The rapid development of industrial enterprises entails a significant increase in industrial waste, poisoning the atmosphere and water bodies. One of the sources of pollution is wastewater from enrichment plants. Their composition is complex and diverse, so effective analytical control of the content of toxic substances in them is not fully solved.

The OP-4 reagent is an oxyethylated alkylphenol with an average degree of oxyethylation equal to 4, and is used in ore flotation. Various methods have been proposed for the quantitative determination of such surfactants. However, almost all of them were used for the analysis of either pure surfactants or relatively concentrated solutions. In this case, surfactants such as OP-7 and OP-Yu, which are highly soluble in water, and have a high degree of oxyethylation, were usually determined, unlike OP-4.

The widespread use of various substances in the flotation of minerals clogs wastewater, which, poisoning reservoirs, endangers the normal existence of wildlife.

Очень малые количества сульфидов приходится определять в природных водах, сточных водах обогатительных фабрик и других предприятий. Упаривание таких растворов часто изме­няет их химический состав и требует продолжительного вре­мени ...