I'm using spectroscopy to relate the concentration of sulfate in solution with its turbidity. The principle is soluble sulfates are precipitated as colloidal barium sulfate. In this methodology, the sample is first treated with a conditioning reagent before being reacted with barium chloride.
The conditioning reagent is an aqueous mixture of glycerol, concentrated hydrochloric acid, 95% isopropyl alcohol and sodium chloride. Can anyone tell me the purpose of each component?
I imagine it used either to stabilize the colloidal suspension, or to drive the precipitation reaction to completion, or both. Any insight is appreciated.
The sole purpose is to prevent BaSO4 precipitates from settling down due to flocculation. If it is not prevented the turbidity observation keeps going down not allowing the observer to record stable data.
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