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Enantiomeric Separation of Triazole Fungicides with 3-μM and 5-μMl Particle Chiral Columns by Reverse-phase High-performance Liquid Chromatography by Jing Qiu; Shouhui Dai; Chuangmu Zheng; Shuming Yang; Tingting Chai; Mei Bie is a Chemistry article available to read on EtoBox.
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## Abstract This study used chiral columns packed with 3‐μm and 5‐μm particles to comparatively separate enantiomers of 9 triazole fungicides, and Lux Cellulose‐1 columns with chiral stationary phase of cellulose‐__tris__‐(3,5‐dimethylphenylcarbamate) were used on reverse‐phase high‐performance liquid chromatography with flow rates of 0.3 and 1.0 mL min^−1^ for 3‐μm and 5‐μm columns, respectively. The (+)‐enantiomers of hexaconazole **(****1****)**, tetraconazole **(****4****)**, myclobutanil **(****7****)**, fenbuconazole **(****8****)** and the (−)‐enantiomers of flutriafol **(****2****)** diniconazole **(****3****)**, epoxiconazole **(****5****)**, penconazole **(****6****)**, triadimefon **(****9****)** were firstly eluted from both columns, the elution orders identified with an optical rotation detector didn't change with variety of column particles and mobile phases (acetronitrile/water and methanol/water). The plots of natural logarithms of the selectivity factors (ln α) for all fungicides except penconazole **(****6****)** versus the inverse of temperature (1/__T__) were linear in range of 5–40°C. The thermodynamic parameters (Δ__H__°, Δ__S__°, ΔΔ__H__° and ΔΔ__S__°) were c
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- Author
- Jing Qiu; Shouhui Dai; Chuangmu Zheng; Shuming Yang; Tingting Chai; Mei Bie
- Publisher
- John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0899-0042)
- Published
- 2011
- Language
- EN
- Field
- Chemistry (Physical Sciences)