In Situ Collection of Diagenetic and Induced Oxyhydroxide Precipitates from Riverine and Estuarine Sediments

The use of plastic sheets as collectors of diagenetically-formed oxyhydroxides from riverine and estuarine sediments was evaluated. In a range of materials tested in the laboratory, Teflon and polycarbonate were found to be the most efficient collector materials. Laboratory optimisation experiments...

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Published in:Environmental technology 1998-12, Vol.19 (12), p.1191-1201
Main Authors: Teasdale, P. R., Allen, L., Apte, S. C., Batley, G. E., Birch, G.
Format: Article
Language:English
Subjects:
Applied sciences
Decontamination. Miscellaneous
estuaries
Exact sciences and technology
Freshwater
Iron oxyhydroxide
Pollution
polycarbonate
sediment
Soil and sediments pollution
Teflon
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cited_by cdi_FETCH-LOGICAL-c356t-4a0c8a8885331c7d49a8232fd25c65b60c8a0a01811d373839ede5211f85f9cb3
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container_issue 12
container_start_page 1191
container_title Environmental technology
container_volume 19
creator Teasdale, P. R.
Allen, L.
Apte, S. C.
Batley, G. E.
Birch, G.
description The use of plastic sheets as collectors of diagenetically-formed oxyhydroxides from riverine and estuarine sediments was evaluated. In a range of materials tested in the laboratory, Teflon and polycarbonate were found to be the most efficient collector materials. Laboratory optimisation experiments indicated that the deposition of oxyhydroxides on both materials occurred quickly (
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The deposits collected were predominantly iron with lesser amounts of manganese. At several sites strong correlations were observed between the concentrations of manganese and zinc deposited on the Teflon collector surfaces. In both the laboratory and field experiments, biologically-mediated iron oxyhydroxide deposition in anoxic sediments was frequently observed (mainly caused by the activities of burrowing organisms). The mechanism of iron deposition on polycarbonate was investigated in detail. This plastic contains high concentrations of oxygen which is released over sustained periods, thereby inducing the deposition of iron oxyhydroxide even in anoxic sediments. 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source Taylor and Francis Science and Technology Collection
subjects Applied sciences
Decontamination. Miscellaneous
estuaries
Exact sciences and technology
Freshwater
Iron oxyhydroxide
Pollution
polycarbonate
sediment
Soil and sediments pollution
Teflon
title In Situ Collection of Diagenetic and Induced Oxyhydroxide Precipitates from Riverine and Estuarine Sediments
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