Influence of a bio-based fertilizer on pharmaceuticals uptake by wheatgrass in soil

Le résumé fourni par la source

Establishing linear or nonlinear relationships for the uptake of both neutral and ionized pharmaceuticals by crops with key parameters is crucial for understanding the variations in uptake behavior among pharmaceuticals, yet it remains highly challenging. In this study, greenhouse experiments were conducted using wheatgrass ( Triticum aestivum ) grown in Finnish soil without ( FS ) and with a BBF ( FO ), spiked with seventeen neutral and ionized pharmaceuticals, to explore these relationships and investigate the impact of BBFs on their uptake. For the first time, a linear model revealed a significant correlation between BCF spw (bioaccumulation concentration factors based on soil pore water) and both half-life and solid-water distribution coefficients ( K d ) of studied pharmaceuticals in soil. The correlation varied between compounds with short half-lives (<14 days; R 2 =0.73) and those with long half-lives (>14 days; R 2 =0.70). The coefficient ratios of K d to half-life in the model were 3.4 and 14.7 (g/ml)⋅day for compounds with long and short half-lives, respectively, suggesting a predominant influence of sorption of compounds on their bioaccumulation in wheatgrass compared to persistence. BBF significantly enhanced their sorption, thereby reducing pharmaceutical uptake by plants despite increased persistence. These findings suggest BBFs may be a promising tool to mitigate pharmaceutical accumulation in crops. • BBF reduced the uptake capacity of pharmaceuticals by wheatgrass in soil. • Established linear correlation of concentration factors for ionized pharmaceuticals. • Sorption affinity reduced bioaccumulation in wheatgrass more than persistence.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.