REMOR, MARCELO B.SAMPAIO, SILVIO C.DAMATTO, SANDRA R.CASTILHOS, ZULEICA C.STEVAUX, JOSE C.VILAS BOAS, MARCIO A.REIS, RALPHO R. dos2015-07-162015-07-162015REMOR, MARCELO B.; SAMPAIO, SILVIO C.; DAMATTO, SANDRA R.; CASTILHOS, ZULEICA C.; STEVAUX, JOSE C.; VILAS BOAS, MARCIO A.; REIS, RALPHO R. dos. Geochemistry of the upper Parana river foodplain: study of the Garças Pond and Patos Pond. <b>Journal of Radioanalytical and Nuclear Chemistry</b>, v. 305, n. 2, p. 409-418, 2015. DOI: <a href="https://dx.doi.org/10.1007/s10967-015-4021-9">10.1007/s10967-015-4021-9</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/23788.0236-5731http://repositorio.ipen.br/handle/123456789/23788The aim of this study was to investigate the temporal evolution of the supply of chemical elements to the Upper Parana´ River floodplain and identify trends in the geochemistry of its drainage basin. The primary factor that regulates the supply of chemical elements of the Upper Parana´ River floodplain is the flood pulse, which can be magnified by the El Nin˜o—Southern Oscillation. Garc¸as Pond is affected by agriculture, urbanization, discharge of industrial effluents and hydroelectric power production activities. Patos Pond is affected by sugarcane burning, gold mining, agriculture and urbanization.409-418openAccessbrazilriversfloodselementschemical analysisheavy metalslead 210sedimentslimnologyArtigo de periódico230510.1007/s10967-015-4021-931.81