Table 1.

Land occupation and number of samples collected for analysis of soil potentially toxic elements in the municipality of Barcarena, Pará state, Brazil.

Ocupations	Description	Area (Hectare)	Samples
Bom Futuro	Peri-urban area of small residences around the municipal dump and adjacent to the bauxite refinery and with some residents working in the collection and separation of garbage, in the perimeter of the backyards of their houses.	106	33
Burajuba	Peri-urban area with land for small and medium-sized farmers, the predominant crops being cassava and açaí palm in a rudimentary production system, without rational management and without application of inputs.	164	73
Dump	Open-air deposit of a large part of the urban solid waste in the municipality of Barcarena. This area intersects with Bom Futuro.	25	20
Refinery Area	Peri-urban industrial area around Hydro-Alunorte's alumina processing plant. Part vegetated with secondary forest and part with bare soil close to industrial facilities.	350a	73
Itupanema	Predominantly urban area near the bauxite refinery where a small portion of the residents have backyards cultivated with regional fruit species, without management and without application of inputs such as pesticides. This location is also called Vila Nova.	267	75
Total		912	274

^aValue of the sampled area, disregarding the interior of the industrial plant and the solid waste deposit.