title: Short algorithm to compensate for sampling-volume errors in diffusion-cell studies.
abstract: This communication describes a short algorithm enabling arbitrarily large but equal samples to be taken from the two chambers of a diaphragm diffusion cell without introducing any systematic error. It creates a transformed time-scale, dependent on sampling volume, which linearizes the output, fits this to a straight line by simple linear regression, and computes the diffusion coefficient from the slope. The advantages of sampling equal fractions from both chambers are discussed in terms of the greater precision this allows. The procedure may have uses in other fields.
authors.affiliation: MRC Dental Group, Dental School, Bristol, UK.
authors.forename: G H
authors.initials: GH
authors.lastname: Dibdin
mesh_terms: D000465:Algorithms; D004058:Diffusion; D008432:Mathematical Computing; D012044:Regression Analysis