VOC in an urban and industrial harbor on the French North Sea coast during two contrasted meteorological situations

Roukos, Joelle; Riffault, Véronique; Locoge, N.; Plaisance, H.

doi:10.1016/j.envpol.2009.05.059

Cited by 74 publications

(48 citation statements)

References 28 publications

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“…BTEX levels are usually highest near major sources and generally disperse in agreement with the prominent wind patterns and local terrain (Terrés et al [10], Roukos et al [21], Roukos et al [23]). Thus, the BTEX levels in the Panorama area are not from transboundary pollution, but from local sources.…”

Section: (A) (B) (C)mentioning

confidence: 93%

“…The success of passive sampling has been noted in previous studies (e.g. Roukos et al [21], Zabiegała et al [22], Roukos et al [23]); hence, using a Radiello Passive Sampling strategy for this sampling campaign was ideal. The sampler measures ambient concentrations as a weighted average over a specific sampling time using a diffusion technique based on Fick's law of diffusion (Minguy et al [24]).…”

Section: Methodsmentioning

confidence: 99%

“…The monitored measurements were used for spatial mapping of BTEX (e.g. Terrés et al [10], Roukos et al [21], Zabiegała et al [22], Roukos et al [23]); to create a raster surface using Kriging (Zabiegała et al [22]). …”

Section: Methodsmentioning

confidence: 99%

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The Influence of Btex Landfill Gas Emissions: A Case Study of Residents in Roodepoort, Gauteng, South Africa

Roffe¹,

Moolla²,

Grab³

2017

WIT Transactions on Ecology and the Environment

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Landfills produce pollutants that negatively impact humans and the environment. In developing countries such as South Africa, landfilling is the most common form of solid waste management. People living in close proximity to landfills are particularly at risk to harmful pollutants such as volatile organic compounds (VOCs). Although VOCs only constitute ~1% of landfill gas (LFG) emissions, they are of concern as the risk associated with these pollutants is high. Of particular concern within the VOCs, is the BTEX group (viz. benzene, toluene, ethyl benzene and xylenes). These pollutants are wind dispersed to surrounding residential areas, exposing residents to hazardous gases. BTEX LFG emissions were quantified and spatially mapped using Radiello Passive Samplers (analysed by a GC with built-in FID) in residential areas around a landfill in Roodepoort, South Africa. The BTEX levels ranged from 8.83 to 39.62 µg.m -3 . The effect of the slow south to south-westerly wind speeds of ~2.44 m.s -1 , the valley terrain, and the location of the landfill resulted in a BTEX 'hotspot' north and east of the landfill site. Combined with the passive sampling strategy, a study on residents perceptions revealed that residents were concerned with this 'hotspot' area and linked it to the landfill site. They were furthermore concerned with the landfill's associated pollution and odours. It was concluded that residents living closer to the landfill were at higher risk to BTEX, especially during the winter season. Future work should include sampling at the landfill site, specifically over different time frames to include seasonality, and possibly using different sampling methods.

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Section: (A) (B) (C)mentioning

confidence: 93%

Section: Methodsmentioning

confidence: 99%

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The Influence of Btex Landfill Gas Emissions: A Case Study of Residents in Roodepoort, Gauteng, South Africa

Roffe¹,

Moolla²,

Grab³

2017

WIT Transactions on Ecology and the Environment

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“…Le naphtalène, par exemple, est mesuré jusqu'à 0,87 ppb v le 20 juin, et le benzène et le toluène atteignent 1,38 et 5,70 ppb v le 21 juin, respectivement. Toutefois, les moyennes mesurées restent relativement modérées, comme en témoigne la moyenne de 0,15 ppb v établie pour le fragment m/z 79 (benzène), alors que les prélèvements d' AirPACA par échantillon-nage passif sur le même site indiquent une moyenne annuelle de 0,44 ppb v (AirPACA, 2011) comparable à celle mesurée dans la région de Dunkerque (Roukos, 2009). Les niveaux moyens mesurés à Miramas au cours de la présente campagne sont aussi du même ordre de grandeur, mais ne permettent pas de véri-fier la présence de pics plus intenses en raison de la durée des prélèvements par canisters (voir tableau 1).…”

Section: Variation Des Concentrations En Covunclassified

Variabilité physico-chimique des épisodes de pollution atmosphérique à proximité de la zone industrialo-portuaire de Fos-sur-Mer

