Adsorption of dissolved organic matter to the inorganic filter substrate and its implications for C uptake measurements.
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.
Maske
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Ecology Department, Centro de Investigación Científica y de Educación Superior de Ensenada, Ensenada, Baja California, Mexico.
Garcia-Mendoza
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