原子吸收光谱法测定白酒中铅的预处理方法研究  

Research on Pretreatment Method of Lead Content Mensurate in Liquor by Atomic Absorption Spectrometry

作　　者：孔维兵[1] 陈梦元 陈仁远[1] 

机构地区：[1]贵州省产品质量监督检验院仁怀分院,贵州仁怀564500

出　　处：《酿酒》2017年第1期92-95,共4页Liquor Making

摘　　要：按照食品国标中的石墨炉法测定白酒铅含量时要使用到硝酸和高氯酸做前处理,处理过程中存在铅损失和铅污染的可能,从而影响结果的准确性。建立一种白酒预处理方法,样品经简单处理后就直接进样检测,无须添加混合酸或基体改进剂,且能消除乙醇干扰,方法符合食品安全标准所规定的检测要求,并提高了白酒铅含量检测的安全性和时效性。Heating, nitric acid and perchloric acid are used during the pretreatment process of lead content mensurate in liquor by graphite furnace method in the national food standards, which may lead to lead loss or lead contamination, as a consequence, the accuracy of determination results will also be affected. A new pretreatment method was established in this paper, which can eliminate the interference of ethanol and meet the testing requirements of food safety standards without the addition of matrix modifier or mixed acid and make the determination of lead content in liquor more efficient and safer.

关 键 词：原子吸收 白酒 铅 前处理方法 

分 类 号：TS262.3[轻工技术与工程—发酵工程] TS207.3[轻工技术与工程—食品科学与工程]