Analysis of Diesel Range Organics (DRO) and Motor/Lube Oil Range Organics (ORO) in Ultrashort Run Time

The remediation of contaminated sites by persistent crude oil and petroleum-based products requires rapid analytical methods to assess the environmental health of soils, sediments and water samples. Petroleum hydrocarbon contaminants encompass a very complex mixture of compounds. A group within these contaminants are semivolatilecompounds, which are aliphatic or aromatic hydrocarbons with ten to forty carbons (C10-C40) and boiling point range of 170-520˚C; this group include diesel range organics (DRO, C10-C28) and motor/lube oil range organics (ORO, also referred to as MRO, C28-C40). These chemicals are typically quantified by gas chromatography equipped with flame ionization detector (GC-FID). The scope of EPA method 8015 includes the analysis of DRO. The typical analysis time is over 20 min, and helium is used as the carrier gas for the method1. In this study, analysis of DRO and ORO (C10-C40) were performed using a Shimadzu GC-FID equipped with fast temperature programmable (FTP) column that reduced the GC run time to less than 2 min using either helium (He) or hydrogen (H2) carrier gas. This establishes a high throughput alternative to conventional methods for DRO and ORO quantification.

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Gas Chromatography (GC)
Diesel Range Organics, DRO, Motor Oil, Lube, Oil Range Organics, ORO, Energy and Chemicals, Nexis GC-2030 Gas Chromatograph
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