Samplers for VOCs in air based on cyclodextrin―silica hybrid microporous solid phases

Samplers for VOCs in air based on cyclodextrin-silica hybrid microporous solid phases are proposed. The solid phase preparation is very easy and inexpensive. Proposed samplers compared with other solid phases present the advantages of a wider range of operative conditions for VOCs desorption. Sample...

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Bibliographic Details
Published inAnalyst (London) Vol. 137; no. 5; pp. 1275 - 1283
Main Authors MAURI-AUCEJO, Adela R, LLOBAT-ESTELLES, Maria, EGEA, Mireia Gómez, GUILLEM, Carmen, AMOROS, Pedro
Format Journal Article
LanguageEnglish
Published Cambridge Royal Society of Chemistry 07.03.2012
Subjects
Analysis methods
Analytical chemistry
Applied sciences
Atmospheric pollution
Benzene
Chemistry
Ethylbenzene
Exact sciences and technology
Pollution
Recovery
Reproducibility
Samplers
Solid phases
Toluene
Volatile organic compounds
British Isles
Sample
Toluene
Desorption
Air
Method
Solvent extraction
Silica
Chemical enrichment
Ethylbenzene
Cyclodextrin
Reproducibility
Benzene
Preparation
Acetonitrile
Sampler
Xylene
Parameter
Air pollution
Solid phase
Variation coefficient
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Summary:Samplers for VOCs in air based on cyclodextrin-silica hybrid microporous solid phases are proposed. The solid phase preparation is very easy and inexpensive. Proposed samplers compared with other solid phases present the advantages of a wider range of operative conditions for VOCs desorption. Samplers are tested based on results for the determination of benzene, toluene, ethylbenzene and o-xylene, m-xylene and p-xylene (BTEX) in air. Operational parameters are optimized and quantitative recovery is obtained using a solid phase from 2-hydroxypropyl-β-cyclodextrin and acetonitrile as the extraction solvent. The recoveries obtained are 89 ± 4%, 90 ± 6%, 91 ± 2%, 87.0 ± 0.9%, 88 ± 4%, and 88 ± 4% for benzene, toluene, ethylbenzene, o-xylene, m-xylene and p-xylene, respectively. Moreover results indicate a good reproducibility with a coefficient of variation below 6% and no significant difference between the reproducibility intra-synthesis and inter-synthesis. The proposed procedure has been applied to the determination of BTEX in several contaminated air samples and compared with results provided by a reference method.
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ISSN:0003-2654
1364-5528
DOI:10.1039/c2an16065j