Title: Formaldehyde residues in formalin-treated olive flounder (Paralichthys olivaceus), black rockfish (Sebastes schlegeli), and seawater
Abstract: Formaldehyde concentrations in muscle were determined in cultured olive flounder (Paralichthys olivaceus) and black rockfish (Sebastes schlegeli) after bath treatment of formalin (37% formaldehyde) at 100, 300 and 500 mg/l for 1 h. Loss of formaldehyde from aerated seawater by air blower and non-aerated seawater containing 25, 50, 100, 150 and 200 mg/l of formalin was also determined. Formaldehyde concentrations in the muscle of fish treated with 500 mg/l of formalin for 1 h were significantly higher (p<0.05) than the formaldehyde concentration control tissue when analyzed immediately after bath exposures (0 h withdrawal). However, there were no significant differences (p>0.05) between formaldehyde concentrations in control tissue and tissue from fish sampled 24, 48 and 72 h after the exposure. Formaldehyde in seawater containing 25–200 mg/l of formalin reached detection limit concentration (0.05 μg/ml) within 8–19 days, but its degradation was accelerated (within 6–10 days) by aeration. These findings provide a scientific relevant database suitable for determination of an appropriate withdrawal time and environmental risk assessment for therapeutic use of formalin in the aquaculture industry of marine finfish.
Publication Year: 2001
Publication Date: 2001-03-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 69
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