Methods ofanalysis The analyses used to characterize wastewater vary from precise quantitative chemical determinations to the more qualitative biological and physical determinations The quantitative methods of analysis are either gravimetric volumetric, or physicochemical Turbidimetry, colorimetry, potentiometry, polarography, adsorption spectrometry, fluorometry, and nuclear radiation are representative of the physicochemical analysesMethods of Analysis The analyses used to characterize wastewater vary from precise quantitative chemical determinations to the more qualitative biological and physical determinations. The quantitative methods of analysis are either gravimetric, volumetric, or physicochemical. Turbidimetry, colorimetry, potentiometry, polarography, adsorption spectrometry, fluorometry, and nuclear radiation are representative of the physicochemical analyses