1992 Volume 33 Issue 6 Pages 548-556_1
A method of simultaneous determination of oxadiazon and oxadiazon metabolites (phenol, methoxy, acid and alcohol) in pond snail (Cipanogopaludinachinesis malleata) and blue mussel (Mytilus edulis) by gas chromatography (ECD-GC and NP-FID-GC) was established.
We examined pond snails from Yodo River and blue mussels from Osaka Bay by using this analytical method. Oxadiazon and oxadiazon acid form were detected at levels of 0.59-1.26ppm and 2.09-4.80ppm, respectively in pond snails and blue mussels collected from May to June 1989. Oxadiazon acid form was detected at a high concentration (3.41-6.48 times more) compared with oxadiazon in pond snails and blue mussels. The presence of oxadiazon and oxadiazon acid form detected by ECD-GC and NP-FID-GC was confirmed by GC-mass spectrometry. The other oxadiazon metabolites were not detected.
