Journal
SCIENCE OF THE TOTAL ENVIRONMENT
Volume 257, Issue 2-3, Pages 171-176Publisher
ELSEVIER
DOI: 10.1016/S0048-9697(00)00517-9
Keywords
humic acid; light scattering; laser; particle size; Zimm plot; MALLS
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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 (R-z) of 436.0 +/- 36 nm at 25 degrees C. (C) 2000 Elsevier Science B.V. All rights reserved.
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