影响石墨炉原子吸收光谱法测定食品中铅的因素及控制措施

摘 要：本文主要依据GB 5009.12—2017中的第一法石墨炉原子吸收光谱法测定食品中的铅的含量，从试样制备、样品前处理、试剂及水、器皿及测量环节5个方面，分析影响铅测定结果的因素，并阐述控制措施，旨在提高食品中铅测定的准确性，为相关人员提供技术参考。

关键词：食品;铅;石墨炉原子吸收分光光谱法

Factors Affecting the Determination of Lead in Food by Graphite Furnace Atomic Absorption Spectrometry and Control Measures

ZHAO Jing， TIAN Danyang， LI Xuexue， ZHAO Axuan

（Xianyang Center for Food and Drug Control， Xianyang 712000， China）

Abstract： This paper mainly measures the content of lead in food according to the first method of graphite furnace atomic absorption spectroscopy in GB 5009.12—2017， analyzes the factors affecting the lead measurement results from five aspects of sample preparation， sample pretreatment， reagent， water， utensils and measurement links， and expounds the control measures， aiming to improve the accuracy of lead measurement in food and provide technical reference for relevant personnel.

Keywords： food; Pb; graphite furnace atomic absorption spectrometry

铅是一种多亲和性重金属元素，工业污染、汽车废气等导致铅元素富集在环境中，通过原料循环或在加工过程中污染食品，并随食物链进入人体。（剩余4136字）