SEARCH Articles Figures Tables Association organic compounds humic matter Carbon compounds marine organic matter Carbon compounds organic matter Classifying Matter According to Its Composition Elements, Compounds, and Mixtures Dissolved organic matter compounds Matter Compounds Elements Mixtures Matter according to Its Composition Elements. Compounds, and Mixtures Nitrogen compounds marine organic matter Nitrogen compounds natural organic matter, protein Organic matter organosulfur compounds Oxygen compounds marine organic matter Sorption of Neutral Compounds to Dissolved Organic Matter (DOM)