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Citation: WANG Xin, HE Jiangang, LUO Qi, LIU Zhen. Automated hyphenation of in-tube boronate affinity solid-phase microextraction with high performance liquid chromatography for the determination of cis-diol compounds in tea beverages[J]. Chinese Journal of Chromatography, ;2020, 38(1): 137-142. doi: 10.3724/SP.J.1123.2019.06020 shu

Automated hyphenation of in-tube boronate affinity solid-phase microextraction with high performance liquid chromatography for the determination of cis-diol compounds in tea beverages

State Key Lab of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China

Corresponding author: LIU Zhen, zhenliu@nju.edu.cn
Received Date: 24 June 2019

Fund Project: General Grant from the National Natural Science Foundation of China (No. 21075063).

Automatic hyphenated analytical techniques hold great promise for reducing labour intensity, enhancing efficiency, and ensuring data reproducibility. In recent decade, Boronate affinity solid phase microextraction (BA-SPME) has emerged as a unique tool for the selective extraction of cis-diol-containing compounds. However, automatic hyphenation of SPME with high performance liquid chromatography (HPLC) has not yet been reported. Herein we report a new automated hyphenation of in-tube BA-SPME with HPLC for the determination of cis-diol compounds in tea beverages. The automated hyphenation was implemented through a flow-switch via the six-way valve of an autosampler. We prepared an in-tube SPME capillary, investigated the loading capacity of the coated column, characterized the morphology of the column, and investigated the factors influencing the separation. Finally, using the automatic hyphenated SPME-HPLC approach, we analyzed the cis-diol-containing compounds in three kinds of commercial tea beverages and investigated the effect of tea-making temperature on the content of the cis-diol-containing compounds in the prepared tea.
- boronate affinity,
- liquid chromatography (LC),
- automated on-line hyphenation,
- solid phase microextraction (SPME),
- cis-diol compounds,
- tea beverage
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