食品科学 ›› 2007, Vol. 28 ›› Issue (7): 407-410.

• 分析检测 • 上一篇    下一篇

小麦中有害元素砷的测定及其生物吸收比的研究

 高向阳, 王翠, 张平安, 张莉莎   

  1. 河南农业大学食品科学技术学院; 河南省职业病防治研究所; 河南农业大学食品科学技术学院 河南郑州450002; 河南郑州450052; 河南郑州450002;
  • 出版日期:2007-07-15 发布日期:2011-10-24

Study on Bio-absorptance and Determination of Harmful Element Arsenic in Wheat

 GAO  Xiang-Yang, WANG  Cui, ZHANG  Ping-An, ZHANG  Li-Sha   

  1. 1.College of Food Science and Technology, Henan Agricultural University, Zhengzhou 450002, China; 2.Henan Institute of Occupational Diseases, Zhengzhou 450052, China
  • Online:2007-07-15 Published:2011-10-24

摘要: 目的:测定小麦中的微量砷,并研究其自然迁移规律和生物吸收比的特性。方法:以河南省安阳县白壁镇郭盆村的土壤和小麦为样品,用氢化物-原子荧光法进行测定。结果:在优化的测定条件下,砷标准曲线的工作范围为0~80μg/L,相关系数r>0.999,检出限为0.07μg/L,仪器测定标准溶液的RSD为1.4%(n=11),加标回收率为91.57%~107.1%,结论:小麦中砷的生物吸收比随土壤中总砷含量的增加而增加,但小于1%。该方法快速、准确,应用于土壤、粮食中砷的检测,获得满意结果。

关键词: 氢化物, 原子荧光, 土壤, 小麦, 砷, 生物吸收比

Abstract: Objective: Detect the content of arsenic in soil and wheat with study on bio-absorptance of arsenic. Methods: Determination of arsenic in samples by atomic fluorescence spectrometry. Results: In the given conditions, the determination range of standard curve of arsenic is 0~80μg/L with r>0.999, while detection limit is 0.07μg/L. The RSD of detect standard solution is 1.4%(n=11). The recovery between 91.57% and 107.1%. Conclusion: The bio-absorptance of arsenic in wheat is increscent with content of total arsenic in soil, but not more than 1%. The method is simple, accuracy and rapid. It has been applied to the determination of arsenic in soil and wheat with satisfactory results.

Key words: hydride, atomic fluorescence spectrometry, soil, wheat, arsenic, bio-absorptance