« Previous AbstractA novel needle trap device with single wall carbon nanotubes sol-gel sorbent packed for sampling and analysis of volatile organohalogen compounds in air    Next AbstractGraphene packed needle trap device as a novel field sampler for determination of perchloroethylene in the air of dry cleaning establishments »

Anal Chim Acta

Title:		"A needle trap device packed with a sol-gel derived, multi-walled carbon nanotubes/silica composite for sampling and analysis of volatile organohalogen compounds in air"
Author(s):		Heidari M; Bahrami A; Ghiasvand AR; Shahna FG; Soltanian AR;
Address:		"Department of Occupational Health, Faculty of Health, Hamadan University of Medical Sciences, Hamadan, Iran"
Journal Title:		Anal Chim Acta
Year:		2013
Volume:		20130514
Issue:
Page Number:		67 - 74
DOI:		10.1016/j.aca.2013.04.057
ISSN/ISBN:		1873-4324 (Electronic) 0003-2670 (Linking)
Abstract:		A needle trap device (NTD) packed with silica composite of multi-walled carbon nanotubes (MWCNTs) prepared based on sol-gel technique was utilized for sampling and analysis of volatile organohalogen compounds (HVOCs) in air. The performance of the NTD packed with MWCNTs/silica composite as sorbent was examined in a variety of sampling conditions and was compared with NTDs packed with PDMS as well as SPME with Carboxen/PDMS-coated fibers. The limit of detection of NTDs for the GC/MS detection system was 0.01-0.05 ng mL(-1) and the limit of quantitation was 0.04-0.18 ng mL(-1). The RSD were 1.1-7.8% for intra-NTD comparison intended for repeatability of technique. The NTD-MWCNTs/silica composite showed better analytical performances compared to the NTD-PDMS composite and had the same analytical performances when compared to the SPME-Carboxen/PDMS fibers. The results show that NTD-MWCNTs-GC/MS is a powerful technique for active sampling of occupational/environmental pollutants in air
Keywords:		"Air Pollutants/*analysis/isolation & purification Gas Chromatography-Mass Spectrometry/instrumentation/*methods Gels/*chemistry Humidity Nanotubes, Carbon/*chemistry Needles Silicon Dioxide/*chemistry Solid Phase Microextraction Temperature Volatile Organ;"
Notes:		"MedlineHeidari, Mahmoud Bahrami, Abdolrahman Ghiasvand, Ali Reza Shahna, Farshid Ghorbani Soltanian, Ali Reza eng Comparative Study Research Support, Non-U.S. Gov't Netherlands 2013/06/15 Anal Chim Acta. 2013 Jun 27; 785:67-74. doi: 10.1016/j.aca.2013.04.057. Epub 2013 May 14"