Gas chromatography analysis of benzene, toluene, ethylbenzene and xylenes using newly designed needle trap device in aqueous samples
作者： Helena Jurdáková , Róbert Kubinec , Mária Jurčišinová , Žofia Krkošová , Jaroslav Blaško
DOI: 10.1016/J.CHROMA.2008.04.065
关键词:
摘要: Abstract A newly designed needle trap device with Carbopack X as a sorbent material is used for sampling, preconcentration and injection of volatile analytes benzene, toluene, ethylbenzene xylenes (BTEX) into gas chromatograph. The closed system stripping the from water samples was used. An port modified metal liner to desorb trapped in device. main advantage consists simple methodology easiness rapidity analysis. Needle suitable sampling field. experimental parameters breakthrough volume gas, linearity, repeatability limit detection (LOD) quantification (LOQ) were investigated. LOD ranges 0.05 0.07 μg L −1 relative standard deviation 0.5% 11.6% at concentrations 5 0.1 μg L , respectively.
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