Dron¹,

Chamaret²,

Marchand³

et al. 2017

Pollution Atmosphérique

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RésuméUne meilleure connaissance des épisodes de pollution atmosphérique aux abords des zones industrialo-portuaires est indispensable à l'évaluation de leurs impacts environnementaux et sanitaires à l'échelle locale. Or on constate un manque de données autour des sites industriels. Des moyens importants de mesures atmosphériques ont été déployés à Fos-sur-Mer et à Miramas, à proximité des complexes industriels de la zone de Fos-Étang de Berre, afin de produire un aperçu détaillé des caractéristiques physico-chimiques des particules et des composés organiques volatils présents dans un environnement industriel.Les résultats obtenus témoignent de la complexité et de la variabilité des épisodes de pollution, tant du point de vue du nombre et de la granulométrie des particules que de leur composition chimique. Au cours de cette campagne d'un mois (juin 2011), le nombre de particules dépasse à plusieurs reprises 100 000 particules.cm -3 , souvent associés à des pics de SO 2 . Le nombre de particules n'est en revanche que peu corrélé aux variations de PM 10 . Les élévations sont généralement rapides et intenses pour le nombre de particules comme pour les composés organiques volatils, mais ces derniers ne sont pas systématiquement associés aux particules ou au SO 2 .Ces résultats traduisent une exposition des populations de ce territoire à des pics intenses de pollution atmosphérique, notamment en nombre de particules ultrafines, et ce malgré des indicateurs réglementaires ne marquant aucun dépassement au cours de la campagne. La spécificité des zones industrielles avec de nombreuses sources fixes et variées conduit à une exposition du site de Fos-sur-Mer particulièrement complexe et changeante. D'après les résultats obtenus, il semble que le site de Miramas, plus éloigné de la zone industrialo-portuaire, subisse également l'influence des émissions issues de l'activité industrielle et logistique. Mots-clésnombre de particules, taille de particules, composition chimique, composés organiques volatils, zone industrielle, Fos-sur-Mer(1) Institut Écocitoyen pour la Connaissance des Pollutions -Centre de Vie La Fossette -RD 268, 13270 Fos-sur-Mer (2) Institut Écocitoyen pour la Connaissance des Pollutions (3)

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“…These elevated urban atmospheric levels have been directly associated with various urban sources such as industrial discharges and the burning of fossil fuels (Roukos et al, 2009). Atmospheric benzene and toluene can penetrate indoors, thereby elevating their indoor levels (Häninen et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Application of Light-emitting-diodes to Annular-type Photocatalytic Reactor for Removal of Indoor-level Benzene and Toluene

Jo¹,

Kang²,

Kim³

2012

Journal of Environmental Science International

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Unlike water applications, the photocatalytic technique utilizing light-emitting-diodes as an alternative light source to conventional lamp has rarely been applied for low-level indoor air purification. Accordingly, this study investigated the applicability of UV-LED to annular-type photocatalytic reactor for removal of indoor-level benzene and toluene at a low concentration range associated with indoor air quality issues. The characteristics of photocatalyst was determined using an X-ray diffraction meter and a scanning electron microscope. The photocatalyst baked at 350 o C exhibited the highest photocatalytic degradation efficiencies(PDEs) for both benzene and toluene, and the photocatalysts baked at three higher temperatures(450, 550, and 650 o C) did similar PDEs for these compounds. The average PDEs over a 3-h period were 81% for benzene and close to 100% for toluene regarding the photocatalyst baked at 350 o C, whereas they were 61 and 74% for benzene and toluene, respectively, regarding the photocatalyst baked at 650 o C. As the light intensity increased from 2.4 to 3.5 MW cm -1 , the average PDE increased from 36 to 81% and from 44% to close to 100% for benzene and toluene, respectively. In addition, as the flow rate increased from 0.1 to 0.5 L min -1 , the average PDE decreased from 81% to close to zero and from close to 100% to 7% for benzene and toluene, respectively. It was found that the annular-type photocatalytic reactor inner-inserted with UV-LEDs can effectively be applied for the decomposition of low-level benzene and toluene under the operational conditions used in this study.

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VOC in an urban and industrial harbor on the French North Sea coast during two contrasted meteorological situations

Cited by 74 publications

References 28 publications

The Influence of Btex Landfill Gas Emissions: A Case Study of Residents in Roodepoort, Gauteng, South Africa

The Influence of Btex Landfill Gas Emissions: A Case Study of Residents in Roodepoort, Gauteng, South Africa

Variabilité physico-chimique des épisodes de pollution atmosphérique à proximité de la zone industrialo-portuaire de Fos-sur-Mer

Application of Light-emitting-diodes to Annular-type Photocatalytic Reactor for Removal of Indoor-level Benzene and Toluene

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