A comparison of methods for isolating volatile organic compounds from wastewater is conducted. The most suitable method is steam distillation and selective conversion of volatile carbonyl compounds to 2,4-dinitrophenylhydrazones (2,4-DNPH). Separation and analysis of the volatile fraction are performed using gas chromatography-mass spectrometry (GC–MS), HPLC, and HPLC–MS. Precursors of volatile organic compounds are isolated from a model wastewater system using extraction methods. Higher fatty acids, amino acids, carboxylic acid esters, phenols, and carbonyl compounds are identified using GC–MS and HPLC–MS. Ten carbonyl compounds were identified in wastewater from a fish processing plant using HPLC and HPLC–MS, with a total concentration of 15.9 mg of 2,4-DNPH per kg of fish waste, calculated as acetaldehyde.
Соколова et al. (Wed,) studied this question.