摘要
为了解宿州市宿州大道两侧土壤重金属污染的程度,进而对道路土壤重金属进行生态评价,本文选取了宿州大道两侧比较有代表性的路段,设置了29个采样点,并对土壤进行了采样和分析。对处理好的样品压片进行了XRF荧光光谱仪的实验,并对其进行重金属元素含量分析、负荷指数分析和污染评价。样品的分析结果表明:8种重金属元素的变化率均高于安徽土壤背景值,其中,Cu的变化率高于44.0%,Co的变化率高于30%,两种元素的平均分布存在明显的不同。此外,Fe、Zn、Mn、Pb的含量均高于安徽土壤背景值,一些地方的Cu、Cr、Co含量也高于安徽土壤背景值。污染负荷指数表明:宿州大道该段两侧总体来说属于中等污染范围,部分地点属于无污染范围,但是在道路两侧不同采样距离中,重金属污染负荷指数变化趋势相反,即随着距离的增大,污染负荷指数减小,说明宿州大道两侧土壤环境质量受人类活动的影响作用明显。
In order to understand the degree of heavy metal pollution in the soil on both sides of Suzhou Avenue in Suzhou City and conduct an ecological evaluation of heavy metals in road soil, we selected representative sections on both sides of Suzhou Avenue, set up 29 sampling points, and conducted soil sampling and analysis. The processed samples were subjected to XRF fluorescence spectrometer experiments, and heavy metal element content analysis, load index analysis, and pollution evaluation were conducted. The analysis results of the samples show that the change rates of the eight heavy metal elements are all higher than the background values of the soil in Anhui. Among them, the change rate of Cu is higher than 44.0%, and the change rate of Co is higher than 30%. There is a significant difference in the average distribution of the two elements. In addition, the content of Fe, Zn, Mn, and Pb is higher than the background value of Anhui soil, and the content of Cu, Cr, and Co in some places is also higher than the background value of Anhui soil. The pollution load index indicates that both sides of Suzhou Avenue are generally within the moderate pollution range, and some locations are within the pollution-free range. However, in different sampling distances on both sides of the road, the trend of heavy metal pollution load index changes is opposite, that is, with the increase of distance, the pollution load index decreases, indicating that the soil environmental quality on both sides of Suzhou Avenue is significantly influenced by human activities.
出处
《自然科学》
2023年第4期598-606,共9页
Open Journal of Nature Science
