Fourier transform infrared spectrometric strategies for the determination of Buprofezin in pesticide formulations

Abstract Two different strategies for Buprofezin determination, an off-line extraction and stopped-flow determination and an automated procedure, based on the on-line extraction of Buprofezin samples with chloroform and flowing action analysis–fourier transform infrared (FIA–FT-IR) spectrometric measurement of the extracts, have been developed. For the treatment of the off-line extraction mode, data a three-factor partial least squares (PLSs) calibration was developed, using the region from 1465.7 to 1342.3 cm−1 with a single point baseline defined at 2051.9 cm−1 and based on the use of chloroform solutions of Buprofezin. The method provides a R.S.D. On the other hand, the recommended FIA method provided a 3 s limit of detection of 20 μg ml−1, which corresponds to 0.12% (w/w) in the solid sample, a repeatability of 0.8% as R.S.D., and a maximum sampling frequency for the whole procedure of 6 h−1. The waste generation, being lower than the off-line strategy, is only 3 ml of CHCl3 per sample.

[1]  A. G. Frenich,et al.  COMPARATIVE STUDY USING ECD, NPD, AND MS/MS CHROMATOGRAPHIC TECHNIQUES IN THE DETERMINATION OF PESTICIDES IN WETLAND WATERS , 2001 .

[2]  R. Santelli,et al.  Flow injection-FTIR determination of dithiocarbamate pesticides. , 2000, The Analyst.

[3]  D. Lin-Vien.  The Handbook of Infrared and Raman Characteristic Frequencies of Organic Molecules , 1991 .

[4]  Motoshi Nakamura,et al.  Relation of sorption behavior of agricultural chemicals in solid-phase extraction with their n-octanol/water partition coefficients evaluated by high-performance liquid chromatography (HPLC) , 2001 .

[5]  A. Angioni,et al.  Acephate and buprofezin residues in olives and olive oil , 2000 .

[6]  D. J. Curran,et al.  Determination of Phenyl Isocyanate in a Flow-Injection System With Infrared Spectrometric Detection , 1985 .

[7]  J. Chalmers,et al.  Handbook of vibrational spectroscopy , 2002 .

[8]  J. M. Garrigues,et al.  Flow injection Fourier transform infrared determination of caffeine in coffee , 1999 .

[9]  Flow injection Fourier transform infrared determination of nicotine in tobacco. , 1999, The Analyst.

[10]  N. Danielson,et al.  Aqueous Flow Injection Analysis with Fourier Transform Infrared Detection , 1985 .

[11]  H. Stan.  Pesticide residue analysis in foodstuffs applying capillary gas chromatography with mass spectrometric detection. State-of-the-art use of modified DFG-multimethod S19 and automated data evaluation. , 2000, Journal of chromatography. A.