Fig. 1From: Distribution and extent of heavy metal(loid) contamination in agricultural soils as affected by industrial activityExample of the general sampling strategy around an industrial complex (site B). The inner line denotes the boundary of the industrial complex, while the middle and outer lines are respectively 500 and 1000 m from the inner boundary. A and B indicate the specific sampling positions at 0–500 and 500–1000 m, respectively. Within each section, five sampling positions were selected having an even distribution within each section encompassedBack to article page