SPME-Headspace GC Analysis of BTEX in Waste Treatment Effluent

September 1, 2008

Researchers from Sao Cristovao and Salvador, Brazil employed a solid-phase microextraction (SPME-headspace gas chromatography (GC) method to analyze benzene, toluene, ethylbenzene, and xylenes (BTEX) in water released from a waste treatment plant.

Researchers from Sao Cristovao and Salvador, Brazil employed a solid-phase microextraction (SPME-headspace gas chromatography (GC) method to analyze benzene, toluene, ethylbenzene, and xylenes (BTEX) in water released from a waste treatment plant. They optimized the extraction step using fractional factorial and central composite designs with experimental factors such as saline concentration, extraction time, desorption time, agitation velocity, and headspace volume. The procedure was based on direct SPME at 50 C using a polydimethylsiloxane fiber.