Nature’s communications earth & environment have recently published an article where carboxylic acids were coprecipitated with iron (oxyhydr)oxide ferrihydrite and “near-edge X-ray absorption fine structure spectroscopy” and wet chemical treatments were used.
The abstract of this article concludes: “Our work offers a mechanistic basis for understanding the stability and persistence of organic carbon in soils and sediments, which might be used to develop an overarching relationship between organic functional group-richness, mineral interactions and organic carbon preservation in the Earth system”
Silson’s silicon nitride membranes were used for the spectroscopy process in a high vacuum environment.
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