高效液相色谱-电感耦合等离子体质谱法测定保健食品类袋泡茶中5种砷形态
作者:
作者单位:

(1.首都医科大学公共卫生学院,北京 100069;2.北京市疾病预防控制中心 食物中毒 诊断溯源技术北京市重点实验室, 北京 100013;3.北京市预防医学研究中心, 北京 100013)

作者简介:

李晓玉 女 硕士生 研究方向为与健康相关的元素分析 E-mail:lxy370921@163.com通信作者:┣┣(中)通信作者┫┫刘丽萍 女 主任技师 研究方向为光谱、质谱E-mail:llp9312@163.com

通讯作者:

中图分类号:

基金项目:


Determination of five arsenic species in the soaking solution of healthy food teabag by high performance liquid chromatography-inductively coupled plasma mass spectrometry
Author:
Affiliation:

(1.School of Public Health, Capital Medical University, Beijing 100069, China;2.Beijing Key Laboratory of Diagnostic and Traceability Technologies for Food Poisoning, Beijing Center for Disease Prevention and Control, Beijing 100013, China;3.Beijing Center for Preventive Medicine Research, Beijing 100013, China)

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    目的 采用高效液相色谱-电感耦合等离子体质谱(HPLC-ICP/MS)联用技术建立保健食品类袋泡茶浸泡液中亚砷酸根、砷酸根、一甲基砷酸(MMA)、二甲基砷酸(DMA)和砷甜菜碱(AsB)5种砷形态的分析方法。方法 样品经热浸提后,采用Dionex IonPac AS19(4 mm×250 mm,10 μm)阴离子交换柱,30 mmol/L碳酸铵(pH=9.5)为流动相等度洗脱,10 min内进行5种砷形态的分析测定。结果 5种砷形态的浓度在0.2~300 μg/L范围内线性良好,相关系数(r)均>0.999,检出限为0.04~0.08 μg/L,采用精密度考察方法重复性,相对标准偏差(RSD)均<5%,加标回收率在80.3%~121.1%之间。结论 本方法适用于保健食品类袋泡茶浸泡液中砷形态的测定,试验表明保健食品类袋泡茶中砷形态主要以As(Ⅲ)和As(Ⅴ)为主,应关注其无机砷的风险性。

    Abstract:

    Objective To establish a method for the determination of 5 arsenic species including arsenite [As (Ⅲ)], arsenate[As (Ⅴ)], monmethyl arsenic (MMA), dimethyl arsenic(DMA) and arsenobetaine (AsB) in the soaking solution of healthy food teabag by high performance liquid chromatography-inductively coupled plasma mass spectrometry method (HPLC-ICP/MS). Methods The samples were extracted by hot extraction. Five arsenic species were separated in 10 min by Dionex IonPac AS19 (4 mm×250 mm, 10 μm) anion exchange column with 30 mmol/L ammonium carbonate (pH=9.5) as the mobile phase for isometric elution. Results The linear ranges for 5 arsenic species were between 0.2-300 μg/L with the linear coefficients more than 0.999, and the detection limits were between 0.04-0.08 μg/L. The repeatability of the method was examined by precision. The relative standard deviation (RSD) for the 5 arsenic species were less than 5% and the recoveries were between 80.3%-121.1%. Conclusion The method was suitable for the analysis and determination of arsenic species in the soaking solution of healthy food teabag. The experiment proved that the main arsenic species in healthy food teabag were As (Ⅲ) and As (Ⅴ). Attention should be paid to the risk of inorganic arsenic.

    参考文献
    相似文献
    引证文献
引用本文

李晓玉,刘丽萍,陈绍占.高效液相色谱-电感耦合等离子体质谱法测定保健食品类袋泡茶中5种砷形态[J].中国食品卫生杂志,2018,30(5):491-496.

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2018-05-15
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2018-09-29
  • 出版日期:
《中国食品卫生杂志》邮寄地址与联系方式变更通知
关闭