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The Effects of Methoxychlor on Fishes I. Acute Toxicity and Breakdown Studies
Author(s) -
Merna James W.,
Bender Michael E.,
Novy James R.
Publication year - 1972
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1972)101<298:teomof>2.0.co;2
Subject(s) - methoxychlor , toxicity , distilled water , toxicology , acute toxicity , chemistry , zoology , environmental chemistry , biology , ecology , pesticide , chromatography , organic chemistry
Abstract The rate of breakdown of methoxychlor in water varies considerably with the water source. The half life attributable to hydrolysis in distilled water exceeds 200 days, whereas the half life may be as short as one day in water of high biological activity. Static toxicity studies were found to be unreliable due to the rapid breakdown of methoxychlor. Continuous flow studies yielded TL 30 values of 7.5 μg/1 for fathead minnows and 20 μg/1 for yellow perch. These values are considerably lower than others given in the literature. The difference is probably due to the use of a wetting agent to achieve better solution of methoxychlor.