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Quantificação de elementos potencialmente tóxicos presentes em diferentes cultivares de grãos de soja e milho comercializados na região Noroeste do Paraná

2013; UNIVERSIDADE ESTADUAL DO OESTE DO PARANÁ; Volume: 12; Issue: 3 Linguagem: Inglês

10.18188/sap.v12i3.6548

1983-1471

Cristina Lorena Massocatto, Kristiany Moreira Diniz, Jaqueline Fonseca Bolson, Affonso Celso Gonçalves, Douglas Cardoso Dragunski,

Plant Micronutrient Interactions and Effects

800x600 Normal 0 false false false EN-US X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:Tabela normal; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:Times New Roman,serif;} Soybean and corn are crops that are among the most planted in the northwest of Parana , in this way , a study of some micronutrients that are essential for the growth of these plants is necessary, because even in small quantities , are considered essential elements for development of these plants and also to the health of human beings. Therefore, this study had the purpose of quantifying Fe, Cu, Zn, Cr, Mn, Ni, Na and Pb within different soybean and corn cultivars commercialized in the northwest of the state of Parana. Samples were obtained from the Cooperativa Agropecuaria Goioere (COAGEL) – located in the city of Umuarama, northwest of Parana. Thirty-six cultivars of corn and fourteen of soybean were analyzed. First, samples were dried at 100oC, grinded and sifted. The wet digestion was used with nitric acid and hydrogen peroxide . All samples showed the metals Fe, Zn, Cu, Cr, Mn and Na . It was found that the amount of mineral contents varied enough for the different cultivars and higher concentrations were found in samples of soybean in the case of metals Fe , Cu, Mn and Na as the corn had higher concentrations of Cr and Zn . With respect to Cr, it could not be stated which species presents (III or VI), and cautious should be taken whether ingesting such grains. The correlation among the metals was also evaluated, and the correlations were higher for the metals within soybean in relation to those of corn. 800x600 Normal 0 false false false EN-US X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:Tabela normal; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:Times New Roman,serif;} Key-words: seeds, metals, atomic absorption.