微波消解-石墨炉原子吸收法检测液态乳中镉

Modern Preventive Medicine(2014)

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Abstract
目的 探讨石墨炉原子吸收法检测液态乳中镉的最佳条件.方法 将液态乳预处理和高压微波消解后,采用塞曼校正,石墨炉原子吸收光谱法自动进样测定样品中镉含量.结果 方法线性范围为镉含量0.0~ 10.0 μ/L,回归方程为y=0.038 8x+0.008 4,线性系数0.999 1;检出限0.53μg/L.加标回收率为96.4% ~ 101.7%;RSDs为1.15%~3.90%.结论 本法线性好,回收率高,变异小,操作简单,可用于液态乳中镉含量测定.
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Key words
Graphite furnace atomic absorption spectrometry,Liquid milk,Cadmium
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