Title

A Comprehensive Two-Dimensional Gas Chromatography Method for Analyzing Extractable Petroleum Hydrocarbons in Water and Soil

Document Type

Article

Publication Date

11-1-2007

Publication Title

Journal of Chromatographic Science

Abstract

A flow-switching two-dimensional gas chromatography (GCxGC) apparatus has been constructed that can operate at temperatures as high as 340 degrees C. This system is employed to analyze complex hydrocarbon mixtures such as diesel fuel, gas-oil, motor oil, and petroleum contaminated environmental samples. The GCxGC system generates two-dimensional chromatograms with minimal overlap between the aliphatic and aromatic regions This allows these compound classes to be independently quantitated without prior fractionation. The GCxGC system is used to analyze extracts of spiked water samples, wastewater, and soil. The accuracy of the method is compared to that of the Massachusetts Extractable Petroleum Hydrocarbons (MA EPH) method. The GCxGC system generates a quantitative accuracy similar to the MA EPH method for the analysis of spiked water samples. The GCxGC method and the MA EPH method generate comparable levels of total hydrocarbons when wastewater is analyzed, but the GCxGC method detects a significantly higher aromatic content and lower aliphatic content. Both the GCxGC method and MA EPH method measure comparable levels of aromatics in the soil samples.

Volume

45

Issue

10

First Page

657

Last Page

663

DOI

https://doi.org/10.1093/chromsci/45.10.657

ISSN

0021-9665

Comments

ESSN: 1945-239X

Rights

Silverchair Information Systems

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