ashing

in analysis
https://doi.org/10.1351/goldbook.A00468
Dry or wet mineralization as a method of preconcentration of trace substances.
See also: charring
Source:
PAC, 1979, 51, 1195. 'Separation and Preconcentration of Trace Substances. I-Preconcentration for Inorganic Trace Analysis' on page 1200 (https://doi.org/10.1351/pac197951051195)