چکیده مقاله
Soil Sample were collected from four sites in the urban roadsides of Isfahan , Iran At each site , samples were collected at distance of 0 5, 1, 2, 3, 4, 5, 6, 7, 7, 8, 10, 15, 20, 30, 40, 50m from road curbs and at depths of 0 5 and 50 55 and 50 55cm Samples were extracted by concentrated nitric and hydrofluoric acids and total concentrations of cadmium and lead values were obtained by Flam Atomic Absorption Spectrophotometer FAAS Observed results showed that traffic emissions were the main source of the pollution Roads were categorized into the high and low traffic volumes The average concentrations of pb and Cd were 126 82 and 2 41 mg/kg soil , and for sites with high traffic volume were 183 and 2 57 mg/kg soil and for sites with low traffic volume were 70 64 and 2 25 mg/kg respectively Pb concentrations declined rapidly by increasing distance from roads With increase in soil depth, the concentrations decreased but the trend of decreasing is completely different from what was imagined and high levels of pb were observed in depths Although cadmium values were near to background level, it showed a similar trend like what was seen about pb concentrations So it needs to study more about interaction of urban traffic and capability of its polluting the environment
کلیدواژهها
نویسندگان
S.Samani Majd
Environmental engineering MSc Student
A.Taebi
Associate professor
M.Afyuni
Associate professor
شیوه ارجاع
S.Samani Majd, and A.Taebi, and M.Afyuni, ,1385,Lead and Cadmium Distribution in Urban Roadside Soils of Isfahan Iran,7th International Congress on Civil Engineering,Tehran
ارائهشده در
مجموعه مقالات هفتمین کنگره بین المللی مهندسی عمران17 اردیبهشت 1385 · تهران