期刊
JOURNAL OF CHROMATOGRAPHY A
卷 945, 期 1-2, 页码 257-265出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0021-9673(01)01503-5
关键词
tobacco; sample stacking; plant hormones
Micellar electrokinetic capillary chromatography was developed to analyze plant hormones including gibberellic acid, abscisic acid, indole-3-acetic acid, alpha-naphthaleneacetic acid, 2,4-dichlorophenoxyacetic acid, kinetin-6-furfurylaminopurine and N-6-benzyladenine. The influences of some crucial parameters including buffer concentration, pH value. micelle concentration and applied voltage on electrophoretic separation were investigated. Under optimum conditions (50 mM borate as the running buffer containing 50 mM sodium dodecylsulfate, pH 8.0; separation voltage: -15 kV; injection: hydrodynamic injection, 5 s at 50 mbar; temperature: 25 degreesC), a complete separation of seven plant hormones was accomplished within 30 min. Emphasis was placed on improving detection sensitivity in order to detect small amounts of hormones in plant tissue. Multiple wavelength detection and expanded bubble cell capillary were used with enrichment factors of 2 and 3, respectively. In addition, an on-line concentration method of large volume sample stacking was designed. Enrichment factors of up to similar to10-600 were achieved for these hormones with detection limits down to 0.306 ng/ml. The method was successfully applied to analyzing abscisic acid in flowers of transgenic tobacco. (C) 2002 Elsevier Science B.V, All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据