期刊论文

Chen, Shizhong

英文

Talanta

0039-9140

2023

255

123902

10.1016/j.talanta.2022.123902

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

本校为第一机构

In this study, for the first time, a novel separation and preconcentration method of direct immersion dual-drop microextraction (DIDDME) was proposed for the species of inorganic chromium (Cr(III) and Cr(VI)) followed by graphite furnace atomic absorption spectrometry detection. The methodology is based on that two organic drops hold on the needle tips of microsyringes were concurrently immersed in a stirred sample solution. Each drop contains a chelating reagent, which can react with a specific species under the same pH value. Therefore, Cr(III) and Cr(VI) can be selectively extracted into di...