Influence of physical and chemical characteristics of soils in the hydrobiogeochemical cycle of mercury in the Rio Aracá - AM

Química Nova

Rocha, Julio Cesar¹  Universidade Federal de Alagoas, Arapiraca, Brasil¹  Santos, Ademir dos¹  Cordovil, Mirela Cristina de Oliveira¹  Universidade Estadual Paulista, Araraquara, Brasil¹  Universidade Federal de São Carlos, Sorocaba, Brasil¹  Universidade Estadual do Amazonas, Manaus, Brasil¹  Botero, Wander Gustavo¹  Oliveira, Luciana Camargo de¹  Silva, Heliandro Cordovil da¹ 

关键词: soil;    mercury;    Aracá;    - AM River.;   

DOI  :  10.1590/S0100-40422011000800002

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

The region of Aracá River (Middle and Upper Rio Negro-AM) has peculiar characteristics, having soils with atypical profile and high organic matter contents in great deep. The levels of aluminum and iron in the soil samples increased as a function of depth and concentrations of mercury ranged from 0.097 to 0.964 µg g-1. Statistical analysis showed the degree of similarity between soil samples collected. The highest concentrations of mercury in soil samples are directly related to soil higher content of organic matter, directly influencing the fate and bioavailability of mercury species to the environment.

【 授权许可】

Unknown