食品科学 ›› 2008, Vol. 29 ›› Issue (6): 368-371.

• 分析检测 • 上一篇    下一篇

蔬菜中砷、铅、汞、镉快速检测的方法研究

 邓泽英, 李京晶   

  1. 北京市产品质量监督检验所; 北京市产品质量监督检验所 北京100071; 北京100071;
  • 出版日期:2008-06-15 发布日期:2011-08-26

Rapid Assay Method for Arsenic,Lead,Mercury and Cadmium Elements in Vegetable

 DENG  Ze-Ying, LI  Jing-Jing   

  1. Beijing Products Quality Supervision and Inspection Institute, Beijing 100071, China
  • Online:2008-06-15 Published:2011-08-26

摘要: 本实验探讨了蔬菜样品经一次消解后,对其中砷、铅、汞、镉进行分次测量的快速检测方法,同时对消化温度和消化液残存量对测定结果的影响进行了研究。结果表明:120.0℃是四种元素均无消化损失的最高温度;消化液残存量在0.50~1.50ml之间时(定容10.00ml);四种元素均能得到较好地回收(96.7%~103.3%);该方法最小检出限分别为砷0.002mg/L、铅0.005mg/L、汞0.0002mg/L、镉0.0002mg/L,RSD均小于5.4%。

关键词: 蔬菜, 砷, 铅, 汞, 镉, 分析方法

Abstract: A quick analytical method for determining arsenic, lead, mercury and cadmium element in vegetable through only one digestion process was discussed, and the effects of the temperature and remained solution of digestion were investigated too. The result showed that 120.0 ℃ is the highest temperature that four elements can not be damnified during wetted digestion. When remained solution of digestion is between 0.50~1.50 ml (volume of sample 10.00 ml), ideal recoveries (96.7%~103.3%) can be obtained. The limits of detection are 0.002 mg/L (As), 0.005 mg/L (Pb), 0.0002 mg/L (Hg) and 0.0002 mg/L (Cd), and the RSDs are all less than 5.4%.

Key words: vegetable, lead, cadmium, mercury, arsenic, analytical method