https://repositorio.ufba.br/handle/ri/5138
Tipo: | Artigo de Periódico |
Título: | Atmospheric H2O2 field measurements in a tropical environment: Bahia, Brazil |
Título(s) alternativo(s): | Atmospheric Environment |
Autor(es): | Tavares, Tânia Mascarenhas Jacob, P. Campos, Vânia Palmeira Klockow, D. |
Autor(es): | Tavares, Tânia Mascarenhas Jacob, P. Campos, Vânia Palmeira Klockow, D. |
Abstract: | Concentrations of H202 in atmospheric gas and liquid phases were determined for the first time in the tropical Southern Hemisphere. Measurements were carried out in the Salvador area, Bahia, 13°S, 38 ° W) both at the seaside and 500 m away from it as well as at 270 km inland, in a rural area, during March-April 1988. Gaseous H20 2 was collected by cryogenic and rain by wet only sampling. Analyses were performed with the peroxyoxalate chemiluminescence method, employing a compact field apparatus. The measured gas phase concentrations ranged from 0.2 to 3.9 ppbv compared to 0.01-0.6 ppbv obtained from measurements with similar methodology in Dortmund (51°30'N, 7°30'E), F.R.G, during summer. The corresponding concentration ranges in rainwater are 0.9-6.8 ppmw (Bahia) and 0.1-2.2 ppmw (Dortmund, summertime). Gas/liquid H202 equilibrium during rain events is only attained at precipitation rates below 1 mmh -1. |
Palavras-chave: | Hydrogen peroxide cryo sampling tropical environment gas/liquid distribution |
URI: | http://www.repositorio.ufba.br/ri/handle/ri/5138 |
Data do documento: | 1990 |
Aparece nas coleções: | Artigo Publicado em Periódico (Química) |
Arquivo | Descrição | Tamanho | Formato | |
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s2.0-0960168690901176-main.pdf | 469,28 kB | Adobe PDF | Visualizar/Abrir |
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