« Previous AbstractAphids-induced plant volatiles affect diel foraging behavior of a ladybird beetle Coccinella septempunctata    Next AbstractEffect of PBPK model structure on interpretation of in vivo human aqueous dermal exposure trials »

J Air Waste Manag Assoc

Title:		Large-volume injection PTV-GC-MS analysis of polycyclic aromatic hydrocarbons in air and sediment samples
Author(s):		Norlock FM; Jang JK; Zou Q; Schoonover TM; Li A;
Address:		"School of Public Health, University of Illinois at Chicago, USA"
Journal Title:		J Air Waste Manag Assoc
Year:		2002
Volume:		52
Issue:		1
Page Number:		19 - 26
DOI:		10.1080/10473289.2002.10470752
ISSN/ISBN:		1096-2247 (Print) 1096-2247 (Linking)
Abstract:		"For the analysis of trace organic pollutants in environmental samples using a gas chromatographic (GC) instrument, large-volume injection using the programmable temperature vaporization (PTV) technique has many advantages over the traditional split/splitless injection. By increasing the injection volume from 1 or 2 microL with a split/splitless inlet to 60 microL or higher with the PTV inlet, analytical sensitivity is greatly enhanced for analytes with low concentrations. Results obtained from optimization of instrument operational parameters for analyzing polycyclic aromatic hydrocarbons (PAHs) are reported in this paper. The laboratory method detection limits for 16 PAHs and six deuterated PAH surrogates were determined using seven replicate spike samples. The initial temperature of the inlet was found to be critical in determining the analytical sensitivity of PAHs with two or three rings due to loss of these relatively highly volatile compounds during solvent vaporization. For most PAHs, the response of the mass spectrometry detector increased proportionally as the total injected volume was increased up to 150 microL. Significant interference from rubber material of the sample vial septa was observed"
Keywords:		Air Pollutants/*analysis Environmental Monitoring/*methods Gas Chromatography-Mass Spectrometry Geologic Sediments/*chemistry Polycyclic Aromatic Hydrocarbons/*analysis Sensitivity and Specificity Soil Pollutants/*analysis Specimen Handling Volatilization;
Notes:		"MedlineNorlock, Felice M Jang, Jae-Kil Zou, Qimeng Schoonover, Todd M Li, An eng T42/CCT510424-6/CC/ODCDC CDC HHS/ Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S. 2004/05/22 J Air Waste Manag Assoc. 2002 Jan; 52(1):19-26. doi: 10.1080/10473289.2002.10470752"