期刊论文

Shizhong Chen

英文

Journal of Food Composition and Analysis

0889-1575

2023

117

104967

10.1016/j.jfca.2022.104967

CRediT authorship contribution statement Shizhong Chen: Investigation, Supervision, Methodology, Conceptualization, Writing – original draft, Writing – review & editing. Juntao Yan: acquisition, Validation, Methodology, Investigation, Formal analysis. Chunlei Wang: acquisition, Investigation, Formal analysis and Methodology. Chenghao Zhang: Methodology. Dengbo Lu: Data curation, Software and Visualization.

本校为第一机构

In this study, a new procedure of two-step direct immersion single-drop microextraction (TS-DI-SDME) was firstly developed for the sequential separation and enrichment of Tl(III) and Tl(I) before graphite furnace atomic absorption spectrometry detection. At pH 6.0, Tl(III) selectively reacts with 1-(2-Pyridylazo)− 2-naphthol to form the complexes which can be extracted into one organic drop, while Tl(I) remained in the solution. Then, another organic drop containing dicyclohexano-18-crown-6 was immersed in the sample solution after the extract...