中文摘要：

通过采集312国道沿线表层土壤及服务区灰尘样品,研究了312国道沿线表层土壤、灰尘重金属污染现状,并探讨了影响因素.研究发现312国道沿线表土中Pb、Zn、Cu污染较严重,Ni、Mn、Cr污染较轻.良田、宝天公路采样点Pb、Zn污染程度最高,为强污染-极强污染,柳园Pb、Zn污染次之为中强度污染,其余采样点均为无污染至中度污染.服务区窗台灰中Pb、Zn、Cu等重金属污染严重,三门峡、平顶山、北龙口、良田等地点Zn元素的Igeo值〉10.Ni污染较轻,Igeo值均〈2.312国道沿线表土中Pb、Zn、Cu、Mn重金属污染和窗台灰中Pb、Cr重金属污染均与停车场地面灰中重金属污染相关性较高,推测主要受汽车尾气和轮胎摩擦碎屑污染,其余各元素如Ni等还受到其它污染源影响.重金属污染受汽车活动影响较大。

英文摘要：

With the sample of roadside soil and dust from service areas along G312 highway,the current situation of heavy metal contamination and the influencing factors were studied.The pollutions of Pb,Zn,Cu in roadside soil was high,while,Ni,Mn,Cr pollutions was low.The contents of Pb,Zn in Liangtian and Baoshan-road are the highest,and are in level of serious pollution to most serious pollution.Liuyuan take the second place,with Pb,Zn in level of in the mediate pollution.However,heavy metals in the other places are all under the level of moderate pollution.The contents of heavy metals in the window dust from many service areas are higher than in roadside soil.The Igeo value of Zn in places of Sanmenxia,Pingdingshan,Beilongkou,Liangtian are all 10,in the level of most serious pollution.Ni pollution is low,Igeo 2.Pollution sources of the Pb,Cr in the roadside soil and dust of service areas along G312 highway were suspectal to be the same：same vehicle exhaust and friction chippings out of the tyre.Other elements may come from other pullution sources.Vehicle activity in the key influencing factor for heavy metal contamination.