Document Detail

Determination of linear alkylbenzenesulfonates (LASs) in sewage sludge and carrots by capillary electrophoresis--UV detection.
MedLine Citation:
PMID:  19507437     Owner:  NLM     Status:  MEDLINE    
A method based on capillary zone electrophoresis has been proposed in order to separate and determine four groups of linear alkylbenzenesulfonates in sewage sludge and carrots. The separation was carried out in a silica capillary of 50 cm x 75 microm at 25 kV using a sodium borate buffer solution of 100 mM which includes 40% of acetonitrile. The detection was made by UV-Vis diode array detector. Precision, accuracy, linearity, detection and quantification limits of the method were determined. Finally, the method was applied to analyse samples of sewage sludge from a wastewater depuration station in Crispijana (Alava, Spain) and carrots sown in soils spiked with this sludge. In this case, it is necessary to carry out an extraction step for its determination. The extraction was carried out by solid phase extraction with a C18 cartridge. The solid phase extraction (SPE) parameters were also optimized and the recoveries were calculated. Samples of sewage sludge were analysed weekly during two years and, in all cases, results under legal limits for their use in agriculture were obtained.
Rebeca Alzola; Begoña Pons; David Bravo; Adela Arranz
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Validation Studies    
Journal Detail:
Title:  Environmental technology     Volume:  30     ISSN:  0959-3330     ISO Abbreviation:  Environ Technol     Publication Date:  2009 Apr 
Date Detail:
Created Date:  2009-06-10     Completed Date:  2009-06-26     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9884939     Medline TA:  Environ Technol     Country:  England    
Other Details:
Languages:  eng     Pagination:  463-8     Citation Subset:  IM    
Department of Analytical Chemistry, Pharmacy Faculty, University of the Basque County, Alava, Spain.
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MeSH Terms
Daucus carota / chemistry*
Electrophoresis, Capillary / methods*
Sewage / chemistry*
Spectrophotometry, Ultraviolet / methods*
Reg. No./Substance:

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