Other
Scientific paper
Oct 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986gecoa..50.2235b&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 50, Issue 10, pp.2235-2243
Other
8
Scientific paper
The solid Mn content of sediments at a site in the Panama Basin (5°21'N 81°56'W) decreases from 3.9% in the interfacial sediment to 1% at 1.5 cm and <0.2% below 5 cm. These conditions provide an opportunity to examine the influence of Mn oxides on the metal adsorption characteristics of natural marine sediments. The adsorption of 14 metals on interfacial sediment and sediment from depths of 0.5 to 3 cm and 15 to 19 cm from the Panama Basin site was studied, and distribution coefficients ( K D ) were determined. A comparison of the K D values for a variety of samples containing different Mn contents ( i.e. , Panama Basin sediments, MANOP site H interfacial sediment, red clay, and buserite) indicates that an increase in the solid Mn content enhances the ability of the particles to bind certain metals ( e.g. , Zn, Pb, Co, Cd, and Ba) while the binding ability for other metals ( e.g. , Cs, Be, Sc, Pu, Sn, and Fe) is not significantly affected. For the Panama Basin sediment, the K D values for Ni, Co, Cd, Ba, and Mn for the Mn enriched interfacial sediment are 5 to 23 times greater than the K D values for the Mn depleted deep sediment. The K D values for Cs, Be, Sc, Pu, and Fe for the two types of sediment are essentially the same. The correlation between the Mn content and the binding ability of the sediment for particular metals coincides with the Mn-metal correlations observed in bulk compositional data for ferromanganese nodules and sediments. This implies that the observed metal enrichments in nodules or hemipelagic sediments are most likely caused by preferential adsorption of the metals by Mn enriched phases.
Balistrieri Laurie S.
Murray James W.
No associations
LandOfFree
The surface chemistry of sediments from the Panama Basin: The influence of Mn oxides on metal adsorption does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The surface chemistry of sediments from the Panama Basin: The influence of Mn oxides on metal adsorption, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The surface chemistry of sediments from the Panama Basin: The influence of Mn oxides on metal adsorption will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1737041