LC/ESI-MS/MS method for the simultaneous determination of macrocyclic lactone parasiticides in livestock products and fish
2010
Inoue, K., Kinjo Gakuin Univ., Nagoya (Japan) | Yoshimi, Y. | Hino, T. | Oka, H.
An LC/ESI (positive-mode)-MS/MS method was developed for simultaneous quantification of 8 macrocyclic lactones (abamectin B1a, abamectin 8,9-Z isomer B1a, emamectin benzoate B1a, emamectin benzoate 8,9-Z isomer B1a, ivermectin, eprinomectin B1a, doramectin and moxidectin) in animal tissues, egg, milk and honey. The separation was achieved on a TSK-GEL ODS 100 V column (2.0 x 50 mm, 3 micro m) with a mobile phase consisting of 0.1% formic acid in acetonitrile, and 0.1 mM ammonium formate-0.1% formic acid in water, at a flow rate of 0.2 mL/min with gradient elution. Linear calibration plots were obtained with high correlation coefficients (r=0.998-0.999). The LOQ and LOD ranged from.0.02-1.5 ng/mL and 0.1-5 ng/mL, respectively. Average recoveries were in the range of 70.8-117.1% with associated RSD values15% (n
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