阳离子交换树脂分离-氢化物发生原子荧光光谱法测定食品中无机砷
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)(2009)
Abstract
提出了以阳离子交换树脂分离无机砷与一甲基胂和二甲基胂,用氢化物发生-原子荧光光谱法测定食品中无机砷含量。对阳离子交换柱的制备,洗脱液的pH值和流速,共存离子的干扰等分析条件做了试验并予以优化。方法的检出限(3s/k)为0.76μg·L~(-1),相对标准偏差(n=12)为1.8%。该方法应用于黄瓜样品中无机砷含量的测定,加标回收率在96.3%~98.2%之间。
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Key words
HG-AFS,Cation exchange resin,Inorganic arsenic
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