Analytical methods QuEChERS method

Table 6.6 GC-MS analytical conditions used for analysis of pesticides by the QuEChERS method.

GC/MS-SIM analysis coupled with QuEChERS method (section 9.2.1.1) is performed using the analytical conditions reported in Table 9.6. Pesticides analyzed are reported in Table 9.7 with their GC retention time and the m/z ion used for quantification. 

For analytical studies, sample preparation is necessary to determine the composition of phenolic compounds in these matrices. The most widely used extraction system is UAE, which is an inexpensive method since it involves the use of low organic solvent and requires short extraction times. Multi-analyte methods with minimal sample manipulation are demanded. However, vegetables and fruits are very complex matrices and hence sample extraction and clean-up treatments must be carefully developed to reduce manipulation and total analysis time. Therefore, QuEChERS could be a useful tool for this purpose in future applications. 

The QuEChERS method is a streamlined approach that makes it easier and less expensive for analytical chemists to examine pesticide residues in food. 

Paya, R, Anastassiades, M., Mack, D., Sigalova, I.,Tasdelen, B., Oliva, J., Barba, A. (2007) Analysis of pesticide residues using the Quick Easy Cheap Effective Rugged and Safe (QuEChERS) pesticide multiresidue method in combination with gas and liquid chromatography and tandem mass spectrometric detection. Analytical and Bioanalytical Chemistry, 389,1697-1714. 

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