；灰化法比较方便，但此法铅的损失很大，处理不当会影响测定结... Ashing with ashing agent in food samples of the discussion of Health and Epidemic Prevention Station of Nanhai City, Guangdong Province (528200) Liang Huanqiang Determination of lead in food by dithizone method, the sample processing commonly used nitric acid sulfate and ash as the organic matter damage, nitric acid sulfuric acid method A lot of acid, produce a lot of acid mist, not easy to be accepted by the operator; Ashing method is more convenient, but this method of lead loss, improper handling will affect the determination of knot ...