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Humic acid sorption onto a quartz sand surface: a kinetic study and insight into fractionation


, : Humic acid sorption onto a quartz sand surface: a kinetic study and insight into fractionation. Journal of Colloid and Interface Science 325(1): 93-100

A kinetic study of Aldrich humic acid sorption onto a quartz sand surface has revealed an initial rapid uptake of humic acid molecules followed by a much slower sorption. The humic acid molecular weight and chemical fractionation resulting from adsorption onto the simple quartz sand surface were investigated for the two kinetic steps by coupled asymmetric flow-field flow fractionation-UV/visible absorption spectrophotometry.

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