The determination of total organic matter (carbon content) in aqueous media. Part II. Involatile organic matter in de-mineralised water

Abstract

The method described in Part I has been adapted for the analysis of de-mineralised water. The sample is concentrated by evaporation, and the concentrate is injected on to copper(II) oxide at 850° to 900° C; the organic matter is converted to carbon dioxide, which is reduced to methane and measured with a flame-ionisation detector. The method covers the range 0·1 to 1·5 p.p.m. of involatile organic matter (calculated as carbon) in the original de-mineralised water, and the reproducibility is estimated to be ±0·1 p.p.m.