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Evaluation of different samplers and storage temperature effect on the methane carbon stable isotope analysis.
Dos Santos, Victor H J M; Laroque, Diane O; Baum, Caroline I; de M Engelmann, Pâmela; Lourega, Rogério V; Rodrigues, Luiz F.
Afiliação
  • Dos Santos VHJM; Institute of Petroleum and Natural Resources, Pontifical Catholic University of Rio Grande do Sul, Av. Ipiranga, 6681 - Building 96J, Porto Alegre, 90619-900, Brazil.
  • Laroque DO; Institute of Petroleum and Natural Resources, Pontifical Catholic University of Rio Grande do Sul, Av. Ipiranga, 6681 - Building 96J, Porto Alegre, 90619-900, Brazil.
  • Baum CI; Institute of Petroleum and Natural Resources, Pontifical Catholic University of Rio Grande do Sul, Av. Ipiranga, 6681 - Building 96J, Porto Alegre, 90619-900, Brazil.
  • de M Engelmann P; Institute of Petroleum and Natural Resources, Pontifical Catholic University of Rio Grande do Sul, Av. Ipiranga, 6681 - Building 96J, Porto Alegre, 90619-900, Brazil.
  • Lourega RV; Institute of Petroleum and Natural Resources, Pontifical Catholic University of Rio Grande do Sul, Av. Ipiranga, 6681 - Building 96J, Porto Alegre, 90619-900, Brazil.
  • Rodrigues LF; Institute of Petroleum and Natural Resources, Pontifical Catholic University of Rio Grande do Sul, Av. Ipiranga, 6681 - Building 96J, Porto Alegre, 90619-900, Brazil. frederico.rodrigues@pucrs.br.
Environ Monit Assess ; 190(10): 573, 2018 Sep 06.
Article em En | MEDLINE | ID: mdl-30191325
The present work evaluates the efficiency of some low-cost sampler container for a reliable carbon stable isotope analysis of methane. The procedure efficiency was evaluated for five containers, through 91 days, under two storage temperatures (4 °C and 25 °C) and the results are compared against a reference sampler by using univariate and multivariate statistical methods. Based on the univariate (ANOVA and comparison statistical methods) and multivariate (PCA and HCA) statistical methods, it was identified that (i) the isotopic value changes with time and, in this way, must be taken in account when choosing the appropriate sampler and (ii) the lower temperature reduces the isotopic fractionation process and is preferable for the gas sample storage. Among the storage systems, two options were found to be statistically equivalent to the reference container (IsoJar) for a time horizon of 91 days. We found that the exetainer (4 °C and 25 °C) storage systems are statistically equivalent to the reference container IsoJar and, in this way, it could be an alternative for the methane isotopic studies.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Dióxido de Carbono / Isótopos de Carbono / Monitoramento Ambiental / Gases de Efeito Estufa / Metano Tipo de estudo: Evaluation_studies Idioma: En Revista: Environ Monit Assess Assunto da revista: SAUDE AMBIENTAL Ano de publicação: 2018 Tipo de documento: Article País de afiliação: Brasil País de publicação: Holanda
Texto completo
Adicionar na Minha BVS
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XML
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Dióxido de Carbono / Isótopos de Carbono / Monitoramento Ambiental / Gases de Efeito Estufa / Metano Tipo de estudo: Evaluation_studies Idioma: En Revista: Environ Monit Assess Assunto da revista: SAUDE AMBIENTAL Ano de publicação: 2018 Tipo de documento: Article País de afiliação: Brasil País de publicação: Holanda