dc.creatorNunes, L. S. S.
dc.creatorTavares, Tânia Mascarenhas
dc.creatorDippel, J.
dc.creatorJaeschke, W.
dc.creatorNunes, L. S. S.
dc.creatorTavares, Tânia Mascarenhas
dc.creatorDippel, J.
dc.creatorJaeschke, W.
dc.date.accessioned2011-12-12T16:24:06Z
dc.date.accessioned2022-10-07T15:01:39Z
dc.date.available2011-12-12T16:24:06Z
dc.date.available2022-10-07T15:01:39Z
dc.date.created2011-12-12T16:24:06Z
dc.date.issued2005
dc.identifierhttp://www.repositorio.ufba.br/ri/handle/ri/4821
dc.identifier50: 79–100
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/4003878
dc.description.abstractAtmospheric concentrations of several reduced sulphur compounds (H2S, COS, CH3SH, CH3SCH3, CS2) originating from both natural and anthropogenic sources were measured at a number of locations in the All Saints Bay area and Reconcavo Baiano, Brazil. The volatile reduced sulphur compounds were collected by pre-concentration using cryo-tubes. Analysis of these compounds was carried out at a later date using gas chromatography with a flame photometric detector. In areas dominated by biogenic sources, the COS concentration varied between 0.5 and 1.0 ppbv, consistent with its normal global distribution in the atmosphere. Areas without direct industrial influence showed low atmospheric concentrations for all volatile sulphur compounds (≤0.25 ppbv). The anthropogenic influence of the Petrochemical Complex in Cama¸cari resulted in relatively high levels of some reduced sulphur compounds, such asCOS(8 ppbv),CH3SH(1.50 ppbv),H2S (1.35 ppbv) and CS2 (0.3 ppbv). In mangrove areas, theH2S concentrations (0.2 ppbv) were almost twice as high as those in the air masses arriving from the Atlantic Ocean. The maximum H2S concentrations were found in the industrial area of the Petrochemical Complex in Cama¸cari, but did not reach the limit of human perception (0.14 ppbv) and rarely reached the typical recognizable smelling level (0.40 ppbv). Industrial emissions from the Landulfo Alves Refinery increased the COS, DMS and CS2 concentrations to 2.0, 0.55 and 0.2 ppbv, respectively.
dc.languageen
dc.subjectanthropogenic sources
dc.subjectatmospheric concentrations
dc.subjectBrazil
dc.subjectmangrove areas
dc.subjectreduced sulphur compounds
dc.titleMeasurements of Atmospheric Concentrations of Reduced Sulphur Compounds in the All Saints Bay Area in Bahia, Brazil
dc.typeArtigo de Periódico


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