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O objetivo deste trabalho foi avaliar a absorção e a capacidade de translocação de metais pesados do solo para os grãos de soja e arroz. O experimento foi realizado em casa de vegetação, em Latossolo Vermelho distroférrico, proveniente de Município de Paulínia, SP. As amostras de solo foram coletadas em sete pontos e organizadas em função da distância de uma fábrica emissora de poluente. O delineamento utilizado foi o inteiramente casualizado, com quatro repetições. Raízes, parte aérea e grãos foram submetidos à digestão por via úmida. A concentração dos metais pesados foi determinada por ICP-OES. Os teores de cádmio e cobre no grão estiveram em níveis adequados para ambas as culturas, enquanto os teores de manganês e zinco apresentaram-se em excesso, tendo acompanhado os níveis de contaminação do solo, com possibilidade de atingir níveis mais altos da cadeia trófica. As raízes limitaram a translocação de cádmio, cobre, ferro e chumbo para a parte aérea de ambas as culturas. Mesmo com a translocação limitada pelas raízes, o chumbo apresentou-se em altos teores nos grãos de soja, e pode, também, como o manganês e o zinco, atingir a cadeia alimentar. The aim of this work was to evaluate the absorption and capacity of translocation of heavy metals from the soil to rice and soybean grains. Experiment was carried out in a greenhouse using a dystrophic Typic Hapludox soil from the district of Paulínia, SP. Soil samples were collected in seven different points and were organized according to the distance from a factory, source of pollution. The experimental design used was the completely randomized, with four replications. The roots, aerial leaves and grains were submitted to humid digestion. The concentrations of heavy metals were determined by ICP-OES. Cadmium and copper concentrations in the grains were at normal levels for both cultures, however manganese and zinc concentrations were in excess, according to the levels of soil contamination, possibly being able to reach top trophic levels. The roots limited the translocation of cadmium, copper, iron and lead to the aerial parts of both cultures. Although the translocation of lead was also limited by the roots, it was present in high concentrations in soy grains and, well as manganese and zinc, it can reach the food chain

Concentração de metais pesados em grãos de plantas cultivadas em solo com diferentes níveis de contaminação