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| Rapid Determination of Caffeine in Milk Tea by Pseudo Reversed Phase Liquid Chromatography |
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| DOI：10.3969/j.issn.1004-4957.年份.月份 |
| KeyWord:caffeine milk tea rapid determination pseudo reversed phase liquid chromatography |
| Author | Institution |
| 董丽丽，于玲，李敏，王力川 |
邢台学院生物化学系 |
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| Abstract: |
| A rapid and sensitive method of pseudo reversed phase liquid chromatography（pseudo-RPLC） was developed for the analysis of caffeine in milk tea.The samples were separated on a bare silica column coupled with aqueous-rich mobile phase（pH 2.9,0.03 mol?L-1sodium formate-acetonitrile,95∶5）,and tested within 5 min.The calibration curve was linear in the concentration range of 0.2-1 000 mg?L-1 with correlation coefficient of 0.999 5.The recoveries at a spiked level of 20 mg?L-1 ranged from 98% to 103% with RSDs 1.9%-3.6%. |
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