@article{paperid:1062909, author = {Karimi, Alireza and Haghnia, Gholam Hosain and Safari, Tayebeh and Haddadian, Hadi}, title = {Lithogenic and anthropogenic pollution assessment of Ni, Zn and Pb in surface soils of Mashhad plain, northeastern Iran}, journal = {Catena}, year = {2017}, volume = {157}, number = {157}, month = {October}, issn = {0341-8162}, pages = {151--162}, numpages = {11}, keywords = {Potentially toxic elements; Geochemical background; Pollution index; Ultramafic rocks}, }