Articles | Volume 5, issue 2
SOIL, 5, 383–398, 2019
https://doi.org/10.5194/soil-5-383-2019
SOIL, 5, 383–398, 2019
https://doi.org/10.5194/soil-5-383-2019

Original research article 19 Dec 2019

Original research article | 19 Dec 2019

Identifying and quantifying geogenic organic carbon in soils – the case of graphite

Jeroen H. T. Zethof et al.

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Short summary
A widely overlooked source of carbon (C) in the soil environment is organic C of geogenic origin, e.g. graphite. Appropriate methods are not available to quantify graphite and to differentiate it from other organic and inorganic C sources in soils. Therefore, we examined Fourier transform infrared spectroscopy, thermogravimetric analysis and the smart combustion method for their ability to identify and quantify graphitic C in soils. The smart combustion method showed the most promising results.