海产品中无机砷的巯基棉分离—Ag-DDC测定法  

A Method of Mercapto Cotton/Ag-DDC Determination for Inorganic Arsenic in Seafood

作　　者：田永碧[1] 李排兵[1] 王光建[1] 

机构地区：[1]华西医科大学卫生检测教研室

出　　处：《华西医科大学学报》1992年第2期191-197,共7页Journal of West China University of Medical Sciences

摘　　要：本文报道海产品中无机砷的巯基棉分离-二乙氨基二硫代甲酸银比色测定法。采用本法,用1.0～5.0μgAs、海带和虾皮进行精密度试验,其变异系数分别为5.6%～1.5%,4.4%和9.5%,用海带和虾皮分别做两个水平的加标回收试验,其回收率分别为82.0%～102.6%,83.0%～97.1%。对海带、虾皮等10种样品用本法和萃取法(国家标准方法)进行无机砷含量测定对比试验,结果表明两者间无显著性差异,且本法较萃取法操作简便,费用低廉,易于普及与推广。A method of mercapto cotton/Ag-DDC determination for inorganic arsenicin seafood was developed. It is reliable andsimple-The coefficients of variation for1. 0-5. 0μg As(Ⅲ), kelp and dried small shrimpsamples are 1.5-5.6%, 4.4% and 9.5%.respectively. The recoveries of kelp anddried small shrimp samples are 82.0-102.6%and 83.0-97.1%, respectively. As comparedwith the results of the extraction method(Government standard) in the determina-tion of inorganic arsenic levels in 10 kindsof seafood. the results of this simple me-thod showed no significant difference.

关 键 词：海产品 巯基棉 无机砷 分离 

分 类 号：TS254.7[轻工技术与工程—水产品加工及贮藏工程]