超高效液相色谱-串联质谱同时测定茶叶中高氯酸盐和氯酸盐

Abstract

Abstract: A method using ultra high performance liquid chromatography-tandem mass spectrometry was developed for the determination of perchlorate and chlorate in tea. Tea extracts were purified by ProElut C₁₈, separated by Click Xion column. The mobile phases were 5βmmol·L^-1 ammonium formate/water (A) and methanol: 5βmmol·L^-1 ammonium formate/water =9︰1 (B). The pH was adjusted to 3.2 by formic acid and the samples were then analyzed by UPLC-MS/MS with multiple reaction monitoring mode (MRM). The method was applied to detect perchlorate and chlorate in tea. The average recovery and relative standard deviations were in the range of 60.5%-85.8% and 4.9%-7.7%, respectively. The detecting limits of perchlorate and chlorate were 3βμg·kg^-1 and 5βμg·kg^-1, respectively. The method is simple, quick and high sensitive, which is suitable for the determination of perchlorate and chlorate in tea.

Key words: ultra high performance liquid chromatography-tandem mass spectrometry, tea, perchlorate, chlorate

CLC Number:

SONG Zhenggui, ZHANG Shufen, ZHOU Ziyan, ZHANG Aizhi, SHEN Jian, FU Xiao, LI Hesheng, XING Jiali, MAN Zhengyin, ZHAO Chunling, CAO Lili. Simultaneous Determination of Perchlorate and Chlorate in Tea by Ultra-peryethylene Liquid Chromatography-tandem Mass Spectrometry[J]. Journal of Tea Science, 2017, 37(6): 597-604.

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Simultaneous Determination of Perchlorate and Chlorate in Tea by Ultra-peryethylene Liquid Chromatography-tandem Mass Spectrometry

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