Adsorption of dissolved organic matter to the inorganic filter substrate and its implications for C uptake measurements

H Maske; E Garcia-Mendoza

doi:10.1128/aem.60.10.3887-3889.1994

Adsorption of dissolved organic matter to the inorganic filter substrate and its implications for C uptake measurements

Appl Environ Microbiol. 1994 Oct;60(10):3887-9. doi: 10.1128/aem.60.10.3887-3889.1994.

Authors

H Maske¹, E Garcia-Mendoza

Affiliation

¹ Ecology Department, Centro de Investigación Científica y de Educación Superior de Ensenada, Ensenada, Baja California, Mexico.

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.