Application of index of geo-accumulation and enrichment factor in assessment of heavy metal contamination in soil of tangtou section on No.324 main roads

In this paper,Assessment of heavy-metal contamination in soil of Tangtou section on No.324 main roads was conducted respectively by the method of index of geo-accumulation an d enrichment factor.The result revealed that both methods could make a scientific assessment of contamination caused by human and could gain similar assessing conclusion.During the assessment,a contrast an analysis of heavy-metal contamination level is performed by respectively adopting the value of geo-chemistry background and the value of soil background of Fujian province;it showed that there was no distinct difference in grading between the two values(besides Cd).Content of element Cd was obviously increased due to humans activities,but content of element Cr and Zn ranked in zero-leve1.