摘要
为了解研究区域土壤环境质量现状与污染特征,建立了“源-途径-受体”布点采样地块筛选模型,选取26块绿地,检测197个土壤样品和26个土壤肥力样品,分析60项环境质量指标与6项肥力指标。结果表明,7种金属、3种VOCs、9种SVOCs、石油烃有检出,1个样品苯并(a)芘超标。研究区域公共绿地土壤环境质量总体较好,但人为扰动已对绿地土壤环境质量产生影响,污染物分布规律为:(1)表土重金属浓度最大值、平均值普遍高于下层;(2)VOCs检出种类少、浓度低、检出率低;(3)SVOCs以PAHs为主,PAHs在表土中的检出数量多于下层,但浓度低于下层;(4)石油烃表土最小值、最大值均大于下层。基于此,从人体健康保护等角度提出风险控制管理措施。
In order to understand the current status of soil environmental quality and pollution char-acteristics in the study area,a source-pathway-acceptor screening model was established.26 green spaces were selected,197 soil samples and 26 soil fertility samples were tested,and 60 environ-mental quality indexes and 6 fertility indexes were analyzed.The results showed that 7 metals,3 VOCs,9 SVOCs and petroleum hydrocarbons were detected,and 1 sample exceeded benzo(a)py-rene standard.The soil environmental quality of the public green spaces in the study area was gen-erally good,but anthropogenic disturbance had affected it.The distribution of pollutants was as follows:(a)The maximum and average concentration of heavy metals in the topsoil were general-ly higher than those in the lower layer.(b)Few VOCs were detected,their concentration were low and the detection rate was low.(c)The SVOCs were dominated by PAHs,and the detection number of PAHs in the topsoil is more than that in the lower layer,but the concentration is lower than the lower layer.(d)The minimum and maximum values of petroleum hydrocarbons in top-soil were higher than the lower layer.Based on these,risk control and management measures were proposed from the perspective of human health protection.
作者
王贺亚
Wang Heya(Shanghai Greenment Environmental Technology Co.LTD.,Shanghai 200001,China)
出处
《河北环境工程学院学报》
CAS
2024年第1期71-76,共6页
Journal of Hebei University of Environmental Engineering
关键词
大型城市
公共绿地
土壤污染防治
人体健康风险
模型构建
large city
public green spaces
soil pollution control
human health risks
model construction
