This study was conducted to understand the effect of silver nanoparticles (Ag NPs) on soil mobility and plant uptake of heavy metals present in wastewater irrigation systems. Radish (Raphanus sativus) was grown in pots under controlled environment, irrigated with synthesized wastewater containing various heavy metals, with and without silver nanoparticles. Soil samples were collected at 30, 45, 51, and 56 days after seeding. Radish was harvested on day 57, and different plant parts (peel, flesh, stem, and leaf) were sampled. Presence of silver nanoparticles in wastewater led to increased (p < 0.05) uptake of several heavy metals (chromium, copper, iron, lead, and zinc) by different plant parts. However, no significant differences were observed in soil metal concentrations between the two treatments. The results indicate that presence of nanoparticles in wastewater can facilitate heavy metal uptake by wastewater irrigated food crops, and thus pose a potential health risk for humans.

本研究旨在了解银纳米粒子 (Ag NPs) 对土壤流动性和植物对废水灌溉系统中重金属的吸收的影响。萝卜 ( Raphanus sativus ) 在受控环境下种植在盆中，用含有各种重金属的合成废水灌溉，有或没有银纳米颗粒。在播种后 30、45、51 和 56 天收集土壤样品。在第 57 天收获萝卜，并对不同的植物部分（果皮、果肉、茎和叶）进行取样。废水中银纳米颗粒的存在导致（p < 0.05) 植物不同部位对几种重金属（铬、铜、铁、铅和锌）的吸收。然而，两种处理之间的土壤金属浓度没有观察到显着差异。结果表明，废水中纳米颗粒的存在可以促进废水灌溉粮食作物对重金属的吸收，从而对人类构成潜在的健康风险。