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Soil Sample Carbon Nitrogen All reported values unit: % Carbon and Nitrogen determination in soils are fundamental data for soil chemistry characterization, environmental monitoring, agronomy and cultures. Carbon and Nitrogen are diffused elements in soils but are normally reported into low concentrations. Considering the cultivated soils or poor natural soils, concentrations of these elements are usually lower than 2% and 0.2% for carbon and nitrogen respectively (typical C:N ratio reported in cultivated soils is 10). Low elements concentration is also accompanied by the presence of a pool of...