Robuta

https://www.usgs.gov/publications/differentiation-colloidal-and-dissolved-silica-analytical-separation-using Differentiation of colloidal and dissolved silica: Analytical separation using spectrophotometry... A method is described that differentiates between solutions containing silica-dominated colloids and solutions that are essentially free of colloids.... dissolved silicaanalytical separationdifferentiationcolloidalusing https://pmc.ncbi.nlm.nih.gov/articles/PMC7766798/ Analytical, Preparative, and Industrial-Scale Separation of Substances by Methods of Countercurrent... Countercurrent liquid-liquid chromatographic techniques (CCC), similar to solvent extraction, are based on the different distribution of compounds between two... industrial scaleanalytical