食品科学2017，Vol.38Issue(20)：322-326,5.DOI:10.7506/spkx1002-6630-201720048
电膜萃取-光度法测定食品中的砷
Electromembrane Extraction and Spectrophotometric Determination of Arsenic in Food Samples
摘要
Abstract
In this study,electro-membrane extraction was used as a highly efficient sample pre-treatment method for the UV-VIS spectrophotometric determination of arsenic (As) in food samples.The influences of experimental parameters were investigated and optimized as follows:organic solvent,1-octanol containing 2.5 ％ (V/V) disononyl phthalate;applied voltage,70 V;extraction time,15 min;pH of acceptor,13,and stirring rate,700 r/min.The limit of detection (LOD) of this method was 1.5 μg/L.Average recovery rates for different matrices spiked with As were 96％-104％.The precision,expressed as relative standard deviation (RSD),was 0.1％-3.6％.The method presented in this study exhibited a good selectivity,low cost and simplicity and was applicable to total As in food samples.关键词
电膜萃取/紫外-可见分光光度法/钼蓝络合物/食品/砷Key words
electromembrane extraction/UV-VIS spectrophotometric/molybdenum blue complex/food/arsenic分类
轻工纺织引用本文复制引用
吴航,姜效军,吕琳琳,艾天..电膜萃取-光度法测定食品中的砷[J].食品科学,2017,38(20):322-326,5.基金项目
辽宁鞍山市高端人才培养计划项目(20153743) （20153743）
