食品科学 ›› 2001, Vol. 22 ›› Issue (1): 71-73.

• 分析检测 • 上一篇    下一篇

硝酸银-聚乙烯醇-乙醇体系光度法测定海产品中砷

王小燕   

  1.  温州大学化学与环境工程学院
  • 出版日期:2001-01-15 发布日期:2012-02-14

Photometric Determination of Arsenic in Seafood by Silver Nitrate-Polyvinyl Alcohol-Ethanol System

 WANG  Xiao-Yan   

  • Online:2001-01-15 Published:2012-02-14

摘要: 样品用硝酸-硫酸消化后,将砷转变为砷化氢气体,以硝酸银-聚乙烯醇-乙醇体系为吸收液,对微量砷进行光度测定。方法回收率为85.3%~95.7%,RSD为3.7%。方法简便,灵敏度高,所需试剂无毒。应用于产地市售海产品羊栖菜、海带等检测,结果满意。

关键词: 砷, 分光光度计, 海产品, 羊栖菜, 海带

Abstract: After the sample was digested with HNO3-H2SO4,arsenic was converted into gaseous arsenic hydride.The silver nitrate-polyvingyl alcohol-ethanol system was absorbent liquid.Micro arsenic was determined by photometry.The recovery of the method found was 85.3%~93.7% with an average RSD 3.7%.The method offered the advantages of simplicity and sensitivity while the reagents were nontoxic.It has been applied to the analysis of commodity cosmetics with satisfactory results.