title: A new insert sample approach to paper spray mass spectrometry: a paper substrate with paraffin barriers.
abstract: The analytical performance for paper spray (PS) using a new insert sample approach based on paper with paraffin barriers (PS-PB) is presented. The paraffin barrier is made using a simple, fast and cheap method based on the stamping of paraffin onto a paper surface. Typical operation conditions of paper spray such as the solvent volume applied on the paper surface, and the paper substrate type are evaluated. A paper substrate with paraffin barriers shows better performance on analysis of a range of typical analytes when compared to the conventional PS-MS using normal paper (PS-NP) and PS-MS using paper with two rounded corners (PS-RC). PS-PB was applied to detect sugars and their inhibitors in sugarcane bagasse liquors from a second generation ethanol process. Moreover, the PS-PB proved to be excellent, showing results for the quantification of glucose in hydrolysis liquors with excellent linearity (R(2) = 0.99), limits of detection (2.77 mmol L(-1)) and quantification (9.27 mmol L(-1)). The results are better than for PS-NP and PS-RC. The PS-PB was also excellent in performance when compared with the HPLC-UV method for glucose quantification on hydrolysis of liquor samples.
authors.affiliation: Chemistry Institute, Federal University of Goiás, 74001-970, Goiânia, GO, Brazil. boniek@ufg.br.
authors.forename: T C
authors.initials: TC
authors.lastname: Colletes
authors.affiliation: Chemistry Institute, Federal University of Goiás, 74001-970, Goiânia, GO, Brazil. boniek@ufg.br.
authors.forename: P T
authors.initials: PT
authors.lastname: Garcia
authors.affiliation: Embrapa Agroenergia, Brasilia, DF, Brazil. patricia.abdelnur@emprapa.br.
authors.forename: R B
authors.initials: RB
authors.lastname: Campanha
authors.affiliation: Embrapa Agroenergia, Brasilia, DF, Brazil. patricia.abdelnur@emprapa.br.
authors.forename: P V
authors.initials: PV
authors.lastname: Abdelnur
authors.affiliation: Federal Institute of Education, Science and Technology of Espírito Santo, 29106-010, Vila Velha, ES, Brazil and Petroleomic and Forensic Laboratory, Department of Chemistry, Federal University of Espírito Santo, 29075-910, Vitória, ES, Brazil.
authors.forename: W
authors.initials: W
authors.lastname: Romão
authors.affiliation: Chemistry Institute, Federal University of Goiás, 74001-970, Goiânia, GO, Brazil. boniek@ufg.br.
authors.forename: W K T
authors.initials: WK
authors.lastname: Coltro
authors.affiliation: Chemistry Institute, Federal University of Goiás, 74001-970, Goiânia, GO, Brazil. boniek@ufg.br.
authors.forename: B G
authors.initials: BG
authors.lastname: Vaz
mesh_terms: D005947:Glucose / Q000032:analysis; D013058:Mass Spectrometry / Q000379:methods*; D010209:Paper; D010232:Paraffin; D012997:Solvents / Q000737:chemistry; D013499:Surface Properties
chemical_list: D012997:Solvents; D010232:Paraffin; D005947:Glucose