Automated Determination of Gasoline Range Organics (GRO) in Water Via Valve-and-Loop Headspace GC

Instrument Type: GC

A Thermo Scientific TRACE 1310 GC-FID coupled to the Thermo Scientific Triplus 300 Headspace Autosampler have been used for the determination of gasoline range organics in water samples. The Gasoline Range Organics (GRO) are markers of possible water contamination due to oil spills and correspond to the range of alkanes from C6 to C10, covering a boiling point range of approximately 60-170°C. According to EPA 5021A, GRO are volatile enough to be effectively removed from environmental samples using an equilibrium headspace procedure.