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Detector supports: application to aliphatic amines in wastewater.
MedLine Citation:
PMID:  18969787     Owner:  NLM     Status:  In-Data-Review    
Solid support assisted derivatization coupled to diffuse reflectance spectroscopy (DRS) was proposed and proved useful for the detection and quantification of aliphatic amines in water as an example. Dabsyl chloride (DBS), ninhydrin and sodium 1,2-naphtoquinone 4-sulphonate (NQS) were assayed as derivatization reagents. C(18) and SDB-XC disks and C(18) cartridges were tested for amine retention and after that derivatization. The decrease of the orange colour of dabsyl chloride on SBD-XC disks produced by the formation of its derivative with methylamine in the support (10min at 100 degrees C) allowed the selective determination of the amine at concentration level equal or higher than 0.5mgL(-1). Ninhydrin can be used for methylamine, ethylamine, propylamine, butylamine and pentylamine (between 5 and 15mgL(-1)) by measuring the diffuse reflectance produced by the brown derivative formed in C(18) extraction disks after 15min at 100 degrees C. NQS and C(18) SPE columns can be also employed to estimate amines, but the detection limits were higher than those provided by DBS and Ninhydrin, around 10mgL(-1). As an example, found concentration of methylamine or total amines (expressed as -NH(2)-N mgL(-1)) in a wastewater sample is given employing dabsyl chloride or ninhydrin reagents, respectively with satisfactory results.
Y Moliner-Martinez; P Campíns-Falcó
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Talanta     Volume:  65     ISSN:  1873-3573     ISO Abbreviation:  Talanta     Publication Date:  2005 Jan 
Date Detail:
Created Date:  2008-10-30     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  2984816R     Medline TA:  Talanta     Country:  England    
Other Details:
Languages:  eng     Pagination:  217-22     Citation Subset:  -    
Department of Analytical Chemistry, University of Valencia, Dr. Moliner 50, 46100-Burjassot, Valencia, Spain.
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