title: Determination of metals in Brazilian soils by inductively coupled plasma mass spectrometry.
abstract: The concentration of metals in Brazilian soil under no-tillage (NT) and an area under native vegetation (NV) was determined by inductively coupled plasma mass spectrometry. The applied method was based on microwave-assisted acid digestion using HNO3, HCl, H2O2, and HF. The accuracy of the method was evaluated by analyzing two certified reference materials (BCR-142 and RS-3). The relative standard deviation for all target elements was below 8% indicating an adequate precision and the limit of detection ranged from 0.03 μg g(-1) (Cd) to 24.0 μg g(-1) (Fe). The concentrations of Al, As, Ba, Cd, Cu, Fe, Mg, Mn, Ni, Pb, Sr, and Zn in the different layers (0-10, 10-20, 20-40, and 40-60 cm) were determined in two types of soils, located in Paraná State in Brazil. The soil layers analysis revealed a different behavior of metals concentrations in soil samples under NT and NV. The obtained results showed a clear impact of anthropogenic action with respect to specific metals due to many years of uncontrolled application rates of limestone and phosphate fertilizers.
authors.affiliation: Federal University of Santa Catarina, Trindade, 88040-970, Florianópolis, SC, Brazil.
authors.forename: Rui M
authors.initials: RM
authors.lastname: de Carvalho
authors.forename: Jéssica A
authors.initials: JA
authors.lastname: dos Santos
authors.forename: Jessee A S
authors.initials: JA
authors.lastname: Silva
authors.forename: Thiago G
authors.initials: TG
authors.lastname: do Prado
authors.forename: Adriel Ferreira
authors.initials: AF
authors.lastname: da Fonseca
authors.forename: Eduardo S
authors.initials: ES
authors.lastname: Chaves
authors.forename: Vera L A
authors.initials: VL
authors.lastname: Frescura
mesh_terms: D001938:Brazil; D004784:Environmental Monitoring / Q000379:methods* / Q000706:statistics & numerical data; D013058:Mass Spectrometry / Q000379:methods*; D019216:Metals, Heavy / Q000032:analysis*; D008872:Microwaves; D012987:Soil / Q000737:chemistry*
chemical_list: D019216:Metals, Heavy; D012987:Soil