title: Nitrate reduction activity in a continuous flow-through system in marine sediments.
abstract: Nitrate reduction in a non-polluted, coastal marine sediment was measured with an open flow-through system. The recorded rates depended upon nitrate concentration but were largely independent of the weight of sediment (14-35 g) and the dilution rate (0.7-5 h(-1)). Rate of nitrate uptake followed classical Michaelis-Menten kinetics, and km and Vmax values were equal to 78μM and 0.168μm mol g(-1) hour(-1), respectively. These values are in good agreement with those found by the other authors for the same biotope but by different methods. This technique of the open flow-through system is fast, simple, and inexpensive and involves small quantities of sediment (∼10 g).
authors.affiliation: Centrao National Patagonico (CONICET), 28 de Julio n∘28-(9.120), Puerto Madryn, Argentine.
authors.forename: J L
authors.initials: JL
authors.lastname: Esteves
authors.forename: G
authors.initials: G
authors.lastname: Mille
authors.forename: F
authors.initials: F
authors.lastname: Blanc
authors.forename: J C
authors.initials: JC
authors.lastname: Bertrand