摘要
建立了面制食品中铝残留量的石墨炉原子吸收测定方法。通过干法灰化样品,筛选最佳石墨炉原子吸收分析条件,并对面制食品中铝进行测定。结果显示,该法在质量浓度20～50μg/L内呈线性关系,相关系数R=0.9998,回收率96.4%～98.5%,RSD为1.46%～3.32%;定量限下限7.35μg/L,最低检出质量浓度3.50μg/L。该方法结果符合要求,操作简便、快速、准确、干扰小、检出限低,适用于面制食品中铝含量的测定。
The method is investigated to measure the aluminum in the flour products.With dry ashing the samples,aluminum is determined by graphite furnace atomic absorption spectrometry.The results show that the linear range is between 20 and 50 μg/L with R=0.999 8,RSD of 1.46% to 3.32%,and recovery rate of 96.4% to 98.5%.The limit of determination is 7.35 μg/L and the minimum detectable concentration is 3.50 μg/L.The results are consistent with the present national standard.This method is a quick and convenient technology for the measurement of aluminum in flour products.
出处
《农产品加工（下）》
2011年第3期71-73,共3页
Farm Products Processing
关键词
石墨炉原子吸收法
干法灰化
面制食品
铝
graphite furnace atomic absorption spectrometry
dry ashing
flour products
aluminum
