The effect of humic acid on uptake/adsorption of copper by a marine bacterium and two marine ciliates

The effect of Suwannee river humic acid (SRHA) on the uptake of copper by the marine bacterium Vibrio natriegens and 2 marine ciliates, Uronema sp. and Pleuronema sp. was investigated. Two experiments demonstrated a significant reduction in copper adsorption/uptake by V. natriegens in the presence o...

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Bibliographic Details
Published in:Chemosphere (Oxford) 1998-01, Vol.38 (2), p.293-310
Main Authors: Lores, E M, Snyder, R A, Pennock, J R
Format: Article
Language:English
Online Access:Get full text
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Summary:The effect of Suwannee river humic acid (SRHA) on the uptake of copper by the marine bacterium Vibrio natriegens and 2 marine ciliates, Uronema sp. and Pleuronema sp. was investigated. Two experiments demonstrated a significant reduction in copper adsorption/uptake by V. natriegens in the presence of humic acid (HA). This was in contrast to the experimental hypothesis. The presence of humic acid decreased copper uptake in Uronema (both fed and unfed), but not in Pleuronema. For Uronema, the decrease in copper uptake attributable to the presence of HA was lowest in those ciliates which were fed V. natriegens. This suggested that some of the humic bound copper became available to ciliates through trophic processes. There are 45 references.
ISSN:0045-6535