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Mostrando ítems 41-50 de 2023
A Química Ambiental no BrasilEnvironmental chemistry in Brasil
(Sociedade Brasileira de Química, 2002)
Determination of organic acids of low molecular weight and phosphate in soil by capillary electrophoresis
(2001)
Capillary zone electrophoresis with indirect UV detection at 254 nm was found to be suitable for the determination of organic acids and phosphate in aqueous extracts of soil. The best support electrolyte solution was found ...
Boro em trevo: eficiência de extratores e efeito sobre atributos químicos do solo, em área com e sem corte da parte áerea submetida a níveis de b
(Universidade Tecnológica Federal do ParanáPato BrancoPrograma de Pós-Graduação em Agronomia, 2011)
Recently studies have been directed to the importance of micronutrients in plant
mineral nutrition. However, there is great difficulty in quantifying micronutrients by
chemical analysis of soil due to low reliability of ...
Radon emissions related to the granitic Precambrian shield in southern Brazil
(2013-03-01)
The equivalent uranium (eU) activity concentration was analysed in selected granite samples at several sites in Porto Alegre, Southern Brazil, to obtain information on the radon (222Rn) generation by the aquifer rock ...
Radon emissions related to the granitic Precambrian shield in southern Brazil
(2013-03-01)
The equivalent uranium (eU) activity concentration was analysed in selected granite samples at several sites in Porto Alegre, Southern Brazil, to obtain information on the radon (222Rn) generation by the aquifer rock ...
An eco-friendly infrared method for rapid soil sample preparation for multielemental determination by microwave induced plasma atomic emission spectrometry
(Elsevier Science, 2020-12)
In order to attain Sustainable Development Goals (SDGs), soils mineral assessment is of great importance, since even small changes in their concentration levels, either due to natural or anthropogenic factors, can affect ...