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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.
- Source :
-
Analytica chimica acta [Anal Chim Acta] 2013 Jun 27; Vol. 785, pp. 67-74. Date of Electronic Publication: 2013 May 14. - Publication Year :
- 2013
-
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.<br /> (Copyright © 2013 Elsevier B.V. All rights reserved.)
- Subjects :
- Air Pollutants isolation & purification
Gas Chromatography-Mass Spectrometry instrumentation
Humidity
Needles
Solid Phase Microextraction
Temperature
Volatile Organic Compounds isolation & purification
Air Pollutants analysis
Gas Chromatography-Mass Spectrometry methods
Gels chemistry
Nanotubes, Carbon chemistry
Silicon Dioxide chemistry
Volatile Organic Compounds analysis
Subjects
Details
- Language :
- English
- ISSN :
- 1873-4324
- Volume :
- 785
- Database :
- MEDLINE
- Journal :
- Analytica chimica acta
- Publication Type :
- Academic Journal
- Accession number :
- 23764445
- Full Text :
- https://doi.org/10.1016/j.aca.2013.04.057