en Original Article <p style="text-align: justify;"><span style="font-family: times new roman;"><strong>Background:</strong> The present study investigated the impact of land use on health risks (cancerous and non-cancerous) of heavy metals in soil along the Hemmat Highway of Tehran, Iran.</span></p> <p style="text-align: justify;"><span style="font-family: times new roman;"><strong>Materials and Methods:</strong> A total of 28 soil samples were collected in August 2014 from the roadside soil of the Hemmat Highway. The collected samples were air-dried and digested, and then, analyzed for heavy metals using an atomic absorption spectrophotometer (AAS). Non-carcinogenic and carcinogenic health risks were calculated for different land uses (green space, residential area, under construction, and natural) along the Hemmat Highway.</span></p> <p style="text-align: justify;"><span style="font-family: times new roman;"><strong>Results:</strong> The hazard index (HI) of Pb, Zn, Cd, Cr, and Ni was, respectively, 0.28, 0.19 &times; 10^-2, 0.032, 0.043, 0.006 for children, and was 0.037, 0.24 &times; 10^-3, 0.014, 0.012, 0.76 &times; 10^-3 for adults. Carcinogenic risk of metals was analyzed for Cd, Cr, and Ni. The carcinogenic risk <strong>&lrm;</strong>of Pb, Ni, Zn, and Cd was 0.144 &times; 10^-7, 0.427 &times; 10^-6, and 9.41 &times; 10^-2, respectively.</span></p> <p style="text-align: justify;"><span style="font-family: times new roman;"><strong>Conclusions: </strong>The carcinogenic risk levels of the three studied metals were < 10^-6 with higher values attributed to Cr&lrm;. HIs for all metals were lower than their threshold values, indicating nil health hazards. The results of risk assessment showed that the highest risk value was related to ingestion of Pb.</span></p> Health Risk,Land,Soil,Heavy Metal, 241 251 http://johe.rums.ac.ir/browse.php?a_code=A-10-187-1&slc_lang=en&sid=1 A Movafagh Afsaneh_movafagh@yahoo.com 22400319475328460011733 22400319475328460011733 No Dept. of Environmental and Energy, Science and Research Branch, Islamic Azad University, Tehran, Iran. Science and Research Branch, Islamic Azad University N Mansouri nmansourin@yahoo.com 22400319475328460011734 22400319475328460011734 Yes Dept. of Environmental and Energy, Science and Research Branch, Islamic Azad University, Tehran, Iran. Science and Research Branch, Islamic Azad University F Moattar famoattar@yahoo.com 22400319475328460011735 22400319475328460011735 No Dept. of Environmental and Energy, Science and Research Branch, Islamic Azad University, Tehran. Iran. Science and Research Branch, Islamic Azad University AR Vafaeinejad a_vafaei@srbiau.ac.ir 22400319475328460011736 22400319475328460011736 No Dept. of Remote Sensing and GIS, Science and Research Branch, Islamic Azad University, Tehran, Iran. Science and Research Branch, Islamic Azad University