NissirosV1, Main, Exploration, bibRecord, 000044

Sampling and analytical procedures for the determination of VOCs released into air from natural and anthropogenic sources: A comparison between SPME (Solid Phase Micro Extraction) and ST (Solid Trap) methods

Identifieur interne : 000044 ( Main/Exploration ); précédent : 000043; suivant : 000045

Sampling and analytical procedures for the determination of VOCs released into air from natural and anthropogenic sources: A comparison between SPME (Solid Phase Micro Extraction) and ST (Solid Trap) methods

Auteurs : F. Tassi [Italie] ; F. Capecchiacci [Italie] ; A. Buccianti [Italie] ; O. Vaselli [Italie]

Source :

Applied geochemistry [ 0883-2927 ] ; 2012.

RBID : Pascal:12-0100268

Descripteurs français

Pascal (Inist)
- Echantillonnage, Air, Phase solide, Extraction, Piège, Réservoir, Remblaiement, Acier, Haute température, Fumerolle, Récupération, Déchet solide, Site décharge déchet, Gaz, Absorption, Interférence, Vapeur eau, Concentration, Couplage, Chromatographie phase gazeuse, Collection, Ile Vulcano, Italie, Grèce, Florence.
Wicri :
- geographic : Italie, Grèce.
- topic : Acier, Gaz.

English descriptors

KwdEn :
- Florence Italy, Greece, Italy, Vulcano, absorption, air, collections, concentration, coupling, extraction, fumaroles, gas chromatography, gases, high temperature, interferences, landfills, recovery, reservoirs, sampling, solid phase, solid waste, steel, traps, waste disposal sites, water vapor.

Abstract

In the present study, two sampling and analytical methods for VOC determination in fumarolic exhalations related to hydrothermal-magmatic reservoirs in volcanic and geothermal areas and biogas released from waste landfills were compared: (a) Solid Traps (STs), consisting of three phase (Carboxen B, Carboxen C and Carbosieve S111) absorbent stainless steel tubes and (b) Solid Phase Micro Extraction (SPME) fibers, composed of DiVinylBenzene (DVB), Carboxen and PolyDimethylSiloxane. These techniques were applied to pre-concentrate VOCs discharged from: (i) low-to-high temperature fumaroles collected at Vulcano Island, Phlegrean Fields (Italy), and Nisyros Island (Greece), (ii) recovery wells in a solid waste disposal site located near Florence (Italy). A glass condensing system cooled with water was used to collect the dry fraction of the fumarolic gases, in order to allow more efficient VOC absorption avoiding any interference by water vapor and acidic gases, such as SO₂, H₂S, HF and HCI, typically present at relatively high concentrations in these fluids. Up to 37 organic species, in the range of 40-400 m/z, were determined by coupling gas chromatography to mass spectrometry (GC-MS). This study shows that the VOC compositions of fumaroles and biogas determined via SPME and ST are largely consistent and can be applied to the analysis of VOCs in gases released from different natural and anthropogenic environments. The SPME method is rapid and simple and more appropriate for volcanic and geothermal emissions, where VOCs are present at relatively high concentrations and prolonged gas sampling may be hazardous for the operator. The ST method, allowing the collection of large quantities of sample, is to be preferred to analyze the VOC composition of fluids from diffuse emissions and air, where these compounds are present at relatively low concentrations.

Affiliations:

Italie

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Le document en format XML

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<front><div type="abstract" xml:lang="en">In the present study, two sampling and analytical methods for VOC determination in fumarolic exhalations related to hydrothermal-magmatic reservoirs in volcanic and geothermal areas and biogas released from waste landfills were compared: (a) Solid Traps (STs), consisting of three phase (Carboxen B, Carboxen C and Carbosieve S111) absorbent stainless steel tubes and (b) Solid Phase Micro Extraction (SPME) fibers, composed of DiVinylBenzene (DVB), Carboxen and PolyDimethylSiloxane. These techniques were applied to pre-concentrate VOCs discharged from: (i) low-to-high temperature fumaroles collected at Vulcano Island, Phlegrean Fields (Italy), and Nisyros Island (Greece), (ii) recovery wells in a solid waste disposal site located near Florence (Italy). A glass condensing system cooled with water was used to collect the dry fraction of the fumarolic gases, in order to allow more efficient VOC absorption avoiding any interference by water vapor and acidic gases, such as SO<sub>2</sub>
, H<sub>2</sub>
S, HF and HCI, typically present at relatively high concentrations in these fluids. Up to 37 organic species, in the range of 40-400 m/z, were determined by coupling gas chromatography to mass spectrometry (GC-MS). This study shows that the VOC compositions of fumaroles and biogas determined via SPME and ST are largely consistent and can be applied to the analysis of VOCs in gases released from different natural and anthropogenic environments. The SPME method is rapid and simple and more appropriate for volcanic and geothermal emissions, where VOCs are present at relatively high concentrations and prolonged gas sampling may be hazardous for the operator. The ST method, allowing the collection of large quantities of sample, is to be preferred to analyze the VOC composition of fluids from diffuse emissions and air, where these compounds are present at relatively low concentrations.</div>
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Sampling and analytical procedures for the determination of VOCs released into air from natural and anthropogenic sources: A comparison between SPME (Solid Phase Micro Extraction) and ST (Solid Trap) methods

Sampling and analytical procedures for the determination of VOCs released into air from natural and anthropogenic sources: A comparison between SPME (Solid Phase Micro Extraction) and ST (Solid Trap) methods

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri