Document Detail


Portable capillary electrophoresis instrument with automated injector and contactless conductivity detection.
MedLine Citation:
PMID:  23336596     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
A portable capillary electrophoresis instrument employing contactless conductivity detection was developed. The device features a robust, valve based, injection system, relying on pressurized air for solution delivery and a micro-membrane pump for sample aspiration. The instrument has a compact design, with all components arranged in a briefcase with dimensions of 45 × 35 × 15 cm (w × d × h) and a weight of about 8 kg. It can operate continuously for 9 hours in the battery-powered mode. Depending on the task at hand the system may be optimized for high separation efficiency, for fast separations or for low limits of detection. To illustrate these features the separation of four anions within 16 seconds is demonstrated as well as the determination of nitrite below 1 µM. The determination of phosphate at a sewage treatment plant was carried out to demonstrate a field application. The successful quantification of chloride, sulphate and nitrate in rain water over a period of three hours confirms the suitability of the instrument for automated monitoring operations.
Authors:
Thanh Duc Mai; Thi Thanh Thuy Pham; Pham Hung Viet; Jorge Saiz; Carmen Garcia-Ruiz; Peter C Hauser
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-22
Journal Detail:
Title:  Analytical chemistry     Volume:  -     ISSN:  1520-6882     ISO Abbreviation:  Anal. Chem.     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-22     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370536     Medline TA:  Anal Chem     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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