Különbözo adszorbensek alkalmazhatóságának vizsgálata illékony szerves légszennyezok diffúziós mintavételére

Translated title of the contribution: Evaluation of the applicability of different adsorbents for the diffusive sampling of volatile organic hydrocarbons in ambient air

Tolnai Balázs, Barkó György, J. Hlavay, A. Gelencsér

Research output: Contribution to journalArticle

Abstract

Diffusive sampling is rapidly gaining ground in environmental monitoring, since it is capable of delivering time-weighted average concentrations over a relatively long period of time. In this study uptake rates on Carbopack B adsorbent were determined and the applicability of different adsorbents (Tenax TA, Tenax GR and Carbopack B) for tube-type diffusive sampling of volatile organic hydrocarbons in ambient air was studied. On Carbopack B adsorbent the experimentally determined uptake rates were lower than the theoretical values. Comparing to Tenax TA adsorbent, uptake rates were found higher for n-hexane, n-nonane, benzene, toluene, ethylbenzene, m-xylene, o-xylene and styrene, and lower for n-heptane, and n-octane. Evaluation of Tenax TA, Tenax GR and Carbopack B adsorbent for sampling of trace volatile organic pollutants in tube-type diffusive samplers was also carried out. The study involved 10 volatile organic substances, (n-hexane, n-heptane, n-octane, n-nonane, benzene, toluene, ethylbenzene, m-xylene, o-xylene and styrene). These priority pollutants are those most often found in the atmosphere. Field comparison of diffusive samplers were performed in Veszprém, Hungary in November, 1999. Two sites characterised by low and high level of traffic were sampled. The concentrations determined were in good agreement for all adsorbents at both sites. All adsorbents were suitable for sampling volatile hydrocarbons at ambient concentrations. 10-days sampling time was sufficient for the quantitative analysis of 10 VOCs, even in the background area. In general, using Carbopack B adsorbent the analysis is more sensitive than that of Tenax TA or Tenax GR for the volatile compounds, though its applicability for the less volatile compounds is limited. Since the most abundant and toxic aromatic compounds are highly volatile, Carbopack B adsorbent is better suited for their environmental monitoring by diffusive sampling.

Original languageHungarian
Pages (from-to)270-276
Number of pages7
JournalMagyar Kemiai Folyoirat, Kemiai Kozlemenyek
Volume106
Issue number7
Publication statusPublished - 2000

Fingerprint

Hydrocarbons
Adsorbents
Sampling
Air
Styrene
Toluene
Benzene
Monitoring
Aromatic compounds
Organic pollutants
Poisons
tenax
Volatile organic compounds
Chemical analysis

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

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title = "K{\"u}l{\"o}nb{\"o}zo adszorbensek alkalmazhat{\'o}s{\'a}g{\'a}nak vizsg{\'a}lata ill{\'e}kony szerves l{\'e}gszennyezok diff{\'u}zi{\'o}s mintav{\'e}tel{\'e}re",
abstract = "Diffusive sampling is rapidly gaining ground in environmental monitoring, since it is capable of delivering time-weighted average concentrations over a relatively long period of time. In this study uptake rates on Carbopack B adsorbent were determined and the applicability of different adsorbents (Tenax TA, Tenax GR and Carbopack B) for tube-type diffusive sampling of volatile organic hydrocarbons in ambient air was studied. On Carbopack B adsorbent the experimentally determined uptake rates were lower than the theoretical values. Comparing to Tenax TA adsorbent, uptake rates were found higher for n-hexane, n-nonane, benzene, toluene, ethylbenzene, m-xylene, o-xylene and styrene, and lower for n-heptane, and n-octane. Evaluation of Tenax TA, Tenax GR and Carbopack B adsorbent for sampling of trace volatile organic pollutants in tube-type diffusive samplers was also carried out. The study involved 10 volatile organic substances, (n-hexane, n-heptane, n-octane, n-nonane, benzene, toluene, ethylbenzene, m-xylene, o-xylene and styrene). These priority pollutants are those most often found in the atmosphere. Field comparison of diffusive samplers were performed in Veszpr{\'e}m, Hungary in November, 1999. Two sites characterised by low and high level of traffic were sampled. The concentrations determined were in good agreement for all adsorbents at both sites. All adsorbents were suitable for sampling volatile hydrocarbons at ambient concentrations. 10-days sampling time was sufficient for the quantitative analysis of 10 VOCs, even in the background area. In general, using Carbopack B adsorbent the analysis is more sensitive than that of Tenax TA or Tenax GR for the volatile compounds, though its applicability for the less volatile compounds is limited. Since the most abundant and toxic aromatic compounds are highly volatile, Carbopack B adsorbent is better suited for their environmental monitoring by diffusive sampling.",
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year = "2000",
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AB - Diffusive sampling is rapidly gaining ground in environmental monitoring, since it is capable of delivering time-weighted average concentrations over a relatively long period of time. In this study uptake rates on Carbopack B adsorbent were determined and the applicability of different adsorbents (Tenax TA, Tenax GR and Carbopack B) for tube-type diffusive sampling of volatile organic hydrocarbons in ambient air was studied. On Carbopack B adsorbent the experimentally determined uptake rates were lower than the theoretical values. Comparing to Tenax TA adsorbent, uptake rates were found higher for n-hexane, n-nonane, benzene, toluene, ethylbenzene, m-xylene, o-xylene and styrene, and lower for n-heptane, and n-octane. Evaluation of Tenax TA, Tenax GR and Carbopack B adsorbent for sampling of trace volatile organic pollutants in tube-type diffusive samplers was also carried out. The study involved 10 volatile organic substances, (n-hexane, n-heptane, n-octane, n-nonane, benzene, toluene, ethylbenzene, m-xylene, o-xylene and styrene). These priority pollutants are those most often found in the atmosphere. Field comparison of diffusive samplers were performed in Veszprém, Hungary in November, 1999. Two sites characterised by low and high level of traffic were sampled. The concentrations determined were in good agreement for all adsorbents at both sites. All adsorbents were suitable for sampling volatile hydrocarbons at ambient concentrations. 10-days sampling time was sufficient for the quantitative analysis of 10 VOCs, even in the background area. In general, using Carbopack B adsorbent the analysis is more sensitive than that of Tenax TA or Tenax GR for the volatile compounds, though its applicability for the less volatile compounds is limited. Since the most abundant and toxic aromatic compounds are highly volatile, Carbopack B adsorbent is better suited for their environmental monitoring by diffusive sampling.

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