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生态学杂志 ›› 2021, Vol. 40 ›› Issue (3): 804-812.doi: 10.13292/j.1000-4890.202103.001

• 研究报告 • 上一篇    下一篇

沈阳市住宅区小区与街道灰尘重金属污染评价

李苹苹1,2,苗纯萍1,3,陈玮1,2,3,于帅1,3,胡远满1,2,何兴元1,2,3*     

  1. （1中国科学院沈阳应用生态研究所， 中国科学院森林生态与管理重点实验室， 沈阳 110016； 2中国科学院大学， 北京 100049； 3中国科学院沈阳树木园， 沈阳 110016）
  • 出版日期:2021-03-10 发布日期:2021-03-17

Assessment of heavy metal pollution in dust of residential quarters and streets in Shenyang.  

LI Ping-ping1,2, MIAO Chun-ping1,3, CHEN Wei1,2,3, YU Shuai1,3, HU Yuan-man1,2, HE Xing-yuan1,2,3*   

  1. (1CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; 2University of Chinese Academy of Sciences, Beijing 100049, China; 3Shenyang Arboretum, Chinese Academy of Sciences, Shenyang 110016, China).
  • Online:2021-03-10 Published:2021-03-17

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摘要： 城市住宅区是人类活动的重要场所，与居民的日常生活紧密相关。为了解沈阳市住宅区小区与街道灰尘中重金属污染的空间分布，采集了不同住宅区小区与街道的灰尘样品，分析了灰尘中重金属的含量，并使用富集因子和地累积指数评估了其污染程度。结果表明，沈阳市灰尘中重金属Cr、Cd、Cu、Pb和Zn的平均含量均超过辽宁省表层土壤元素背景值。单因素方差分析表明，街道灰尘中重金属Cu、Fe、Mn和Zn的空间分布具有显著性差异，而小区灰尘中重金属Cd、Cr、Fe、Mn和Pb在空间上具有显著性差异。重金属Cd、Zn和Pb的平均污染水平较高，其中小区内Cd和Zn的污染程度高于街道。沈阳市不同方位住宅区灰尘中重金属的污染水平介于轻度污染至中度污染之间。

关键词: 灰尘, 重金属, 单因素方差分析, 富集因子, 地累积指数

Abstract: Urban residential area is an important place for human activities and is closely related to the daily life of residents. To understand the spatial distribution of heavy metals in the dust of residential districts and streets in Shenyang, we analyzed heavy metal concentrations, and assessed the pollution degree using enrichment factors and geoaccumulation indices by collecting dust samples in residential districts and streets. The results showed that the average concentrations of Cr, Cd, Cu, Pb and Zn in the dusts exceed the background value of surface soil elements in Liaoning Province. The concentrations of heavy metals Cu, Fe, Mn and Zn in the dust of streets and that of Cd, Cr, Fe, Mn and Pb in residential districts showed significant spatial variations. Among all the investigated heavy metals, Cd, Zn, and Pb were the most serious pollutants. The Cd and Zn concentrations in the residential districts were significantly higher than those in the streets. The pollution levels of heavy metals in the residential areas of Shenyang ranged from light to moderate degrees.

Key words: dust, heavy metal, one-way ANOVA, enrichment factor, geoaccumulation index.

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