原子荧光光谱法同时测定搪瓷、玻璃食具中砷、锑溶出量  

Simultaneous Determination of Arsenic and Antimony Released from Enamel and Glass Cookwares by Atomic Fluorescence Spectrometry

作　　者：刘正华[1] 陈新焕[1] 肖家勇[1] 陈练[1] 吕小园[1] 杨万彪[1] 

机构地区：[1]湖南出入境检验检疫局,湖南长沙410004

出　　处：《食品科学》2012年第24期249-252,共4页Food Science

基　　金：国家认证认可监督管理委员会检验检疫行业标准制订项目(2009B403X)

摘　　要：研究原子荧光光谱法同时测定搪瓷、玻璃食具中砷、锑溶出量的适宜条件,考察酸介质和还原剂用量对测定砷、锑的影响,建立搪瓷、玻璃食具中砷、锑溶出量的原子荧光光谱法同时测定方法。方法灵敏度高、准确度好、操作简便。在选定的实验条件下,砷、锑线性范围为0～80ng/mL,相关系数分别为0.9995和0.9998,检出限分别为0.04ng/mL和0.07ng/mL,回收率分别为94.0%～104.0%和98.0%～106.0%,精密度(RSD)分别为3.6%和2.7%。A sensitive, accurate and simple method for the simultaneous determination of arsenic and antimony released from enamel and glass cookwares were established using atomic fluorescence spectrometry （AFS）. With the aim of finding optimal conditions for the determination of arsenic and antimony, we investigated the effects of acid medium type and reductant dosage on fluorescence intensity. Under optimized conditions, this method showed excellent linear relationship between fluorescence intensity and concentration within the range of 0-80 ng/mL with correlation coefficients of 0.9995 and 0.9998 for arsenic and antimony, respectively. The limits of detection for arsenic and antimony were 0.04 ng/mL and 0.07 ng/mL, respectively. Spike recoveries of arsenic and antimony ranged from 94.0% to 104.0% and from 98.0% to 106.0%, respectively. The precision RSDs for 6 replicate determinations of arsenic and antimony were 3.6% and 2.7%, respectively.

关 键 词：原子荧光光谱法 砷 锑 搪瓷食具 玻璃食具 

分 类 号：TS206[轻工技术与工程—食品科学]