Organic matter quality by pyrolysis-gas chromatography/mass spectrometry and lead and arsenic adsorption.

The organic soils (Histosols) are important as filters for organic and inorganic pollutants, mainly because they are usually located on the banks of rivers and lakes. The aim of this study was to evaluate which functional groups of soil organic matter (SOM) most contribute for the Pb and HAsO adsorption in Histosols. This study used 20 samples (160 ~ 290 g kg of organic carbon (OC) collected at 0-5 cm in five areas of Histosols from Curitiba, Southern of Brazil.