5 documents found, page 1 of 1

Prospective scenarios for water sustainability in the São Francisco River Basin

Expanding water demands and increasing uncertainties associate with water availability in the context of climate change are drivers of future development scenarios in water management of river basins. Water limitations can be particularly important in developing countries, where agriculture and livestock constitute the basis of the economy. Although many researchers have dealt with quantification of water, the ...

Metal concentrations, fluxes, inventories and chronologies in sediments from Se...

Three sediment cores were sampled at Sepetiba bay and four cores at Ribeira bay, Rio de Janeiro State, Brazil. Sedimentation rates were determined applying 210Pb dating. In the Ribeira Bay, the sedimentation rate increases in the direction from sampling point RB1 (0.15 cm y−1), in the inner part of the bay, to 0.34 cm y−1 in the sampling point RB4, close to its entrance. For the Sepetiba Bay, two sedimentation ...

Mercury in soils and sediments from gold mining liabilities in Southern Amazonia

The 1980–1990 Amazonian gold rush left an enormous liability that increasingly has been substituted by developing fish aquaculture. This work aimed at the identification of the mercury levels in the environment, associated with fish farms located in the North of Mato Grosso State, Southern Amazon. Sediment and soil samples were analyzed for total organic carbon and total mercury. Results indicate that the chemi...

Mercury in soils and sediments from gold mining liabilities in Southern Amazonia

Submitted by Guilherme Lemeszenski (guilherme@nead.unesp.br) on 2013-08-22T18:48:39Z No. of bitstreams: 1 S0100-40422007000400003.pdf: 334187 bytes, checksum: 03403370e5365cefa88a353595eedd20 (MD5); Made available in DSpace on 2013-08-22T18:48:39Z (GMT). No. of bitstreams: 1 S0100-40422007000400003.pdf: 334187 bytes, checksum: 03403370e5365cefa88a353595eedd20 (MD5) Previous issue date: 2007-08-01; Made availabl...

Combined SEM/AVS and attenuation of concentration models for the assessment of ...