Oxidation effect on the analysis of iron in the interstitial water of recent anoxic sediments

B.N. Troup; O.P. Bricker; J.T. Bray

doi:10.1038/249237a0

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Oxidation effect on the analysis of iron in the interstitial water of recent anoxic sediments

B.N. Troup·O.P. Bricker·J.T. Bray

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Abstract

Recent studies on the changes in composition of interstitial water during its separation from sediments 1-3 prompted us to evaluate the effect of squeezing on the concentration of ferrous iron within the interstitial water. Sediment samples were taken in northern Chesapeake Bay (38°56′ N and 76°25′ W) with a Benthos gravity corer. Layers of sediment were immediately extruded from the plastic coring tube and loaded into nylon squeezer barrels. The interstitial water was squeezed from the sediment through a 0.22 μm Millipore filter by the pressure of nitrogen acting against a rubber diaphragm 4 . The water drained directly into a calibrated test tube containing a solution of o-phenanthroline, buffered at pH 3.6, and the iron content was determined colorimetrically 5 . © 1974 Nature Publishing Group.

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Source-reported bounding extent: 37.046408899699564° to 39.69873414348139° latitude; -77.01416015625° to -75.552978515625° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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B.N. Troup, O.P. Bricker, J.T. Bray. 1974. Oxidation effect on the analysis of iron in the interstitial water of recent anoxic sediments. https://doi.org/10.1038/249237a0

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