Emissões naturais e antrópicas de metais e nutrientes para a bacia inferior do rio de contas, Bahia

Química Nova

Francisco C. F. De Paula¹  Luiz Drude De Lacerda²  Rozane V. Marins²  José E. Aguiar²  Álvaro R. C. Ovalle²  Cézar A. T. Falcão Filho² 

[1] ,Universidade Estadual de Santa Cruz Departamento de Ciências Agrárias e Ambientais Ilhéus BA ,Brasil

关键词: emission factors;    pollutants;    Rio de Contas estuary;   

DOI  :  10.1590/S0100-40422010000100014

来源: SciELO

【 摘 要 】

Emission factors of anthropogenic activities and natural processes were used to estimate nutrients and metals loads to the Contas River lower basin, Southern Bahia, Brazil. Among natural sources, emission from soil leaching is larger for N, Cu and Pb. Atmospheric deposition is the major natural source of P, Zn, Cd and Hg. Among anthropogenic sources, agriculture is the major source of N, Cu and P. Urban sources are the major contributors to the other elements. Present anthropogenic land uses are already responsible for 78 and 99% of total N and P loads and about 50% of total Cu and Hg.

【 授权许可】

CC BY-NC   
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