title: Design and optimization of a micropump-based electrospray device for preparation of nitrocellulose substrates for plasma desorption time-of-flight mass spectrometry.
abstract: Details of a nitrocellulose (NC) substrate preparation technique in 252Cf plasma desorption time-of-flight mass spectrometry were investigated using an electrospray device, in which a micropump was employed for solution delivery. The molecular ion yields for three standard proteins (porcine insulin, chicken-egg lysozyme and chymotrypsinogen A) were studied as a function of the electrosprayed NC layer thickness, spray rate, NC solution concentration and some other parameters. Optimal parameters of the NC substrate preparation procedure were determined, which include deposition of a layer of 250-750 micrograms cm-2 at up to 15 microliters min-1 spray rate and up to 15 micrograms microliters-1 solution concentration.
authors.affiliation: Application Laboratory National Research Institute for Technical Physics and Automation, Sumy, Ukraine.
authors.forename: P V
authors.initials: PV
authors.lastname: Bondarenko
authors.forename: R A
authors.initials: RA
authors.lastname: Zubarev
authors.forename: A N
authors.initials: AN
authors.lastname: Knysh
authors.forename: B V
authors.initials: BV
authors.lastname: Rozynov
mesh_terms: D000818:Animals; D002645:Chickens; D002919:Chymotrypsinogen; D003101:Collodion; D004531:Eggs; D004867:Equipment Design; D007328:Insulin; D013058:Mass Spectrometry / Q000295:instrumentation* / Q000379:methods; D009113:Muramidase; D013552:Swine
chemical_list: D007328:Insulin; D003101:Collodion; D002919:Chymotrypsinogen; D009113:Muramidase