Ren Hanru, Ren Jun, Tao Ling, Ren Xuechang
School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China.
Gansu Hanxing Environmental Protection Co., Ltd., Lanzhou 730070, China.
Toxics. 2025 Feb 25;13(3):158. doi: 10.3390/toxics13030158.
The potentially toxic metals in soil often cause secondary pollution of vegetables and pose a great threat to human health. Soil and vegetable samples were collected from eight different districts in the vegetable plantation base of Lanzhou city in Gansu province, and Zn, Cd, Cr, Cu, and Pb contents were determined using inductively coupled plasma atomic emission spectroscopy (ICP-AMS). The results suggested that the Cr and Zn contents of soils in the eight plantation bases were much higher than those of the other three metals. The metal contents showed significant differences among plantation bases and vegetable species, and the mean potentially toxic metal concentrations in soils exceeded background levels by 1.1~3.0 times. The accumulation of Cu in vegetables was significantly higher than that of other metals. Remarkable differences were found among the vegetables in the uptake abilities of Zn, Cd, Cr, and Cu. There were significant positive relationships between potentially toxic metal accumulation in vegetables and in soils. The results may be used to provide referential strategies and methods to minimize the impact of potentially toxic metals on human health through the consumption and cultivation of vegetables.
土壤中的潜在有毒金属常常会造成蔬菜的二次污染，并对人类健康构成巨大威胁。从甘肃省兰州市蔬菜种植基地的八个不同区域采集了土壤和蔬菜样本，并使用电感耦合等离子体原子发射光谱法（ICP-AMS）测定了锌、镉、铬、铜和铅的含量。结果表明，八个种植基地土壤中的铬和锌含量远高于其他三种金属。金属含量在种植基地和蔬菜品种之间存在显著差异，土壤中潜在有毒金属的平均浓度超过背景水平1.1至3.0倍。蔬菜中铜的积累明显高于其他金属。在锌、镉、铬和铜的吸收能力方面，不同蔬菜之间存在显著差异。蔬菜中潜在有毒金属的积累与土壤中潜在有毒金属的积累之间存在显著的正相关关系。这些结果可用于提供参考策略和方法，以通过蔬菜的消费和种植将潜在有毒金属对人类健康的影响降至最低。
