AbstractMethoxychlor was applied to 125‐m3limnocorrals at nominal concentrations of 3 and 300 μg L−1in 1981 and of 5 and 50 μg L−1in 1982. The half‐life of methoxychlor in water rangedfrom6 to 13 d; however, methoxychlor was strongly adsorbed to and slowly released from the polyethylene liners and the sediments on the bottom of the enclosures. Forced mixing of methoxychlor in the water resulted in greater adsorption to the sediments than did surface application. Methoxychlor had little effect on water chemistry parameters, although nitrite and dissolved inorganic carbon concentrations were higher in the treated than in the control corrals in each year of
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