秋季呼和浩特市主要绿化树种叶面滞尘重金属含量分布特征  

Distribution of Heavy Metal Content in Leaf Dust of Landscape Trees at Autumn in Hohhot

作　　者：杨娜 包海[1,2] 刘智远 高星星 丁艳旭 YANG Na;BAO Hai;LIU Zhi-yuan;GAO Xing-xing;DING Yan-xu(College of Chemistry and Environmental Science,Inner Mongolia Normal University,Hohhot 010022,China;Inner Mongolia Key Laboratory of Environmental Chemistry,Hohhot 010022,China)

机构地区：[1]内蒙古师范大学化学与环境科学学院,内蒙古呼和浩特010022 [2]内蒙古自治区环境化学重点实验室,内蒙古呼和浩特010022

出　　处：《内蒙古师范大学学报（自然科学版）》2022年第6期622-629,共8页Journal of Inner Mongolia Normal University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(21667021);内蒙古师范大学研究生创新基金资助项目(CXJJS20111)。

摘　　要：为揭示秋季呼和浩特市主要绿化树种叶面滞尘重金属含量分布特征,于2021年9月,以不同功能区主要绿化树种国槐、榆树和新疆杨为研究对象,使用ICP-MS测定了其叶面滞尘中Cd、Pb、As、Cr、Cu、Ni和Mn等7种重金属元素。结果表明:(1)3种绿化树种叶面滞尘重金属含量顺序为国槐>榆树>新疆杨;不同功能区叶面滞尘重金属含量顺序为工业区>文教区>行政区>居民区>商业区;(2)同种绿化树种不同功能区其叶面滞尘重金属含量有所不同,国槐为工业区>居民区>商业区>行政区>文教区;榆树为工业区>文教区>行政区>居民区>商业区;新疆杨为文教区>工业区>行政区>居民区>商业区;(3)不同绿化树种叶面滞尘重金属含量有所不同,国槐叶面易滞尘Pb、Cr、Cu和Mn等重金属;榆树叶面易滞尘Cd、As、Ni等重金属;(4)国槐、榆树和新疆杨的叶面滞尘量与其叶面滞尘Pb、Cr和Mn含量呈正相关。研究结果将为建立呼和浩特市环境空气重金属污染的生物监测法提供科学数据。In recent years,the concern has been growing over the pollution of the ambient air by heavy metals.To reveal the distribution characteristic of heavy metal content in leaf dust retention of landscape trees in Hohhot at autumn,7 kinds of heavy metal elements(Cd,Pb,As,Cr,Cu,Ni and Mn)in leaf dust retention of landscape trees such as Sophora japonica,Ulmus pumila and Populus alba var.pyramidalis were determined by ICP-MS in September 2021.The results showed that(1)the heavy metal content in leaf dust retention of the three species,Sophora japonica>Ulmus pumila>Populus alba var.pyramidalis,and also it was different in different functional areas,namely,industrial area>institutes and colleges district>administrative region>residential area>commercial district;that(2)for same species,the heavy metal content of was also different in different functional areas,such as,in Sophora japonica,industrial area>residential area>commercial district>administrative region>institutes and colleges district,in Ulmus pumila,industrial area>institutes and colleges district>administrative region>residential area>commercial district,and in Populus alba var.pyramidalis,institutes and colleges district>industrial area>administrative region>residential area>commercial district;that(3)The leaf surface of Sophora japonica was more commonly to catch heavy metals such as Pb,Cr,Cu and Mn,Ulmus pumila leaf surface was more commonly to catch dust Cd,As,Ni and other heavy metals;that(4)the leaf dust retention of Sophora japonica,Ulmus pumila,Populus alba var.pyramidalis was positively correlated with the content of Pb,Cr and Mn in leaf dust retention.The results provided fundamental data for the establishment of biological method in monitoring heavy metal pollution in Hohhot.

关 键 词：呼和浩特市 绿化树种 叶面滞尘量 重金属含量 

分 类 号：X13[环境科学与工程—环境科学]