Studies of the physico-chemical conditions of the sediment-water interface in Lokka and Porttipahta reservoirs

Seppo Helsten, Tero Väisänen

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)

Abstract

The physico-chemical conditions of the sediment-water interface in the Lokka and Porttipahta reservoirs in Northern Finland were investigated.
Oxygen concentration was measured from sedimented matter and the bottom sediment with a minielectrode measurement technique. The consumption of O2 was calculated by Fick's first law of diffusion across the sediment-water interface. Methane samples were sub-sampled from sediment cores and analysed with a gas Chromatograph equipped with FI-detector.
The oxygen and methane concentrations correlated to the redox potentials. Methane concentration was high in organic rich sediments with low redox potential values.
Oxygen coasumption was higher in Lokka.
Original languageEnglish
Pages (from-to)215-218
JournalInternational Review of Hydrobiology
Volume83
Publication statusPublished - 1998
MoE publication typeA1 Journal article-refereed

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sediment-water interface
methane
redox potential
sediments
oxygen
water
sediment
sediment core
detectors
Finland
gas
chemical
gases
sampling

Cite this

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title = "Studies of the physico-chemical conditions of the sediment-water interface in Lokka and Porttipahta reservoirs",
abstract = "The physico-chemical conditions of the sediment-water interface in the Lokka and Porttipahta reservoirs in Northern Finland were investigated. Oxygen concentration was measured from sedimented matter and the bottom sediment with a minielectrode measurement technique. The consumption of O2 was calculated by Fick's first law of diffusion across the sediment-water interface. Methane samples were sub-sampled from sediment cores and analysed with a gas Chromatograph equipped with FI-detector. The oxygen and methane concentrations correlated to the redox potentials. Methane concentration was high in organic rich sediments with low redox potential values. Oxygen coasumption was higher in Lokka.",
author = "Seppo Helsten and Tero V{\"a}is{\"a}nen",
year = "1998",
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volume = "83",
pages = "215--218",
journal = "International Review of Hydrobiology",
issn = "1434-2944",
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Studies of the physico-chemical conditions of the sediment-water interface in Lokka and Porttipahta reservoirs. / Helsten, Seppo; Väisänen, Tero.

In: International Review of Hydrobiology, Vol. 83, 1998, p. 215-218.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Studies of the physico-chemical conditions of the sediment-water interface in Lokka and Porttipahta reservoirs

AU - Helsten, Seppo

AU - Väisänen, Tero

PY - 1998

Y1 - 1998

N2 - The physico-chemical conditions of the sediment-water interface in the Lokka and Porttipahta reservoirs in Northern Finland were investigated. Oxygen concentration was measured from sedimented matter and the bottom sediment with a minielectrode measurement technique. The consumption of O2 was calculated by Fick's first law of diffusion across the sediment-water interface. Methane samples were sub-sampled from sediment cores and analysed with a gas Chromatograph equipped with FI-detector. The oxygen and methane concentrations correlated to the redox potentials. Methane concentration was high in organic rich sediments with low redox potential values. Oxygen coasumption was higher in Lokka.

AB - The physico-chemical conditions of the sediment-water interface in the Lokka and Porttipahta reservoirs in Northern Finland were investigated. Oxygen concentration was measured from sedimented matter and the bottom sediment with a minielectrode measurement technique. The consumption of O2 was calculated by Fick's first law of diffusion across the sediment-water interface. Methane samples were sub-sampled from sediment cores and analysed with a gas Chromatograph equipped with FI-detector. The oxygen and methane concentrations correlated to the redox potentials. Methane concentration was high in organic rich sediments with low redox potential values. Oxygen coasumption was higher in Lokka.

M3 - Article

VL - 83

SP - 215

EP - 218

JO - International Review of Hydrobiology

JF - International Review of Hydrobiology

SN - 1434-2944

ER -