INTRODUCTION

The method allows determination of the mass concentration of acetic, lactic, butyric, propionic, formic. oxalic, and fumaric acids in samples of silage, haylage and in various biodegradable materials of biogas plants.

MEASURING METHOD

The measurement method is based on extraction of organic asids from a solid sample by water and their determination by capillary electrophoresis. Identification and quantification of the analyzed organic acids is performed by measuring their intrinsic UV absorption at 190 nm.