Dye-binding assay for the determination of sub-milligram quantities of suspended solids in freshwater


Clay and plankton particles from natural freshwater samples were collected on glass-fiber filters and stained with toluidine-blue to saturation at pH 8.6. The adsorbed dye was then eluted and quantified by spectrophotometry. The dye-binding capacity per dry weight was a consistent feature of the assemblage of particles contained in each sample, and varied… (More)
DOI: 10.1007/BF01955434

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