DICP OpenIR
High-efficiency on-line concentration technique of capillary electrochromatography
Zhang, YK; Zhu, J; Zhang, LH; Zhang, WB
Source PublicationANALYTICAL CHEMISTRY
2000-11-15
DOI10.1021/ac000397p
Volume72Issue:22Pages:5744-5747
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Analytical
WOS Research AreaChemistry
WOS KeywordPERFORMANCE LIQUID-CHROMATOGRAPHY ; ZONE ELECTROPHORESIS ; REVERSED-PHASE ; BEHAVIOR ; FLOW ; CELL
AbstractWith the coexistence of the mobile phase, the stationary phase,and the electric field in capillary electrochromatography, the chromatographic zone-sharpening effect and field-enhanced sample-stacking technique were utilized to improve detection sensitivity. By the former means, with less organic modifier in the sample solution compared-to-that in the mobile phase, the concentration factors of neutral solutes benzoin and mephenytion were 134 and 219, respectively. Through the latter one, without electrolyte in the sample solution, the detection sensitivity of propatenene with positive charge was improved by 1600 times. While with the combination of these two methods, improvement of over 17 000 times for the sensitivity of propatenene was obtained. By the combined means, the analysis of basic pharmaceutical compounds at concentrations of nanograms per milliliter by UV detection was realized. In addition, parameters that might affect the efficiency of on-line concentration were studied and equations that described the on-line concentration procedure were deduced.
Language英语
WOS IDWOS:000165346800033
Citation statistics
Cited Times:46[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/138801
Collection中国科学院大连化学物理研究所
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, Natl Chromatog R&D Ctr, Dalian 116011, Peoples R China
Recommended Citation
GB/T 7714
Zhang, YK,Zhu, J,Zhang, LH,et al. High-efficiency on-line concentration technique of capillary electrochromatography[J]. ANALYTICAL CHEMISTRY,2000,72(22):5744-5747.
APA Zhang, YK,Zhu, J,Zhang, LH,&Zhang, WB.(2000).High-efficiency on-line concentration technique of capillary electrochromatography.ANALYTICAL CHEMISTRY,72(22),5744-5747.
MLA Zhang, YK,et al."High-efficiency on-line concentration technique of capillary electrochromatography".ANALYTICAL CHEMISTRY 72.22(2000):5744-5747.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhang, YK]'s Articles
[Zhu, J]'s Articles
[Zhang, LH]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhang, YK]'s Articles
[Zhu, J]'s Articles
[Zhang, LH]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhang, YK]'s Articles
[Zhu, J]'s Articles
[Zhang, LH]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.