共查询到19条相似文献,搜索用时 171 毫秒
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简单介绍了毛细管电泳在医药领域中的应用,包括药物分析、中药成分分析、手性对映体分离分析和临床化学、法医及单细胞分析等。药物分析中包括主药成分分析、相关杂质检测、药物计量离子配比测定和定量分析等。中药成分分析中包括各类药效成分、中药材中主要成分及中药复方制剂成分分析。手性对映体分离中包括机理研究、新型手性选择剂。临床化学中包括临床疾病诊断、临床蛋白分析、临床药物监测、药物代谢研究和分子生物学测定。法庭科学中包括毒物分析、枪击残余物分析、炸药分析、笔迹墨水分析。单细胞分析中包括神经细胞分析、红细胞分析和胚胎细胞分析。 相似文献
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近年来,毛细管电泳(CE) 手性分离方法的研究主要集中在各种手性添加剂与对映体药物的匹配及实验条件的最优化选择上.目前,较为成熟的CE分离模式有:区带电泳(CZE)、凝胶电泳(CGE)、等速电泳(CITP)、胶束电动色谱(MEKC)和非水电泳(NACE)等,并已成功地用于手性化合物对映体的分离.CE手性分离研究正朝着新型手性选择剂的研制和实现与其他各种定性分析仪器及其他色谱分离模式的联用方向发展. 相似文献
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气相色谱手性固定相进展 总被引:2,自引:0,他引:2
1966年Gil-Av等人首次用手性固定相在毛细管柱上分离了氨基酸对映体。至今这种方法已发展为研究和分离对映体的一种重要技术,并愈来愈多地用于天然产物绝对构象(外激素、香料成分等)的测定,不对称选择合成中对映体纯度及过剩量测定,手性药物中对映体纯度的测定,手性化合物在化学转移机理等方面的研究。目前气相色谱中用于分离对映体的 相似文献
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采用毛细管电泳(CE)手性分离方法对8种不同取代基的芳香醇对映体样品的光学纯度进行分析。通过对手性选择剂β-CD-NH3Cl的浓度、背景电解质的浓度、pH值及操作电压等影响因素的研究,优化了分离条件,成功地对8种芳香醇对映体样品进行了手性拆分;同时,对8种对映体样品进行了光学纯度检查,并与HPLC测定结果进行比较。结果表明,3批样品中对映体过量(e.e.%)测定值与HPLC法的测定结果相一致。该方法简单、准确,可用于该8种不同取代基芳香醇的手性拆分和e.e.%值的测定。 相似文献
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药物分析是毛细管电泳(CE)的重要应用领域,所有CE分离模式与检测方法都在各种药物及其不同形式样品的分离分析中显示出特色和应用能力。该文从药品分析领域中的小分子药物(包括手性药物)及其有关物质、中药与天然产物、体内药物分析、生物制品药物分析等几个方面,综述了近几年CE在这些传统药物分析领域应用的研究进展。限于篇幅,未包括现代药物分析研究比较活跃的理化常数测定、亲和毛细管电泳与结合常数研究(药物与受体间的相互作用等)、临床生物标志物分析、代谢组学和微流控芯片CE分析等方面的内容。根据目前传统药物分析领域的发展,该文关注到近期CE在顺应药物分析的法规需求、电容耦合非接触电导检测(CE-C4 D)、改进检测灵敏度与精密度、CE-十二烷基硫酸钠(SDS)毛细管电泳、全柱成像毛细管等电聚焦(icIEF)、抗体分析等方面的新进展。该文结合文献,讨论了目前传统药物分析领域的需求,以及CE在其中的地位、挑战和机遇。对目前CE主要作为互补分析方法在化学药和中药分析中的应用研究提出了一些针对性的建议,期待CE在生物制品分析中的特色和能力得到进一步的发挥,同时提出CE-MS和对CE分析重复性改进等新进展可能对未来CE应用领域的大幅度扩展。该综述主要涉及近3年(2017年1月到2020年2月)及部分2016年的相关文献。 相似文献
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A decade of capillary electrophoresis 总被引:2,自引:0,他引:2
Issaq HJ 《Electrophoresis》2000,21(10):1921-1939
Since the introduction of the first commercial capillary electrophoresis (CE) instrument a decade ago, CE applications have become widespread. Today, CE is a versatile analytical technique which is successfully used for the separation of small ions, neutral molecules, and large biomolecules and for the study of physicochemical parameters. It is being utilized in widely different fields, such as analytical chemistry, forensic chemistry, clinical chemistry, organic chemistry, natural products, pharmaceutical industry, chiral separations, molecular biology, and others. It is not only used as a separation technique but to answer physicochemical questions. In this review, we will discuss different modes of CE such as capillary zone electrophoresis, micellar electrokinetic chromatography, capillary gel electrophoresis, capillary isoelectric focusing, and capillary electrochromatography, and will comment on the future direction of CE, including array capillary electrophoresis and array microchip separations. 相似文献
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Rocheleau MJ 《Electrophoresis》2005,26(12):2320-2329
Generic capillary electrophoresis (CE) conditions have been implemented for chiral separations in early pharmaceutical development. The chiral CE separations of several pharmaceutical samples at different stages of development, i.e., discovery, process chemistry, and investigative new drug application, have been obtained using sulfated beta-cyclodextrin (CD). Several sulfated beta-CDs have been screened to select an appropriate enantioselective agent. The use of a generic CE method allows for a convenient and rapid chiral recognition of different weak bases, with minimal or no method development. CE using sulfated beta-CD for the chiral separation of N-benzoyl methyl piperazine has been validated for linearity, precision, accuracy, limits of detection and quantitation (LOD, LOQ). Although less sensitive than a specific liquid chromatography method using a Chiralpak AD column, the overall performance of the chiral CE method was found comparable. Validation data demonstrate that a LOD of 0.1%, sufficient to fulfill regulatory requirements, is achievable by chiral CE. 相似文献
