Fig. 2From: Distribution and extent of heavy metal(loid) contamination in agricultural soils as affected by industrial activityAveraged difference between heavy metal(loid) concentration of topsoil and subsoil at 0–500 m, 500–1000 m, and > 1000 m from industrial complexes. Differences were determined by subtracting subsoil values from topsoil values. Error bars are standard errorsBack to article page