摘要
为测定酒中的痕量铅建立了痕量铅的断续流动氢化物发生-原子荧光光谱测定方法.采用酸洗活性碳脱铅处理K3Fe(CN)6,使空白值大大下降,改善了方法检出限.对K3Fe(CN)6-KBH4-HCl铅烷发生体系的条件、共存元素的干扰进行了研究,并分别测定了白酒、葡萄酒、啤酒等样品中的痕量铅,加标回收率为98.6%～102.8%,RSD值(n=6)为0.2%～2.9%,方法检出限为0.12 μg/L.本法准确、灵敏、简便,完全符合痕量分析要求.
A method for determination of trace lead in wine by intermittent flow HG-AFS was founded. The detection limit was effectively improved by treating K3Fe （CN）6 with activated carbon. The conditions for K3Fe （CN）6 ＋ KBH4 ＋ HCl system of generation of PbH4 and the interference of foreign ions were discussed. The detection limit of this method was 0.12μg/L and it＇s RSD （ n = 6） was in the range of 0.2% to 2.9%. The recovery was 98.6% - 102.8%. This method is accurate, simple and sensitive. It is accorded with the demand of trace element analysis.
出处
《中国食品卫生杂志》
2005年第5期425-427,共3页
Chinese Journal of Food Hygiene
关键词
铅
原子荧光光谱法
氢化作用
酒精性饮料
Lead
Spectrometry, Fluorescence
Hydrogenation
Alcoholic Beverages
