Biomass burning in the Amazon: characterization of the ionic component of aerosols generated from flaming and smouldering rainforest and savannah

Article Abstract:

The ionic composition of biomass smoke particles was studied by sampling smoke from biomass combustion in Brazilian rainforest and savannah . Smoke particles were grouped into coarse and fine fractions, and then characterized according to geographical region, combustion phase and vegetation type. The results showed that potassium, chloride and sulfate dominated the fine fraction, while calcium and acetate dominated the coarse fraction. Flaming combustion produced the most number of ionic species. Suspension of soil particles, condensation coagulation and release of partially-burned plant materials were the main sources of aerosols.

Composition, Forest fires, Rain forests, Savannas, Smoke

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Characterization of indoor air quality in the cities of Sao Paulo and Rio de Janeiro, Brazil

Article Abstract:

The levels of particle- and gas-phase substances present in the indoor air of restaurants and non-industrial offices in Sao Paulo and Rio de Janeiro were measured as part of a study on indoor air quality in southeastern Brazil. The study involved measurements of inhalable particulate matter, inhalable volatilizable particulate organic carbon, trace metals, black carbon, aldehyde, acetaldehyde, carbon monoxide, nicotine and UV-RSP. The results showed that indoor levels of these substances were generally higher than outdoor levels. The main sources of the some of the major pollutants were also identified.

Research, Indoor air quality, Rio de Janeiro, Brazil (City), Sao Paulo, Brazil (City), Sao Paulo, Brazil, Rio de Janeiro, Brazil

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Distributions of indoor and outdoor air pollutants in Rio de Janeiro, Brazil: implications to indoor air quality in bayside offices

Article Abstract:

An air quality survey in and around an office building in Rio de Janeiro, Brazil, helped identify several air pollution characteristics. For example, the survey found that the total amount of volatile organic compounds was much higher within the building than outside of the building. However, the total amount of acetaldehyde was higher outside of the building than inside because of the use of ethanol to power automobile driving.

Research and Development in the Physical, Engineering, and Life Sciences, Science & research, Brazil, Air Pollution Control R&D, Air pollution research, Pollution control research

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