College of Forestry and Landscape Architecture, Xinjiang Agricultural University, Urumqi, P.R. China.
College of Ecology and Environment, Xinjiang University, Urumqi, P.R. China.
Int J Phytoremediation. 2024;26(12):1981-1995. doi: 10.1080/15226514.2024.2371916. Epub 2024 Jul 9.
Potential trace elements pollution in cities poses a threat to the environment and human health. Bio-availability affects toxicity levels of potential trace elementss on organisms. This study focused on exploring the relationship between soil, plant, and atmospheric dust pollution in Urumqi, a typical city in western China. It aims to help reduce pollution and protect residents' health. The following conclusions were drawn: 1) potential trace elementss like Cr, Pb, As, and Ni are more prevalent in atmospheric dust and soil than in plants. Chromium was in the first group, Cadmium and Mercury were in the second, and Plumb, Arsenic, and Nickel were in the third. Atmospheric dust and soil exhibit a significantly higher heavy metal content than plants. For example, The atmospheric dust summary Chromium content was up to 88 mg/kg. 2) Soil, atmospheric dust, and plants have the highest amount of residual form. Residual form had the highest percentage average of 53.3%, whereas Organic matter bound form had the lowest percentage of just 7.7%. The plants contained less residual heavy metal than the soil and atmospheric dust. 3) The correlation coefficient between the carbonated form content of Cd of soil and atmospheric dust is 0.95, which is closely related. Other potential trace elements show similar correlations in their bio-available contents in soil, plants, and atmospheric dust. This study suggests that in urban area, the focus should be on converting potential trace elements into residual form instead of increasing plants' absorption of potential trace elements.
城市中潜在的微量元素污染对环境和人类健康构成威胁。生物可利用性会影响潜在微量元素对生物体的毒性水平。本研究聚焦于探索中国西部典型城市乌鲁木齐的土壤、植物和大气尘埃污染之间的关系，旨在帮助减少污染并保护居民健康。得出以下结论：1）大气尘埃和土壤中的潜在微量元素如 Cr、Pb、As 和 Ni 比植物中更为普遍。Cr 处于第一组，Cd 和 Hg 处于第二组，Pb、As 和 Ni 处于第三组。大气尘埃和土壤中的重金属含量明显高于植物。例如，大气尘埃中 Cr 的含量高达 88mg/kg。2）土壤、大气尘埃和植物中的残渣形态含量最高。残渣形态的平均百分比最高，为 53.3%，而有机质结合形态的百分比最低，仅为 7.7%。植物中残留的重金属含量低于土壤和大气尘埃。3）土壤和大气尘埃中 Cd 的碳酸盐形式含量之间的相关系数为 0.95，密切相关。其他潜在微量元素在土壤、植物和大气尘埃中的生物可利用含量方面也表现出类似的相关性。本研究表明，在城市地区，重点应放在将潜在微量元素转化为残渣形态上，而不是增加植物对潜在微量元素的吸收。
