Investigation on the adsorption of heavy metal in lead in a plane species in traffic areas in Rasht

Important heavy metals such as lead are part of the pollutants produced by vehicles and the traffic flow causes them to be released into the urban environment. In order to study the pollution rate of street margin trees and determining the traffic parameter affecting the amount of lead in plane tree of Rasht city, a case study was selected in this city from four stations on the outskirts of the city for traffic and low traffic. Traffic factors including three superficial stations based on traffic volume per day and per month and a low traffic station. The method was used to determine that 60 species of plane tree at 30 meters intervals were randomly selected from the total tree crown area to determine the amount of adsorption of heavy lead metal which was selected from each sample with amount of 10 grams to test the absorbed lead content.The results of this study showed that lead absorption by plane tree species in three stations and control station, Takhti St. Station had the highest amount of lead (29.53 ppm) than the other three stations. Therefore, the plane tree species can be a suitable type for the margin of streets in the urban area. The results of this research can be used in transportation management and urban traffic control and urban design and urban design and planting.