To investigate the interaction of zinc oxide nanoparticles (ZnO NPs) with fly ash soil (FAS) for the reduction of metals from FAS by Parthenium hysterophorus were studied. The average accumulation of metals by P. hysterophorus stem were Fe 79.6%; Zn 88.5%; Cu 67.5%; Pb 93.6%; Ni 43.5% and Hg 39.4% at 5.5 g ZnO NP. The concentration of ZnO NP at 1.5 g did not affect the metals accumulation, however at 5.5 g ZnO NP showed highest metal reduction was 96.7% and at 10.5-15.5 g ZnO NP of 19.8%. The metal reduction rate was R max for Fe 16.4; Zn 21.1; Pb 41.9; Hg 19.1 was higher than Ni 6.4 and Cu 11.3 from the FAS at 5.5 g ZnO NP whereas, the reduction rate of Pb showed highest. With doses of 5.5 g ZnO NP the biomass increased upto 78%; the metal reduced upto 98.7% with the share of 100% ZnO NP from FAS. Further investigation with phytotoxicity the plant reactive oxygen species (ROS) production were affected due was mainly due to the recovery of metals from FAS (R2 = 0.99).

中文翻译：

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氧化锌纳米颗粒与粉煤灰土壤的生物利用性，用于Parthenium hysterophorus修复金属。

为了研究氧化锌纳米颗粒（ZnO NPs）与粉煤灰土壤（FAS）的相互作用，研究了hen粉草从FAS还原金属的方法。斜纹假单胞菌茎中金属的平均积累量为Fe 79.6％。锌88.5％; 铜67.5％; 铅93.6％; 在5.5 g ZnO NP下，Ni为43.5％，Hg为39.4％。ZnO NP的浓度为1.5 g不会影响金属的积累，但是5.5 g ZnO NP的最高金属还原率为96.7％，而10.5-15.5 g ZnO NP的金属还原率为19.8％。Fe 16.4的金属还原速率为R max。锌21.1; 铅41.9; 在5.5 g ZnO NP下，Hg 19.1高于FAS的Ni 6.4和Cu 11.3，而Pb的还原率最高。使用5.5 g ZnO NP的剂量，生物量增加了78％。FAS中100％的ZnO NP占金属的比例高达98.7％。