Optimization of an extraction protocol for organic matter from soils and sediments using high resolution mass spectrometry: selectivity and biases 

Rosalie Kae Chu1, Malak M Tfaily2, Nikola Tolic1, Jennifer E Kyle1, Errol R Robinson1, Maggie Mae Bowman3 and Ljiljana Paša-Tolić1, (1)Pacific Northwest National Laboratory, Environmental Molecular Sciences Laboratory, Richland, WA, United States, (2)University of Arizona, Department of Environmental Sciences, Tucson, United States, (3)Pacific Northwest National Laboratory, Richland, WA, United States