COLOUR REAGENT FOR DETERMINING SULPHIDE IONS

摘要

FIELD: chemistry.SUBSTANCE: invention relates to use of 2,4-dinitrophenol as a colour reagent for determining concentration of sulphide ions in an alkaline medium.EFFECT: when using 2,4-dinitrophenol to determine concentration of sulphide ions, analysis is carried out rapidly and without release of toxic hydrogen sulphide.1 dwg, 9 ex