Mean concentrations of nickel in the soil in uncontaminated regions were 8 to 50 µg/g dry weight (see supporting documentation). ###>Masse corporelle, 27 kg; débit ventilatoire, 12 m3/j; quantité d'eau bue, 0,9 L/j; quantité de terre ingérée, 35 mg/j (DHM, 1992).