珍珠岩助滤剂吸附铅测定前处理方法优化  

Optimization of Pretreatment Method for Determination of Lead Adsorption in Perlite Filter Aid

作　　者：罗旗峰 续颖 LUO Qifeng;XU Ying(Guangdong Meiweixian Flavoring Foods Co.,Ltd.,Zhongshan 528437,China)

机构地区：[1]广东美味鲜调味食品有限公司,广东中山528437

出　　处：《食品安全导刊》2022年第25期79-81,共3页China Food Safety Magazine

摘　　要：本文利用石墨炉原子吸收光谱法测定珍珠岩助滤剂的吸附铅含量。样品经盐酸溶液沸腾浸提,再以热水充分洗涤,使用石墨炉原子吸收光谱检测铅含量。方法精密度在1.1%~1.6%,回收率在98.2%~107.6%,检出限为0.015 mg·kg^(-1)。该法能够满足检测需求,可用于珍珠岩助滤剂吸附铅的测定。In this paper,the content of adsorbed lead in perlite filter aid was determined by graphite furnace atomic absorption spectrometry.The samples were boiled and leached with hydrochloric acid solution,and then fully washed with hot water,and the lead content was detected by graphite furnace atomic absorption spectrometry.The precision of the method was in the range of 1.1%~1.6%,the recovery was in the range of 98.2%~107.6%,and the detection limit was 0.015 mg·kg^(-1).This method can meet the detection requirements and can be used for the determination of lead adsorption by perlite filter aids.

关 键 词：石墨炉原子吸收光谱 珍珠岩 助滤剂 铅 

分 类 号：O657.31[理学—分析化学] TS207.3[理学—化学]