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Potential of soil organic matter molecular chemistry determined by pyrolysis-gas chromatography/mass spectrometry for forensic investigations.
Sci Justice
November 2019
Universidade Federal do Paraná, DSEA/UFPR, Curitiba (PR) 80.035-050, Brazil.
Article Synopsis
- Wetlands near urban areas, often seen as isolated, may be used for body disposal or as crime scenes, with the soils typically being rich in organic matter (Histosols).
- This study used pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) to analyze small soil samples from five wetlands in Curitiba, Brazil, focusing on their organic composition.
- Results showed a clear distinction between fresh plant materials and more durable, charred materials, suggesting that Py-GC/MS could aid forensic investigations by helping trace samples back to crime suspects.
DOM-Flocculation: A suitable approach for separating free and DOM-bound herbicides?
Environ Sci Pollut Res Int
May 2010
Institute of Soil Science (310), Department of Soil Chemistry, University of Hohenheim, D-70593, Stuttgart, Germany.
Dissolved organic matter (DOM) in soil solution is considered to interact with herbicides enhancing their mobility and promoting subsequent leaching.Batch experiments were conducted to test if free and DOM-bound herbicides can be separated by a DOM-flocculation technique with Cu as a coagulant.DOM was extracted from the H and A horizons of two soils (Terric Histosol, Cumuli-Calcaric Cambisol) and from the O horizon of a forest soil (Humic Cambisol).
View Article and Find Full Text PDFHistosol is a non-flammable solvent mixture of synthetic aromatic hydrocarbons with a flash point of 124 degrees F (T.C.C.
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