A New Method for Determination of Bifenthrin Residues in Aquatic Tox Medium Followed by Gas Chromatography Mass Spectrometry MethodAuthor(s): Tentu Nageswara Rao, Karri Apparao, E. G. Sreenivasula Reddy and T. B. Patrudu
A simple and sensitive validated GC-MS-EI analytical method was developed for the determination of bifenthrin residues in different aquatic tox mediums. The tox mediums were those which provide nutrients and help the growth of different aquatic organisms for their survival and multiplication. The constituent of different mediums includes blended water for fish, M4 Medium for Daphnia magna and OECD TG 201 medium for Alga. The method was validated using in aquatic tox samples spiked with bifenthrin sample at different concentration levels (0.5 and 5.0 mg/L). Average recoveries (using each concentration six replicates) ranged 88-96%, with relative standard deviations less than 2%, calibration solutions concentration in the range 0.5-100 mg/L and limit of detection (LOD) and limit of quantification (LOQ) were 0.2 mg/L and 0.5 mg/L, respectively. The proposed method can be applied successfully for the determination of bifenthrin residues in different aquatic solutions.