欢迎访问《茶叶科学》,今天是

茶叶科学 ›› 2012, Vol. 32 ›› Issue (2): 95-99.doi: 10.13305/j.cnki.jts.2012.02.002

• •    下一篇

离子色谱法测定茶叶中的硝酸盐和亚硝酸盐

蔡荟梅1, 侯如燕1, 高柱2, 彭传燚1, 宛晓春1*   

  1. 1. 安徽农业大学教育部农业部茶叶生物化学与生物技术重点实验室,安徽 合肥 230036;
    2. 国家农副加工食品质量监督检验中心,安徽 合肥 230001
  • 收稿日期:2011-05-09 修回日期:2011-12-08 出版日期:2012-04-15 发布日期:2019-09-05
  • 通讯作者: xcwan@ahau.edu.cn
  • 作者简介:蔡荟梅(1972— ),女,安徽庐江人,副教授,硕士,主要从事茶叶质量安全研究。
  • 基金资助:
    农业部现代农业产业技术体系(农和教发[2008]10号)、安徽省教育厅重点项目(KJ2011A105)

Determination of Nitrate and Nitrite in Tea by Ion Chromatography

CAI Hui-mei1, HOU Ru-yan1, GAO Zhu2, PENG Chuan-yi1, WAN Xiao-chun1*   

  1. 1. Anhui Agricultural University, Key Laboratory of Tea Biochemistry & Biotechnology, Ministry of Education & Ministry of Agriculture, Hefei 230036, China;
    2. China national Center for Quality Supervision and Test of Agricultural-avocation Processed Food, Hefei 230001, China
  • Received:2011-05-09 Revised:2011-12-08 Online:2012-04-15 Published:2019-09-05

摘要: 建立了离子色谱法测定茶叶中硝酸盐和亚硝酸盐的分析方法。样品经超声提取后,用PVPP吸附和固相萃取柱净化的方法进行前处理,经高容量阴离子交换柱分离,抑制型电导检测器检测。结果表明,样品中硝酸盐和亚硝酸盐的回收率范围分别为88.6%~107.5%和89.3%~101.2%。相对标准偏差(RSD)为1.67%和1.13%。离子色谱法测定硝酸根和亚硝酸根具有操作简便、测定快捷、准确性高的优点。

关键词: 离子色谱法, 茶叶, 硝酸盐, 亚硝酸盐

Abstract: A method for simultaneous determination of nitrite and nitrate in tea was established. Tea samples were pre-treated by ultrasonic extraction, PVPP and solid-phase extraction cartridge clean up, and the resulting supernatants were injected into a high-capacity anion exchange column with suppressed conductivity detection. The results showed that the recovery nitrate was 88.6%~107.5% and nitrite was 89.3%~101.2%. The relative standard deviations (RSD) were 1.67% and 1.13% respectively. It was concluded that the advantages of the method are simple operation, fast and high accuracy.

Key words: ion chromatography, tea, nitrate, nitrite

中图分类号: