eCite Digital Repository

Organic analysis by ion chromatography 1. Determination of aromatic amines and aromatic diisocyanates by cation-exchange chromatography with amperometric detection

Citation

Zhu, Y and Wang, M and Du, H and Wang, F and Mou, S and Haddad, PR, Organic analysis by ion chromatography 1. Determination of aromatic amines and aromatic diisocyanates by cation-exchange chromatography with amperometric detection, Journal of Chromatography A, 956, (1-2) pp. 215-220. ISSN 0021-9673 (2002) [Refereed Article]


Preview
PDF
Restricted - Request a copy
117Kb
  

Copyright Statement

The definitive version is available at http://www.sciencedirect.com

Official URL: http://www.sciencedirect.com

DOI: doi:10.1016/S0021-9673(02)00238-8

Abstract

A method has been developed for the simultaneous determination of a range of aromatic amines using cation-exchange chromatography performed on a standard ion chromatography column using d.c. amperometric detection. The analytes separated were 2,4- and 2,6-toluenediamine (2,4- and 2,6-TDA), aniline, o-toluidine, benzidine, p-chloroaniline, 4,4′-diaminodiphenyl (4,4′-DDP), m-nitroaniline and 1-naphthylamine. A Dionex CS12 column was used with gradient elution from an initial eluent of 5% CH3CN+35 mM H2SO4 to 27% CH3CN+35 mM H2SO4 (at 35 min). Detection limits in the range 2.622.6 μg/l were observed for all analytes except m-nitroaniline, for which the detection limit was 201 μg/l. Linear calibrations and good precision were observed and the method was applied to the determination of benzidine, p-chloroaniline and 1-naphthylamine in wastewater samples. Further, the separation was also used (after some modification of the eluent conditions) for the determination of 2,4- and 2,6-toluene diisocyanate (2,4- and 2,6-TDI) and 4,4′-methylenediphenyl diisocyanate (4,4′-MDI) after their hydrolysis to 2,4-TDA, 2,6-TDA and 4,4′-DDP. Detection limits for 2,6- and 2,4-TDI and 4,4′-MDI were 3.8, 8.2, and 11.2 μg/l, respectively. The method was applied to the determination of diisocyanates in air.

Item Details

Item Type:Refereed Article
Keywords:A method has been developed for the simultaneous determination of a range of aromatic amines using cation-exchange chromatography performed on a standard ion chromatography column using d.c. amperometric detection. The analytes separated were 2,4- an
Research Division:Chemical Sciences
Research Group:Analytical Chemistry
Research Field:Separation Science
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Chemical Sciences
Author:Zhu, Y (Professor Zhu)
Author:Haddad, PR (Professor Paul Haddad)
ID Code:25305
Year Published:2002
Web of Science® Times Cited:26
Deposited By:Chemistry
Deposited On:2002-08-01
Last Modified:2010-02-05
Downloads:0

Repository Staff Only: item control page