LOSSES OF (Ca, Mg) MACRONUTRIENTS IN THE IVAÍ RIVER BASIN, STATE OF PARANÁ - BRAZIL

  • Dirseu Galli UEM
  • Ervim Lenzi UEM
  • Luzia Otília Bortotti Fávero UEM
  • Eduardo Bernardi Luchese UNIOESTE
  • Déborah Maria Corrêa Guiraud UFPR

Abstract

Losses of CaT, and MgT (T = total), macronutrients carried away from Ivaí River basin, an affluent of Paraná River, are analyzed. The samples were collected at the Fluviosedimentometric station of Paraíso do Norte, state of Paraná. Water samples were collected monthly for five running days to determine CaT, and MgT. Temperature, pH and O2(dis) of the samples as well as the fluviometric level at the Ivaí River were measured at the collecting moment. Atomic (flame) absorption spectometric technique was used to determine CaT and MgT after the preconcentration and digestion of the samples. The experimental results in terms of global intervals of the monthly average values and the global average values were respectively: a) -0.090 - 5.75 and 1.63 (mg.L-1) for CaT; 0.070 - 2.65 and 1.44 (mg.L-1) for MgT; 1.89 - 8.40 and 5.43 (mg.L-1) for 02(dis); b) 16.0 - 30.8 and 24.6 (ºC) temperature; 5.18 - 8.50 and 7.15 pH. The statistical analysis of data variance showed that the macronutrients contents carried away from the Ivaí River at the level of 5% and 1% of significance are significantly different, thus showing the influence of sample (monthly) temporality.

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Author Biography

Dirseu Galli, UEM
Possui graduação em Licenciatura Em Quimica pela Universidade Estadual de Maringá (1983). Atualmente é quimico da Universidade Estadual de Maringá. Tem experiência na área de Química, com ênfase em Instrumentação Analítica, atuando principalmente nos seguintes temas: metais pesados, meio ambiente, quimica analitica, peixes e água doce Currículo Lattes
Published
2008-07-28
Section
Chemistry