Journal
ANALYTICA CHIMICA ACTA
Volume 775, Issue -, Pages 50-57Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.aca.2013.03.004
Keywords
Air-assisted liquid-liquid microextraction; Derivatization; Primary aliphatic amines; Gas chromatography
Categories
Funding
- Research Council of University of Tabriz
Ask authors/readers for more resources
The paper presents a new method based on simultaneous derivatization and air-assisted liquid-liquid microextraction (AALLME) for the extraction and preconcentration of some aliphatic amines prior to gas chromatography-flame ionization detection (GC-FID). Primary aliphatic amines are derivatized and extracted simultaneously by a fast reaction with butylchloroformate (derivatization agent/extraction solvent) under mild conditions. The mixture of butylchloroformate and aqueous sample solution is rapidly sucked into a 10-mL glass syringe and then is injected into a test tube with conical bottom and the procedure is repeated seven times. After centrifuging the resulted cloudy solution, the derivatized analytes in the sedimented phase are determined by GC-FID. The influence of main factors on the efficiency of derivatization/extraction procedure is studied. Under the optimal conditions, the enrichment factors (EFs) for aliphatic amines are obtained in the range of 248-360 and limits of detection (LODs) are between 0.30 and 2.6 mu g L-1. The obtained extraction recoveries ranged from 50 to 72% and the relative standard deviation (RSD) was less than 4.8% for intra-day (n = 6) and inter-days (n = 4) precision. The method is successfully applied to determine some aliphatic amines in environmental water samples. (C) 2013 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available