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Determination of agmatine in biological samples by c
发布:北京华阳利民仪器有限公司浏览次数:594A capillary electrophoresis (CE)/optical fiber light-emitting diode (LED)-induced fluorescence detection method is developed for the determination of agmatine in biological samples. The agmatine was precolumn-derivatized with fluorescence tagging reagent, fluorescein isothiocyanate (FITC). Optimal separation and determination for agmatine were obtained with an electrophoretic buffer of 20mM sodium borate (pH 9.2). Under the optimal conditions, the determination of agmatine was achieved in less than 4 min, and the detection limit was 4.1×10−9M (S/N = 3). The relative standard deviation (RSD) for 11 parallel determination of agmatine was less than 3.0%. The present CELED induced fluorescence detection method has been applied to detect agmatine in rat brain tissue, rat stomach tissue, human serum, and human urine. The level of agmatine in human urine was quantified by CE for the first time and found to be in the range 2.54.1×10−7 M. GX毛细管电泳仪(紫外检测)CL1020
2007-06-21上一篇:Detection of paracetamol by capillary electrophoresi
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