食品科学 ›› 2002, Vol. 23 ›› Issue (2): 98-100.

• 分析检测 • 上一篇    下一篇

微孔滤膜富集-双硫腙四氯化碳一次萃取混色光度法测定锌的研究

 司文会, 朱金坤   

  1. 安徽技术师范学院
  • 出版日期:2002-02-15 发布日期:2012-02-13

Study on Unite -Photometric Method Determination of Zinc with Microfil termembrance concentration Dithizone Carbon Tetrachloride Once -exhaust

 SI  Wen-Hui, ZHU  Jin-Kun   

  • Online:2002-02-15 Published:2012-02-13

摘要: 用HNO3-HClO4混合酸消化样品,微孔滤膜富集双硫腙四氯化碳一次萃取混色光度法测定锌,建立了直接快速光度法测定锌的新方法。其线性范围0~4μg/5ml,Sandell=40.0×10-4μg.cm-2,变异系数3.16%,平均回收率97.7%~103.4%。方法用于食品、粮食、生物材料等实际样品分析,结果满意。

关键词: 双硫腙, 四氯化碳, 一次萃取, 混色光度法, 锌, 微孔滤膜

Abstract: Nitrifying specimens with HNO3-HClO4 ,we found out the content of Zn by use o f micropore -enrich-ment -Dithizone -Carbon tetrachloride -once exhaust -unite -photometr ic -method,which is a new method to analyze Zn content Its linearity ran ge was0~4μg /5ml ,Sandell =40.0×10 -4μg /cm2 ,variability rate3.16%and av-erage recover rate97.7%~103.4%.this direct -quick -photometric me thodcouldbe usedwildly,suchas analysis of food,forage,biomaterial and etc.

Key words: Dithizone , Carbon tetrachloride , Once -exhaust , Unite -photometric -method , Zinc , Microfiltermembrance