dc.creator | Nunes, L. S. S. | |
dc.creator | Tavares, Tânia Mascarenhas | |
dc.creator | Dippel, J. | |
dc.creator | Jaeschke, W. | |
dc.creator | Nunes, L. S. S. | |
dc.creator | Tavares, Tânia Mascarenhas | |
dc.creator | Dippel, J. | |
dc.creator | Jaeschke, W. | |
dc.date.accessioned | 2011-12-12T16:24:06Z | |
dc.date.accessioned | 2022-10-07T15:01:39Z | |
dc.date.available | 2011-12-12T16:24:06Z | |
dc.date.available | 2022-10-07T15:01:39Z | |
dc.date.created | 2011-12-12T16:24:06Z | |
dc.date.issued | 2005 | |
dc.identifier | http://www.repositorio.ufba.br/ri/handle/ri/4821 | |
dc.identifier | 50: 79–100 | |
dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/4003878 | |
dc.description.abstract | Atmospheric 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.language | en | |
dc.subject | anthropogenic sources | |
dc.subject | atmospheric concentrations | |
dc.subject | Brazil | |
dc.subject | mangrove areas | |
dc.subject | reduced sulphur compounds | |
dc.title | Measurements of Atmospheric Concentrations of Reduced Sulphur Compounds in the All Saints Bay Area in Bahia, Brazil | |
dc.type | Artigo de Periódico | |