Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7612817 | Journal of Chromatography A | 2014 | 6 Pages |
Abstract
A novel method coupling molecular imprinting solid-phase extraction (MISPE) and micellar electrokinetic capillary chromatography (MEKC) was developed to enable the hourly determination of low level of ambient carbonyls, and study their partition between gaseous phase and particulate phase. With 2,4-dinitroaniline (DNAN) as dummy imprinting template, the unreacted 2,4-Dinitrophenylhydrazine (DNPH) in sampling solution could be removed effectively using MISPE, and an average recovery of 97 ± 5.3% (n = 5) for the carbonyl-DNPH derivatives was achieved. Owing to the high enrichment due to sample clean-up, and the improvement of MEKC separation efficiency, many low abundant carbonyls could be detected by hourly in the field study.
Related Topics
Physical Sciences and Engineering
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Analytical Chemistry
Authors
Hui Sun, Jia-Ping Lai, Ying Sing Fung,