Influence of intensive agriculture on dry deposition of aerosol nutrients

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Influence of intensive agriculture on dry deposition of aerosol nutrients. / Allen, Andrew; Cardoso, AA; Wiatr, Antony; Machado, CMD; Paterlini, WC; Baker, Jacob.

In: Journal of the Brazilian Chemical Society, Vol. 21, 01.01.2010, p. 87-97.

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Allen, Andrew ; Cardoso, AA ; Wiatr, Antony ; Machado, CMD ; Paterlini, WC ; Baker, Jacob. / Influence of intensive agriculture on dry deposition of aerosol nutrients. In: Journal of the Brazilian Chemical Society. 2010 ; Vol. 21. pp. 87-97.

Bibtex

@article{7a6a37381f7f4cb384aff28427f4fe64,
title = "Influence of intensive agriculture on dry deposition of aerosol nutrients",
abstract = "A procedure is presented for quantification of sources contributing to atmospheric aerosol chemical nutrient concentrations and dry deposition fluxes. Source apportionment using principal component analysis (PCA) and multiple linear regression analysis (MLRA) was followed by application of a size-segregated particle dry deposition model. In a rural region of southeast Brazil, biomass burning, products of secondary reactions, and soil dust re-suspension explained 43%, 31% and 21% of PM2.5 mass, respectively. Re-suspension and biomass burning contributed 22% and 19%, respectively, to PM10 mass, and re-suspension accounted for approximately half of the mass of coarse particles. At least 40% of NO3--N, 20% of phosphorus and 55% of potassium deposited originated from agriculture-related emissions. Deposition to tropical forest is currently higher than the minimum under natural conditions by factors of 12.2 (N), 6.2 (P) and 2.6 (K).",
keywords = "nutrients, deposition, source apportionment, pollution, aerosols",
author = "Andrew Allen and AA Cardoso and Antony Wiatr and CMD Machado and WC Paterlini and Jacob Baker",
year = "2010",
month = jan,
day = "1",
language = "English",
volume = "21",
pages = "87--97",
journal = "Journal of the Brazilian Chemical Society",
issn = "0103-5053",
publisher = "Sociedade Brasileira de Quimica",

}

RIS

TY - JOUR

T1 - Influence of intensive agriculture on dry deposition of aerosol nutrients

AU - Allen, Andrew

AU - Cardoso, AA

AU - Wiatr, Antony

AU - Machado, CMD

AU - Paterlini, WC

AU - Baker, Jacob

PY - 2010/1/1

Y1 - 2010/1/1

N2 - A procedure is presented for quantification of sources contributing to atmospheric aerosol chemical nutrient concentrations and dry deposition fluxes. Source apportionment using principal component analysis (PCA) and multiple linear regression analysis (MLRA) was followed by application of a size-segregated particle dry deposition model. In a rural region of southeast Brazil, biomass burning, products of secondary reactions, and soil dust re-suspension explained 43%, 31% and 21% of PM2.5 mass, respectively. Re-suspension and biomass burning contributed 22% and 19%, respectively, to PM10 mass, and re-suspension accounted for approximately half of the mass of coarse particles. At least 40% of NO3--N, 20% of phosphorus and 55% of potassium deposited originated from agriculture-related emissions. Deposition to tropical forest is currently higher than the minimum under natural conditions by factors of 12.2 (N), 6.2 (P) and 2.6 (K).

AB - A procedure is presented for quantification of sources contributing to atmospheric aerosol chemical nutrient concentrations and dry deposition fluxes. Source apportionment using principal component analysis (PCA) and multiple linear regression analysis (MLRA) was followed by application of a size-segregated particle dry deposition model. In a rural region of southeast Brazil, biomass burning, products of secondary reactions, and soil dust re-suspension explained 43%, 31% and 21% of PM2.5 mass, respectively. Re-suspension and biomass burning contributed 22% and 19%, respectively, to PM10 mass, and re-suspension accounted for approximately half of the mass of coarse particles. At least 40% of NO3--N, 20% of phosphorus and 55% of potassium deposited originated from agriculture-related emissions. Deposition to tropical forest is currently higher than the minimum under natural conditions by factors of 12.2 (N), 6.2 (P) and 2.6 (K).

KW - nutrients

KW - deposition

KW - source apportionment

KW - pollution

KW - aerosols

M3 - Article

VL - 21

SP - 87

EP - 97

JO - Journal of the Brazilian Chemical Society

JF - Journal of the Brazilian Chemical Society

SN - 0103-5053

ER -