Determination of polar pesticides by phasetransfer catalysed derivatization and negative-ion chemical ionization gas chromatography-mass spectrometry /
H.D. Meiring, G. den Engelsman and A.P.J.M. de Jong
PESTICIDES--IF.
IF 98 (15)
Journal of Chromatography 644 (2) 1993 : 357-365 0021-9673