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The polarographic measurement of O 2 , Fe 2+ , Mn 2+ , and S 2− in hypolimnetic water
Author(s) -
Davison W.
Publication year - 1977
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1977.22.4.0746
Subject(s) - hypolimnion , anoxic waters , polarography , chemistry , inorganic chemistry , ion , ferrous , analytical chemistry (journal) , electrochemistry , oxygen , environmental chemistry , electrode , eutrophication , organic chemistry , nutrient
Anoxic hypolimnetic waters can he investigated by differential pulse and DC sampled polarography. A single scan can measure dissolved oxygen and ferrous, manganous, and sulfide ions in less than 3 min. The unique properties of the hypolimnion, enhanced concentrations and freedom from oxygen, enable direct measurement without pretreating the water sample. Filtration is unnecessary because an electrochemical kinetic technique measures only labile ionic species of a single oxidation state.