title: Fast Track to Molar-Mass Distributions of Technical Lignins.
abstract: Technical lignins (waste products obtained from wood pulping or biorefinery processes) have so far required lengthy analysis procedures and different eluents for molar-mass analysis by gel permeation chromatography (GPC). This challenge has become more pressing recently since attempts to utilize lignins have increased, leading to skyrocketing numbers of samples to be analyzed. A new approach, which uses the eluent DMSO/LiBr (0.5 % w/v) and converts lignosulfonate salts into their acidic form before analysis, overcomes these limitations by enabling measurement of all kinds of lignins (kraft, organosolv, soda, lignosulfonates) in the same size-exclusion chromatography (SEC) system without the necessity of prior time-consuming derivatization steps. In combination with ultra-performance liquid chromatography (UPLC), analysis times are shortened to one tenth of classical lignin GPC. The new approach is presented, along with a comparison of GPC and UPLC methods and a critical discussion of the analytical parameters.
authors.affiliation: Department of Chemistry, Division of Chemistry of Renewable Resources and Christian-Doppler Laboratory "Advanced cellulose chemistry and analytics", University of Natural Resources and Life Sciences, Vienna, Konrad-Lorenz-Straße 24, A-3430, Tulln, Austria.
authors.forename: Irina
authors.initials: I
authors.lastname: Sulaeva
authors.affiliation: Department of Chemistry, Division of Chemistry of Renewable Resources and Christian-Doppler Laboratory "Advanced cellulose chemistry and analytics", University of Natural Resources and Life Sciences, Vienna, Konrad-Lorenz-Straße 24, A-3430, Tulln, Austria.
authors.forename: Grigory
authors.initials: G
authors.lastname: Zinovyev
authors.affiliation: Waters S.A.S. BP 608, 78056, Saint-Quentin, En Yvelines Cedex, France.
authors.forename: Jean-Michel
authors.initials: JM
authors.lastname: Plankeele
authors.affiliation: Department of Chemistry, Division of Chemistry of Renewable Resources and Christian-Doppler Laboratory "Advanced cellulose chemistry and analytics", University of Natural Resources and Life Sciences, Vienna, Konrad-Lorenz-Straße 24, A-3430, Tulln, Austria.
authors.forename: Ivan
authors.initials: I
authors.lastname: Sumerskii
authors.affiliation: Department of Chemistry, Division of Chemistry of Renewable Resources and Christian-Doppler Laboratory "Advanced cellulose chemistry and analytics", University of Natural Resources and Life Sciences, Vienna, Konrad-Lorenz-Straße 24, A-3430, Tulln, Austria.
authors.forename: Thomas
authors.identifier: 0000-0002-6636-9260
authors.initials: T
authors.lastname: Rosenau
authors.affiliation: Department of Chemistry, Division of Chemistry of Renewable Resources and Christian-Doppler Laboratory "Advanced cellulose chemistry and analytics", University of Natural Resources and Life Sciences, Vienna, Konrad-Lorenz-Straße 24, A-3430, Tulln, Austria.
authors.forename: Antje
authors.initials: A
authors.lastname: Potthast
mesh_terms: D001965:Bromides / Q000737:chemistry; D002850:Chromatography, Gel / Q000379:methods*; D002851:Chromatography, High Pressure Liquid; D004121:Dimethyl Sulfoxide / Q000737:chemistry; D008031:Lignin / Q000031:analogs & derivatives / Q000737:chemistry*; D018020:Lithium Compounds / Q000737:chemistry; D008970:Molecular Weight; D011108:Polymers / Q000737:chemistry; D014866:Waste Products
chemical_list: D001965:Bromides; D018020:Lithium Compounds; D011108:Polymers; D014866:Waste Products; C001545:lignosulfuric acid; C040949:lithium bromide; D008031:Lignin; D004121:Dimethyl Sulfoxide
keywords: GPC; UPLC; fast lignin analysis; molar mass distributions; technical lignins