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Aggregation studies of humic acid using multiangle laser light scattering
T J Manning1, T Bennett, D Milton
1Department of Chemistry, Valdosta State University, GA 31698, USA. tmanning@valdosta.edu
The Science of the Total Environment
|September 16, 2000
Abstract:
An aqueous phase study of the naturally occurring dissolved organic carbon humic acid (HA) is performed using multiangle laser light scattering (MALLS) to measure its RMS radius and average molecular weight. A Zimm plot using Berry Formulism and a second-order fit gave an average molar mass of 1.164 x 10(8) g/mol and an average RMS radius (Rz) of 436.0 +/- 36 nm at 25 degrees C.