湿法快速消解-原子荧光光谱法测定蔬菜中的总砷

打开文本图片集

摘 要：本文建立湿法快速消解-原子荧光光谱法测定蔬菜中的总砷含量。结果表明，砷浓度在0～10 μg·L-1时，方法的线性关系良好，相关系数大于0.999，检出限为0.02 μg·L-1，回收率为93.3%～102.4%，相对标准偏差为2.9%～4.5%。该方法操作简便，重现性良好，准确可靠。

关键词：湿法快速消解；原子荧光光谱法；蔬菜；总砷

Determination of Total Arsenic in Vegetables by Wet Rapid Digestion Atomic Fluorescence Spectrometry

YAO Yehua， YANG Rong

（Minhang District Agri-Products Quality and Safety Center， Shanghai 201109， China）

Abstract： A fast wet digestion-atomic fluorescence spectrometry method for the determination of total arsenic content in vegetables was developed. The results showed that when arsenic concentration was 0～10 μg·L-1， the linear relationship was good， the correlation coefficient was greater than 0.999， the detection limit was 0.02 μg·L-1， the recoveries were 93.3%～102.4%， and the relative standard deviations were 2.9%～4.5%. The method is simple， reproducible， accurate and reliable.

Keywords： wet fast digestion; atomic fluorescence spectrometry; vegetables; total arsenic

元素砷的毒性较低，而砷的化合物均有剧毒，如在人体内蓄积，可引起砷中毒，轻者表现为皮肤干燥、角质化严重等皮肤损害，重者表现为肾脏、肝脏、神经系统、消化系统等功能的受损[1-3]。（剩余3490字）