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THE ANNUAL AND DIURNAL VARIATION IN THE VERTICAL DISTRIBUTION OF ACID‐SOLUBLE FERROUS AND TOTAL IRON IN A SMALL DIMICTIC LAKE
Author(s) -
McMahon J. W.
Publication year - 1969
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.1969.14.3.0357
Subject(s) - ferrous , reagent , diurnal temperature variation , chemistry , environmental chemistry , ferrous sulphate , environmental science , inorganic chemistry , atmospheric sciences , geology , organic chemistry
Changes in the vertical distribution of acid‐soluble ferrous and total iron in filtered lake water were measured weekly for 12 months using the organic reagent bathophenanthroline. Acid‐soluble ferrous iron was present throughout all strata, the concentration fluctuating in a definite annual pattern. Values of Fe 2+ changed hourly and followed a diurnal pattern. It is suggested that the concentration of Fe 2+ in lake water is controlled by photochemical reactions and, perhaps, also by metabolic activity of microorganisms.