共查询到16条相似文献,搜索用时 93 毫秒
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目的全柱成像毛细管等电聚焦电泳(whole column imaging detection-capillary isoelectric focusing electrophoresis,WCID-CIEF)及毛细管区带电泳法(capillary zone electrophoresis,CZE)检测分析重组人促红素(recombinant human erythropoietin,rhEPO)异构体含量。方法 5批rhEPO原液同时经WCID-CIEF法(采用4 mol/L尿素,0. 35%甲基纤维素,4%两性电解质混合溶液作为样品缓冲液,聚焦电压为3 k V,预聚焦时间1 min,聚焦时间7 min,成像波长280 nm)及CZE法(采用0. 01 mol/L NaCl、tricine、NaAC和7 mol/L Urea及2. 5 mmol/L腐胺混合溶液作为电泳缓冲液,pH 5. 55,进样压力3. 45 kPa,进样时间10 s,分离电压15. 4 kV,分离时间80 min,检测波长214 nm)检测分析异构体含量。结果 WCID-CIEF及CZE法测定5批rhEPO原液均有5~8条异构体条带,异构体含量差异无统计学意义(P 0. 05),具有明显的相关性(r为0. 999),各峰面积占比相差总和小于3%。结论虽然WCIDCIEF谱图及CZE谱图的含义略有不同,但两种毛细管电泳方法的分析结果基本相同,均可满足rhEPO异构体的质量控质需求。 相似文献
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配体交换模式适合分离分析手性氨基酸、氨基醇以及α-羟基酸等物质,被广泛地应用于毛细管电泳手性拆分中。文章以不同种类的手性配体(氨基酸类配体、氨基酰胺类配体、离子液体类配体以及其他种类配体)为出发点,对配体交换毛细管电泳在手性拆分领域中的研究进展作一综述。 相似文献
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论述了毛细管电泳法的优点及在分离等众多领域的应用前景。阐述了毛细管电泳技术的分离模式、分离原理、联用技术及涂层技术。着重介绍了毛细管电泳介孔材料涂层技术的原理及应用,如涂层技术在毛细管电泳法分析过程中的研究及发展,在药物拆分、环境监测、临床检测等领域应用等。 相似文献
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非环化糖类手性选择剂是一种新型的手性选择剂,能对一些难以用环糊精类化合物分离的手性药物对映体进行分离,本文以非环化糖类中的可溶性淀粉作为手性选择剂,探讨了其在毛细管电泳手性药物分离中的优化条件。 相似文献
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A fast and simple analytical procedure, based on capillary zone electrophoresis (CZE), for separation of underivatized low molecular weight lignin-derived sulphonates has been developed. Optimal CZE-operatipn conditions for the separation and detection of several lignin-derived sulphonic acids was found when using a low pH (pH 1.7) phosphate buffer system, an applied voltage of 20 kV and UV-detection at the anode-side. At these conditions the electroosmotic flow is negligible and the analytes are transported through the capillary column by electromigration. The sulphonation and subsequent degradation of the lignin-model compound 1-(4-hydroxy-3-methoxyphenyl)-2-O-(2-methoxyphenyl)-glycerol has been studied by CZE-analysis of aliquots taken from a sulphite reaction mixture No sample pretreatment was needed before analyzing the sulphite reaction mixture with CZE. The method has also been found to be useful for detection of sulphonic acids in samples from sulphite cooking. Crude extracts of a sulphite cooking liquor could be directly analysed by using the technique developed. Based on migration time data and comparison with an authentic sample, 1-(4-hydroxy-3-meth6xyphenyl)-prop-2-ene-1-sulphonate was identified as one of the sulphonic acids present in the sulphite cooking liquor. 相似文献
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Stuart A. Oehrle 《Propellants, Explosives, Pyrotechnics》1997,22(1):1-3
Recently a new explosive, 3-Nitro-1,2,4-triazole-5-one (NTO) has attracted interest as possible replacements for or inclusion in various military propellants and explosives. Analysis of NTO compounds as well as 14 other nitramine and nitroaromatic explosives could be accomplished by capillary electrophoresis using a technique known as MECC, micellar electrokinetic capillary chromatography. A borate/boric acid buffer with sodium dodecylsulfate (SDS) was used in conjunction with direct UV detection at 185 nm. 相似文献