Analysis of ephedra-alkaloids using sweeping and cation-selective exhaustive injection and sweeping micellar electrokinetic chromatography methods
✍ Scribed by Hui-Yu Chiang; Shuenn-Jyi Sheu
- Publisher
- John Wiley and Sons
- Year
- 2004
- Tongue
- English
- Weight
- 105 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0173-0835
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## Abstract In this study, we described a high‐sensitive on‐line preconcentration method for cypromazine (CYP) and melamine (MEL) analysis using cation‐selective exhaustive injection (CSEI) combined with sweeping‐MEKC. The optimum conditions of on‐line concentration and separation were discussed. T
## Abstract We have employed a high‐sensitivity on‐line preconcentration method, cation‐selective exhaustive injection (CSEI) and sweeping MEKC, for the analysis of cocaine, benzoylecgonine, norcocaine, and cocaethylene. We monitored the effects of several of the CSEI‐sweeping‐MEKC parameters – inc