Mapping and quantifying isomer sets of hydrocarbons (≥C12) in diesel exhaust, lubricating oil and diesel fuel samples using GC× GC-ToF-MS

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@article{730d368500db4e06bada3b07367701be,
title = "Mapping and quantifying isomer sets of hydrocarbons (≥C12) in diesel exhaust, lubricating oil and diesel fuel samples using GC× GC-ToF-MS",
abstract = "Airborne particles and vapours, like many other environmental samples including water, soils and sediments, contain complex mixtures of hydrocarbons, often deriving from crude oil either before or after fractionation into fuels, lubricants and feedstocks. Comprehensive 2D gas chromatography time-of-flight mass spectrometry (GC×GC-ToF-MS), offers a very powerful technique that separates and identifies many compounds in complicated hydrocarbon mixtures. However, quantification and identification of individual constituents at high ionization energies would require hundreds of expensive (when available) standards for calibration. Although the precise chemical structure of hydrocarbons does matter for their environmental impact and fate, strong similarities can be expected for compounds having very similar chemical structures and carbon numbers. There is, therefore, a clear benefit in an analytical technique which is specific enough to separate different classes of compounds and to distinguish homologous series while avoiding the need to handle each isomer individually. Varying EI (electron impact) ionization mass spectrometry significantly enhances the identification of individual isomers and homologous compound groups, which we refer to as isomer sets. Advances are reported in mapping and quantifying isomer sets of hydrocarbons (≥ C12) in diesel fuel, lubricating oil and diesel exhaust emissions. By using this analysis we report mass closures of ca. 90 and 75% for diesel fuel and lubricating oil, and identify 85 and 75% of the total ion current for gas- and particulate-phase diesel exhaust emissions.",
author = "Alam, {Mohammed S.} and Soheil Zeraati-Rezaei and Christopher Stark and Hongming Xu and MacKenzie, {A. Rob} and Harrison, {Roy M.} and Zhirong Liang",
year = "2018",
month = may,
day = "29",
doi = "10.5194/amt-11-3047-2018",
language = "English",
volume = "11",
pages = "3047--3058",
journal = "Atmos. Meas. Tech. Discuss",
issn = "1867-1381",
publisher = "European Geosciences Union",
number = "5",

}

RIS

TY - JOUR

T1 - Mapping and quantifying isomer sets of hydrocarbons (≥C12) in diesel exhaust, lubricating oil and diesel fuel samples using GC× GC-ToF-MS

AU - Alam, Mohammed S.

AU - Zeraati-Rezaei, Soheil

AU - Stark, Christopher

AU - Xu, Hongming

AU - MacKenzie, A. Rob

AU - Harrison, Roy M.

AU - Liang, Zhirong

PY - 2018/5/29

Y1 - 2018/5/29

N2 - Airborne particles and vapours, like many other environmental samples including water, soils and sediments, contain complex mixtures of hydrocarbons, often deriving from crude oil either before or after fractionation into fuels, lubricants and feedstocks. Comprehensive 2D gas chromatography time-of-flight mass spectrometry (GC×GC-ToF-MS), offers a very powerful technique that separates and identifies many compounds in complicated hydrocarbon mixtures. However, quantification and identification of individual constituents at high ionization energies would require hundreds of expensive (when available) standards for calibration. Although the precise chemical structure of hydrocarbons does matter for their environmental impact and fate, strong similarities can be expected for compounds having very similar chemical structures and carbon numbers. There is, therefore, a clear benefit in an analytical technique which is specific enough to separate different classes of compounds and to distinguish homologous series while avoiding the need to handle each isomer individually. Varying EI (electron impact) ionization mass spectrometry significantly enhances the identification of individual isomers and homologous compound groups, which we refer to as isomer sets. Advances are reported in mapping and quantifying isomer sets of hydrocarbons (≥ C12) in diesel fuel, lubricating oil and diesel exhaust emissions. By using this analysis we report mass closures of ca. 90 and 75% for diesel fuel and lubricating oil, and identify 85 and 75% of the total ion current for gas- and particulate-phase diesel exhaust emissions.

AB - Airborne particles and vapours, like many other environmental samples including water, soils and sediments, contain complex mixtures of hydrocarbons, often deriving from crude oil either before or after fractionation into fuels, lubricants and feedstocks. Comprehensive 2D gas chromatography time-of-flight mass spectrometry (GC×GC-ToF-MS), offers a very powerful technique that separates and identifies many compounds in complicated hydrocarbon mixtures. However, quantification and identification of individual constituents at high ionization energies would require hundreds of expensive (when available) standards for calibration. Although the precise chemical structure of hydrocarbons does matter for their environmental impact and fate, strong similarities can be expected for compounds having very similar chemical structures and carbon numbers. There is, therefore, a clear benefit in an analytical technique which is specific enough to separate different classes of compounds and to distinguish homologous series while avoiding the need to handle each isomer individually. Varying EI (electron impact) ionization mass spectrometry significantly enhances the identification of individual isomers and homologous compound groups, which we refer to as isomer sets. Advances are reported in mapping and quantifying isomer sets of hydrocarbons (≥ C12) in diesel fuel, lubricating oil and diesel exhaust emissions. By using this analysis we report mass closures of ca. 90 and 75% for diesel fuel and lubricating oil, and identify 85 and 75% of the total ion current for gas- and particulate-phase diesel exhaust emissions.

UR - http://www.scopus.com/inward/record.url?scp=85047971129&partnerID=8YFLogxK

U2 - 10.5194/amt-11-3047-2018

DO - 10.5194/amt-11-3047-2018

M3 - Article

AN - SCOPUS:85047971129

VL - 11

SP - 3047

EP - 3058

JO - Atmos. Meas. Tech. Discuss

JF - Atmos. Meas. Tech. Discuss

SN - 1867-1381

IS - 5

ER -