摘要
采用先浸提后蒸馏的方法对干燥食品样品进行前期处理,基于H3PO4介质中甲醛催化溴酸钾氧化溴甲酚紫的褪色反应,建立了测定甲醛含量的新方法.该方法的线性范围为0.1092-0.3120 mg/L,检出限为4.7×10^-5g/L.
Using pretreated method of distillation for drying food samples after soak and extraction,a new method of determined formaldehyde conten has been established in the catalytic reaction of formaldehyde on the oxidatic fading Bromocresol purple with potassium bromate in H3PO4 medium.Linearity of this methods ranged from 0.1092 mg/L to 0.3120 mg/L,limit of detection was 4.7×10^-5g/L.
出处
《甘肃联合大学学报（自然科学版）》
2011年第1期71-73,共3页
Journal of Gansu Lianhe University :Natural Sciences
关键词
催化光度法
甲醛
溴甲酚紫
溴化钾
catalytic photometry
formaldehyde
bromocresol purple
potassium bromate
作者简介
陈东平（1977-），男，甘肃庆阳人，陇东学院讲师，主要从事量子化学计算研究．
