Development of Portable Preconcentration-Gas Chromatography System for Fast Analysis of Trace Benzene, Toluene and Xylene in Air

Jung, Young-Rim; 정영림; Kim, Man-Goo; 김만구

오늘 하루 그만보기

P-ISSN1225-0163
E-ISSN2288-8985
SCOPUS, ESCI, KCI

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P-ISSN 1225-0163
E-ISSN 2288-8985

e-Submission

Vol.14, No.5

PubReader Citation

Development of Portable Preconcentration-Gas Chromatography System for Fast Analysis of Trace Benzene, Toluene and Xylene in Air

Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985

2001, v.14 no.5, pp.432-441

Jung, Young-Rim
Kim, Man-Goo

Jung, Y., & Kim, M. (2001). Development of Portable Preconcentration-Gas Chromatography System for Fast Analysis of Trace Benzene, Toluene and Xylene in Air. , 14(5), 432-441.

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Abstract

An automated on-line portable preconcentration-short column gas chromatograph was developed, which used preconcentrator using adsorption tube with Tenax-GR and Curie-point heating. The developed system operated with 3 steps of processing, preconcentration, thermal desorption, and analysis and cleaning, and could continued operating within 1~2 min cycle. The recoveries of preconcentrator for toluene was ranged between $94.7{\pm}6.6%$ and $103.8{\pm}3.1%$ with less than 7% of RSD. For benzene, toluene and xylene(BTX) standard gas test, IDL was 41, 49, $472ng/m^3$ benzene, toluene and o-xylene, respectively. The BTX mixture was analyzed within 30 sec with baseline separation by the system equipped with 4 m long capillary column. The deficiency of separation power caused by short column was solved by the control of sample injection volume and inlet/outlet pressure ratio. The automated portable preconcentration-short column gas chromatograph system was found to be useful for the continuous air monitoring of BTX at ppb levels in ambient air.