title: Adsorption of dissolved organic matter to the inorganic filter substrate and its implications for C uptake measurements.
abstract: Inorganic carbon uptake rates for glass fiber-filtered samples are higher than those for membrane-filtered samples because of adsorption of dissolved organic matter to the filter substrate. Experimentally derived values for adsorption onto filters were as follows (relative units): GF/F filter, 1, quartz filter, 1.1, GF/C filter, 0.6; GN-6 Gelman filter, 0.1; Nuclepore and Poretics filter, 0.0; Anodisc filter, 0.4 to 1.9.
authors.affiliation: Ecology Department, Centro de Investigación Científica y de Educación Superior de Ensenada, Ensenada, Baja California, Mexico.
authors.forename: H
authors.initials: H
authors.lastname: Maske
authors.forename: E
authors.initials: E
authors.lastname: Garcia-Mendoza