Dry Deposition Removal of Carbonaceous Particles Produced by Biomass Burning in Panama
| Autor: | Daniel Suman |
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| Rok vydání: | 1989 |
| Předmět: | |
| Zdroj: | Aerosol Science and Technology. 10:131-139 |
| ISSN: | 1521-7388 0278-6826 |
| Popis: | Six dry deposition monitoring stations were positioned throughout Cocle Province (central Panama) in 1981 in order to collect particulates produced during the period of agricultural burning. The stations housed glass plates coated with a film of vaseline. Samples collected at weekly intervals were treated with acids and a mild oxidant to remove clay minerals and organic material, leaving a residue which was largely carbonized plant material (elemental carbon). The weekly elemental carbon fluxes were strongly correlated with the land area burned in the region. During the 3-month burning period, dry deposition fluxes of elemental carbon ranged from 1.5 to 7.7 × 10−5 mg C cm−2 d−1. Size distribution analyses of the carbonaceous particles indicated that most of the dry deposition elemental carbon mass was carried by particles greater than 2 μm in diameter. Submicrometer particles, while abundant in number, accounted for less than 15% of the mass. This contrasts with the importance of submicrometer elemental c... |
| Databáze: | OpenAIRE |
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