From mass to structure: modified van Krevelen diagram and adjusted
indexes for high-resolution mass data of organic matter
Abstract
The traditional van Krevelen diagram, the nominal oxidation of organic
carbon, and several aromaticity indexes generally considered C, H, O, N,
P, and S factors, or just C, H, and O. However, these evaluated methods
may provide incorrect interpretation for high-resolution mass data of
organics containing halogen elements. Therefore, we adapted the van
Krevelen diagram and the other indexes with halogen elements and
verified with 2235 model organics. The results demonstrated that the
modified van Krevelen diagram and the adjusted indexes were more
accurate for the analysis of mass data, either in the compound
classification or in the evaluation of oxidation state of organic
matter.