Cerium dioxide and zinc oxide nanoparticles alter the nutritional value of soil cultivated soybean plants

The aim of this study was to determine nutrient elements in soybean (Glycine max) plants cultivated in farm soil amended with nCeo(2) at 0-1000 mg kg(-1) and nZnO at 0-500 mg kg(-1). Digested samples were analyzed by ICP-OES/MS. Compared to control, pods from nCeo(2) at 1000 mg kg(-1) had significantly less Ca but more P and Cu, while pods from 100 mg kg(-1) nZnO had more Zn, Mn, and Cu. Plants treated with nZnO showed significant correlations among Zn, P, and S in pods with Zn in roots. Correlations among pod Zn/root Zn was r = 0.808 (p <= 0.01) and pod P/root P was r = 0.541 (p <= 0.05). The correlation among pod S/root S was r = -0.65 (p <= 0.01). While nCeO(2) treatments exhibited significant correlations between pod Ca/root Ca (r = 0.645, p <= 0.05). The data suggest that nCeO(2) and nZnO alter the nutritional value of soybean, which could affect the health of plants, humans, and animals. (C) 2014 Elsevier Masson SAS. All rights reserved.