[Determination of relative molecular mass distribution of electro-oxidative degradation products of lignosulfonate by gel permeation chromatography].
The relative molecular mass and relative molecular mass distribution of electro-oxidative degradation products of sodium lignosulfonate were determined using a Waters ALC/GPC 244 apparatus comprising a mu-Ultrahydrogel 250 column and a differential refractometer index detector. The influences of the mobile phases on the elution behaviors of the samples are discussed. It is confirmed through a series of experiments that the eluent of a neutral aqueous solution containing low concentration of electrolyte could separate the components of the degradation products of lignosulfonate. The best results were obtained by using 0.05 mol/L LiCl solution with pH 6.5 as the eluent.
Chen
F G
FG
Laboratory of Cellulose and Lignocellulosics Chemistry, Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650, China. fgchen@ihw.com.cn
D002850:Chromatography, Gel; D008031:Lignin / Q000031:analogs & derivatives* / Q000032:analysis* / Q000378:metabolism; D008970:Molecular Weight; D010084:Oxidation-Reduction
C001545:lignosulfuric acid; D008031:Lignin