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Leena Suntornsuk 《Analytical and bioanalytical chemistry》2010,398(1):29-52
This review covers recent advances of capillary electrophoresis (CE) in pharmaceutical analysis. The principle, instrumentation,
and conventional modes of CE are briefly discussed. Advances in the different CE techniques (non-aqueous CE, microemulsion
electrokinetic chromatography, capillary isotachophoresis, capillary electrochromatography, and immunoaffinity CE), detection
techniques (mass spectrometry, light-emitting diode, fluorescence, chemiluminescence, and contactless conductivity), on-line
sample pretreatment (flow injection) and chiral separation are described. Applications of CE to assay of active pharmaceutical
ingredients (APIs), drug impurity testing, chiral drug separation, and determination of APIs in biological fluids published
from 2008 to 2009 are tabulated. 相似文献
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Capillary electrophoresis (CE) is becoming an established method for the determination of chiral trace impurities. This paper provides an overview of the state of the art of CE for such determinations. Detection limits of 0.1% impurity is widely accepted as a minimum requirement for chiral trace impurity determinations. This can be relatively easily achieved with CE. However, determination of lower concentrations requires careful optimization of the separation system. Four factors that are of particular significance for trace enantiomeric determinations: resolution, limit of detection, linear range and type of detection, are discussed. Further, the advantages and disadvantages of derivatization in this context are treated as well as the separation approach, ie., direct chiral separation or separation after the formation of diastereomers. It is concluded that the limit of impurity detection can be about 0.05% when UV detection is employed. Using laser-induced fluorescence detection, a quantitative determination at the 0.005% level is often possible. 相似文献
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Capillary electrophoresis (CE), using highly-sulfated cyclodextrins as chiral selectors, has been applied to determine the chiral purity of pharmaceutical compounds. A chiral separation strategy, developed earlier for racaemic mixtures, was applied on four basic drugs (propranolol, atenolol, chlorpheniramine and tryptophan methylester). The aim was to develop validated separation methods which allow determination of 0.1% impurity levels of the unwanted enantiomers (distomer) in the presence of 99.9% of the active compound (eutomer). The linearity, quantification limits for the trace enantiomers and the precision of the measurements were determined. In a second part, impurity separations have been simulated in order to evaluate the required resolution when assaying impurities. It is shown that a baseline resolution of 1.5, generally accepted for racaemic mixtures, does not always allow good impurity determinations. Two alternative methods to solve this problem have been proposed. 相似文献
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Ana M. García-Campaa Francisco J. Lara Laura Gmiz-Gracia Jos F. Huertas-Prez 《Trends in analytical chemistry : TRAC》2009,28(8):973-986
In recent years, chemiluminescence (CL)-based detection coupled to capillary electrophoresis (CE) as separation technique has attracted much interest due to new advances in home-made configurations, sample-treatment techniques for application to real matrixes, development of a commercial instrument and use of miniaturization techniques to obtain micro total analysis systems incorporating CE separation and CL detection in microchips. We present some developments, key strategies and selected analytical applications of CE-CL since the year 2000 in diverse fields (e.g., clinical and pharmaceutical, environmental or food analysis). 相似文献