
Contaminated soil amendment by diatomite: chemical fractions of zinc ...
Diatomite characterization and soil physicochemical analyses. The soil was taken from the surface (0-20 cm) of contaminated area near a Pb and Zn mine in Zanjan Province (48° 25´ east, 36° 37´ north), Iran (Hamzenejad and Sepehr 2017).. Diatomite sample was collected from Birjand mine as a natural adsorbent at North East of Iran (59° 36´ east, 32° 69´ north).