ICAR-Indian Institute of Soil Science, Nabibagh, Berasia Road, Bhopal, 462 038, India.
ICAR-Directorate of Rapeseed-Mustard Research, Sewar, Bharatpur, 321 303, India.
Environ Monit Assess. 2022 Apr 7;194(5):334. doi: 10.1007/s10661-022-09935-4.
A greenhouse research was conducted to monitor lead (Pb) translocation dynamics in spinach (Spinacia oleracea L.) mediated by nickel (Ni) application. Each of the four levels of Pb (0, 100, 150, and 300 mg/kg) and Ni (0, 100, 150, and 300 mg/kg) was applied in different combinations in the pot experiment. A fully matured spinach crop was harvested and divided into biomass samples from the roots and above ground. ICP-OES was used to determine the concentrations of Pb and Ni in the samples. The increase in Pb application rate in soil resulted in a decrease in dry matter yield of plant roots and above-ground biomass, according to the findings. Pb accumulation was also found in significant amounts in roots and above-ground biomass. Pb was accumulated in greater quantities in the spinach roots than in the above-ground biomass. Pb uptake in spinach roots and above-ground biomass decreased when high dose of Ni was applied. The Ni application in spinach crop had a negative impact on various parameters of Pb uptake, including translocation factor, bioconcentration factor, translocation efficiency, and crop removal of Pb. Pb toxicity was reduced when higher doses of Ni (100 to 300 mg/kg) were applied to Pb-contaminated soil. The findings of this study could help researchers better understand how Pb and Ni interact, as well as how to treat soil that has been contaminated by industrial wastewater containing nickel and lead.
采用温室研究方法，监测了施镍（Ni）条件下菠菜（Spinacia oleracea L.）对铅（Pb）的迁移动态。在盆栽试验中，将 Pb（0、100、150 和 300 mg/kg）和 Ni（0、100、150 和 300 mg/kg）的四个浓度水平以不同组合方式进行添加。当菠菜完全成熟时，将其收获并分为根部和地上部生物量样本。采用 ICP-OES 测定样品中 Pb 和 Ni 的浓度。研究结果表明，土壤中 Pb 施用量的增加会降低植物根部和地上部生物量的干物质产量，同时根部和地上部生物量中也大量积累了 Pb。菠菜根部积累的 Pb 量大于地上部。当施入高剂量 Ni 时，菠菜根部和地上部对 Pb 的吸收量减少。Ni 的施入对 Pb 吸收的各种参数（如迁移因子、生物浓缩系数、迁移效率和作物对 Pb 的去除率）均产生负面影响。在 Pb 污染土壤中施入较高剂量 Ni（100-300 mg/kg）可降低 Pb 毒性。本研究结果有助于研究人员更好地了解 Pb 和 Ni 的相互作用方式，以及如何处理含镍和铅的工业废水污染的土壤。
