Detail publikace

High-Molecular Products Analysis of VOC Destruction in Atmospheric Pressure Discharge

GROSSMANNOVÁ, H. CIGÁNEK, M. KRČMA, F.

Originální název

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

We investigate the issue of applicability of the solid phase microextraction (SPME) in the analysis of volatile organic compounds (VOCs) destruction products in the gliding arc discharge. Our research is focused on the measurements with the simple one stage gliding arc reactor, applied voltage was varied in the range of 3.5 - 4 kV. As a carrier gas, the dry air and its mixtures with nitrogen and oxygen, enriched by toluene, with flow rate of 1000-3500 ml/min was used. Total decomposition of toluene of 97 % was achieved at the oxygen content in carrier gas of 60 %. For measurements with air as a carrier gas, the highest efficiency was 95 %. We also tested the SPME technique suitability for the quantitative analysis of exhausts gases and if this technique can be used efficiently in the field to extract by-products. Carbowax/divinylbenzene and Carboxen/polydimethylsiloxane/divinylbenzene fibers were chosen for sampling. Tens of various high-molecular substances were observed, especially a large number of oxygenous compounds and further several nitrogenous and C_xH_y compounds. The concentrations of various generated compounds strongly depend on the oxygen content in gas mixture composition. The results showed that the fiber coated by Carbowax/divinylbenzene can extract more products independently on the used VOC compound. The Carboxen/polydimethylsiloxane/divinylbenzene fiber is useful for the analysis of oxygenous compounds and its use will be recommended especially when the destruction is done in the oxygen rich atmosphere. With the higher ratio of oxygen in the carrier gas a distinctive decline of C_xH_y compounds amount have been observed. We also tried to describe the significant production of some compounds like benzyl alcohol, benzeneacetaldehyde, even in oxygen content is proximate 0 %. Experimental data demonstrated that it is necessary to use several SPME fibers for full-scale high-molecular products analysis.

Klíčová slova

VOC degradation, SPME analysis, GlidArc

Autoři

GROSSMANNOVÁ, H.; CIGÁNEK, M.; KRČMA, F.

Rok RIV

2007

Vydáno

1. 6. 2007

Nakladatel

IOP

ISSN

1742-6596

Periodikum

Journal of Physics: Conference Series

Ročník

Číslo

Stát

Spojené království Velké Británie a Severního Irska

Strany od

012011

Strany do

12016

Strany počet

BibTex

@article{BUT44282,
  author="Hana {Grossmannová} and Miroslav {Cigánek} and František {Krčma}",
  title="High-Molecular Products Analysis of VOC Destruction in Atmospheric Pressure Discharge",
  journal="Journal of Physics: Conference Series",
  year="2007",
  volume="63",
  number="1",
  pages="6",
  issn="1742-6596"
}