| 离子色谱法测定茶叶中的硝酸盐和亚硝酸盐 |
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| 引用本文： | 蔡荟梅,侯如燕,高柱,彭传燚,宛晓春.离子色谱法测定茶叶中的硝酸盐和亚硝酸盐[J].茶叶科学,2012,32(2):95-99. |
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| 作者姓名： | 蔡荟梅 侯如燕 高柱 彭传燚 宛晓春 |
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| 作者单位： | 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 |
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| 基金项目： | 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) |
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| 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。
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| 关 键 词： | 离子色谱法 茶叶 硝酸盐 亚硝酸盐 |
| 收稿时间： | 2011-05-09 |
Determination of Nitrate and Nitrite in Tea by Ion Chromatography |
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| CAI Hui-mei
,
HOU Ru-yan
,
GAO Zhu
,
PENG Chuan-yi
,
WAN Xiao-chun.Determination of Nitrate and Nitrite in Tea by Ion Chromatography[J].Journal of Tea Science,2012,32(2):95-99. |
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| Authors: | CAI Hui-mei HOU Ru-yan GAO Zhu PENG Chuan-yi WAN Xiao-chun |
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| Institution: | 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 |
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| 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. |
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| Keywords: | ion chromatography tea nitrate nitrite |
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