Articles producció científica> Química Analítica i Química Orgànica

New approach to resolve the humidity problem in VOC determination in outdoor air samples using solid adsorbent tubes followed by TD-GC-MS

  • Dades identificatives

    Identificador: imarina:5130886
    Autors:
    Maceira A, Vallecillos L, Borrull F, Marcé RM.
    Resum:
    This study describes the humidity effect in the sampling process by adsorbent tubes followed by thermal desorption and gas chromatography-mass spectrometry (TD-GC-MS) for the determination of volatile organic compounds (VOCs) in air samples and evaluates possible solutions to this problem. Two multi-sorbent bed tubes, Tenax TA/Carbograph 1TD and Carbotrap B/Carbopack X/Carboxen 569,were tested in order to evaluate their behaviour in the presence of environmental humidity. Humidity problems were demonstrated with carbon-based tubes, while Tenax-based tubes did not display any influence. Silica gel, a molecular sieve and CaCl2 were tried out as materials for drying tube to remove air humidity, placed prior to the sampling tube to prevent water from entering. The pre-tubes filled with 0.5 g of CaCl2 showed the best results with respect to their blanks, the analytes recoveries and their ability to remove ambient humidity. To avoid the possible agglomeration of CaCl2 during the sampling process in high relative humidity atmospheres, 0.1 g of diatomaceous earth were mixed with the desiccant agent. The applicability of the CaCl2 pre-tube as drying agent prior to Carbotrap B/Carbopack X/Carboxen 569 tubes was tested in urban and industrial locations with samplings of air at high relative humidity. In addition, the results were compared with those obtained using Tenax TA/Carbograph 1TD tubes.
  • Altres:

    Autor segons l'article: Maceira A, Vallecillos L, Borrull F, Marcé RM.
    Departament: Química Analítica i Química Orgànica
    Autor/s de la URV: Borrull Ballarín, Francesc / MACEIRA TORRENTS, ALBA / Marcé Recasens, Rosa Maria / VALLECILLOS MARSAL, LAURA
    Paraules clau: Volatile organic-compounds Volatile organic compounds Thermal desorption Tenax-ta Sorbents Solid adsorbent tubes Pollutants Mass-spectrometry Humidity Gas-chromatography Gas chromatography Desiccant materials Carbotrap Ambient air thermal desorption solid adsorbent tubes humidity gas chromatography desiccant materials
    Resum: This study describes the humidity effect in the sampling process by adsorbent tubes followed by thermal desorption and gas chromatography-mass spectrometry (TD-GC-MS) for the determination of volatile organic compounds (VOCs) in air samples and evaluates possible solutions to this problem. Two multi-sorbent bed tubes, Tenax TA/Carbograph 1TD and Carbotrap B/Carbopack X/Carboxen 569,were tested in order to evaluate their behaviour in the presence of environmental humidity. Humidity problems were demonstrated with carbon-based tubes, while Tenax-based tubes did not display any influence. Silica gel, a molecular sieve and CaCl2 were tried out as materials for drying tube to remove air humidity, placed prior to the sampling tube to prevent water from entering. The pre-tubes filled with 0.5 g of CaCl2 showed the best results with respect to their blanks, the analytes recoveries and their ability to remove ambient humidity. To avoid the possible agglomeration of CaCl2 during the sampling process in high relative humidity atmospheres, 0.1 g of diatomaceous earth were mixed with the desiccant agent. The applicability of the CaCl2 pre-tube as drying agent prior to Carbotrap B/Carbopack X/Carboxen 569 tubes was tested in urban and industrial locations with samplings of air at high relative humidity. In addition, the results were compared with those obtained using Tenax TA/Carbograph 1TD tubes.
    Àrees temàtiques: Zootecnia / recursos pesqueiros Waste management and disposal Saúde coletiva Química Pollution Odontología Nutrição Medicina veterinaria Medicina iii Medicina ii Medicina i Materiais Matemática / probabilidade e estatística Interdisciplinar Historia Geografía Geociências Farmacia Environmental sciences Environmental engineering Environmental chemistry Ensino Engenharias iii Engenharias ii Engenharias i Enfermagem Direito Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Ciência de alimentos Ciência da computação Biotecnología Biodiversidade Astronomia / física
    Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 00489697
    Adreça de correu electrònic de l'autor: rosamaria.marce@urv.cat francesc.borrull@urv.cat
    Identificador de l'autor: 0000-0002-5667-2899 0000-0003-2718-9336
    Data d'alta del registre: 2024-09-07
    Versió de l'article dipositat: info:eu-repo/semantics/acceptedVersion
    Enllaç font original: https://www.sciencedirect.com/science/article/abs/pii/S0048969717312445
    URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referència a l'article segons font original: Science Of The Total Environment. 599-600 1718-1727
    Referència de l'ítem segons les normes APA: Maceira A, Vallecillos L, Borrull F, Marcé RM. (2017). New approach to resolve the humidity problem in VOC determination in outdoor air samples using solid adsorbent tubes followed by TD-GC-MS. Science Of The Total Environment, 599-600(), 1718-1727. DOI: 10.1016/j.scitotenv.2017.05.141
    DOI de l'article: 10.1016/j.scitotenv.2017.05.141
    Entitat: Universitat Rovira i Virgili
    Any de publicació de la revista: 2017
    Tipus de publicació: Journal Publications
  • Paraules clau:

    Environmental Chemistry,Environmental Engineering,Environmental Sciences,Pollution,Waste Management and Disposal
    Volatile organic-compounds
    Volatile organic compounds
    Thermal desorption
    Tenax-ta
    Sorbents
    Solid adsorbent tubes
    Pollutants
    Mass-spectrometry
    Humidity
    Gas-chromatography
    Gas chromatography
    Desiccant materials
    Carbotrap
    Ambient air
    thermal desorption
    solid adsorbent tubes
    humidity
    gas chromatography
    desiccant materials
    Zootecnia / recursos pesqueiros
    Waste management and disposal
    Saúde coletiva
    Química
    Pollution
    Odontología
    Nutrição
    Medicina veterinaria
    Medicina iii
    Medicina ii
    Medicina i
    Materiais
    Matemática / probabilidade e estatística
    Interdisciplinar
    Historia
    Geografía
    Geociências
    Farmacia
    Environmental sciences
    Environmental engineering
    Environmental chemistry
    Ensino
    Engenharias iii
    Engenharias ii
    Engenharias i
    Enfermagem
    Direito
    Ciências biológicas iii
    Ciências biológicas ii
    Ciências biológicas i
    Ciências ambientais
    Ciências agrárias i
    Ciência de alimentos
    Ciência da computação
    Biotecnología
    Biodiversidade
    Astronomia / física
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