Abstract
The macromolecular configuration of humic acid sample obtained from Farm Yard Manure was investigated by viscometric measurements at varying sample concentrations and in presence of a neutral electrolyte. The humic acid molecule behaved like a linear flexible colloid at lower sample concentrations and rigid rod like or sphereo-colloid polyelectrolyte at higher sample concentrations. The polymeric behaviour was alsos shown in the presence of high amount of neutral electrolyte. An analysis of the data for particle weight, volume and axial ratio showed the molecular configuration as rod like.
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