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采用 ＨＮＯ３－ＨＣＩＯ４消化样品，黄原脂棉富集火焰原子吸收法测定米酒中微量铅．试验表明，ｐＨ为 ２～７时，黄原脂棉能定量地富集米酒中的铅，以ＮＮＯ３（１＋９９）５ｍｌ，沸水浴１５ｍｉｎ即可定量解脱，结果令人满意．铅的回收率为９７．９％～１０４．８％，相对标准偏差为５．３％．
Determination of Trace Lead in Rice Wine by Flame Atomic Absorption Spectrometry with HNO3-HCIO4 Digestion Samples. The results showed that when the pH was 2 ~ 7, the yellow cotton liquefied cotton could be quantitatively enriched in lead in rice wine, with 5ml NNO3 (1 + 99) 5ml, boiling water bath for 15min to release quantitatively, the result was satisfactory. The recoveries of lead ranged from 97.9% to 104.8% with a relative standard deviation of 5.3%.