Improvements in identification and quantitation of alkylated PAHs and forensic ratio sourcing
Open Access
- 28 January 2021
- journal article
- research article
- Published by Springer Science and Business Media LLC in Analytical and Bioanalytical Chemistry
- Vol. 413 (6), 1651-1664
- https://doi.org/10.1007/s00216-020-03127-0
Abstract
Parent and alkylated polycyclic aromatic hydrocarbons (PAHs) are present in a number of different sources in varying proportions depending on the source material and weathering. This range of PAH sources can make it difficult to determine the origin of exposure(s). Ratios of alkylated and parent PAHs have been applied as a forensic tool to distinguish between different sources. However, few studies have examined PAH ratios comprehensively as indicators for sourcing beyond a single study area or matrix type. In this paper, we introduce an expanded analytical method based on ASTM D7363-13a which we adapted for a gas chromatography triple quadrupole mass spectrometry instrument. The modifications increase selectivity and sensitivity compared to the ASTM method. We added five alkylated series to the method. This method has then been applied to 22 independent forensic ratios. We evaluated the method and the forensic ratios with certified reference materials and known environmental samples. This analytical method and thirteen PAH ratios were found to accurately predict sources of PAHs. Graphical abstractKeywords
Funding Information
- National Institute of Environmental Health Sciences (P42 ES016465)
This publication has 10 references indexed in Scilit:
- Preparation and performance features of wristband samplers and considerations for chemical exposure assessmentJournal of Exposure Science & Environmental Epidemiology, 2017
- Diffusive flux of PAHs across sediment–water and water–air interfaces at urban superfund sitesEnvironmental Toxicology and Chemistry, 2017
- Modified ion source triple quadrupole mass spectrometer gas chromatograph for polycyclic aromatic hydrocarbon analysesJournal of Chromatography A, 2015
- Source Characterization of Polycyclic Aromatic Hydrocarbons by Using Their Molecular Indices: An Overview of PossibilitiesReviews of Environmental Contamination and Toxicology, 2014
- Alkyl polycyclic aromatic hydrocarbons emissions in diesel/biodiesel exhaustAtmospheric Environment, 2014
- The acute toxicity of chemically and physically dispersed crude oil to key arctic species under arctic conditions during the open water seasonEnvironmental Toxicology and Chemistry, 2013
- PAH diagnostic ratios for the identification of pollution emission sourcesEnvironmental Pollution, 2012
- Impact of the Deepwater Horizon Oil Spill on Bioavailable Polycyclic Aromatic Hydrocarbons in Gulf of Mexico Coastal WatersEnvironmental Science & Technology, 2012
- Evaluating Human Risk from Exposure to Alkylated PAHs in an Aquatic SystemHuman and Ecological Risk Assessment: An International Journal, 2007
- PAHs in the Fraser River basin: a critical appraisal of PAH ratios as indicators of PAH source and compositionOrganic Geochemistry, 2002