NDLI: Development and Evaluation of Quantitative Capillary Electrophoresis with a 4-nL Internal Loop Injector

Content Provider	Springer Nature Link
Author	Ling, Bangzan Xu, Yuan Yao, Dong Zhang, Lin Wang, Yan Yan, Chao
Copyright Year	2015
Abstract	A quantitative capillary electrophoresis (qCE) apparatus has been developed and evaluated in order to improve the accuracy and precision of the currently commercially available CE. A four-port nano-valve with a 4-nL internal loop is employed in the apparatus to precisely inject the amount of sample. A micro-fluidic device based on a syringe pump provides a stable and mild flow to ensure the stability and reliability of the instrument. The separation capillary has an inner diameter of 50 µm i.d. and 40-cm effective length. Run-to-run reproducibility in terms of the relative standard deviation lower than 1 % for the peak area and 0.5 % for retention time were respectively achieved using a test sample of dimethylsulfoxide. Six synthetic adulterants, namely fenfluramine, sibutramine, pseudoephedrine, amfebutamone, clenbuterol and norepinephrine, were used to test the feasibility of the qCE system under the following experimental condition: an electrolyte containing 20 mM NaH2PO4/H3PO4 at pH 2.0 with a thermostat temperature of 15 °C and voltage at 15 kV.
Starting Page	543
Ending Page	550
Page Count	8
File Format	PDF
ISSN	00095893
Journal	Chromatographia
Volume Number	78
Issue Number	7-8
e-ISSN	16121112
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-02-04
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Quantitative capillary electrophoresis Nanoliter injector Electric decoupler Adulterant Chromatography Proteomics Pharmacy Laboratory Medicine
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Analytical Chemistry Biochemistry Clinical Biochemistry

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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