数字农科院2.0

Enantiomeric Separation of Triazole Fungicides with 3-mu m and 5-mu m Particle Chiral Columns by Reverse-Phase High-Performance Liquid Chromatography

文献类型： 外文期刊

作者： Qiu, Jing;Dai, Shouhui;Zheng, Chuangmu;Yang, Shuming;Chai, Tingting;Bie, Mei;Chai, Tingting;Bie, Mei

作者机构：

关键词： enantiomeric separation;triazole fungicide;HPLC;CDMPC;elution order

期刊名称： CHIRALITY

ISSN： 0899-0042

年卷期： 2011 年 23 卷 6 期

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收录情况： SCI

摘要： This study used chiral columns packed with 3-mu m and 5-mu m 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-mu m and 5-mu m 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 alpha) for all fungicides except penconazole (6) versus the inverse of temperature (1/T) were linear in range of 5-40 degrees C. The thermodynamic parameters (Delta H degrees, Delta S degrees, Delta Delta H degrees and Delta Delta S degrees) were calculated using Van't Hoff equations to understand the thermosynamic driving forces for enantioseparation. This work will be very helpful to obtain good enantiomeric separation and establish more efficient analytical method for triazole fungicides. Chirality 23:479-486, 2011. (C) 2011 Wiley-Liss, Inc.

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