Determination of carbamates in edible vegetable oils by ultra-high performance liquid chromatography-tandem mass spectrometry using a new clean-up based, on zirconia for QuEChERS methodology

作者：Moreno Gonzalez David; Huertas Perez Jose F; Garcia Campana Ana M; Gamiz Gracia Laura^*

来源：Talanta, 2014, 128: 299-304.

DOI：10.1016/j.talanta.2014.04.045

• Carbamates
• UHPLC-MS/MS
• Z-Sep(+)
• Edible vegetable oils

In this study a fast, selective and sensitive multiresidue method based on QuEChERS methodology has been evaluated and validated for the determination of carbamate pesticides, in edible vegetable oils by UHPLC-MS/MS. A new clean-up sorbent, Supel (TM) QuE Z-Sep(+), has been successfully applied in vegetable oil extracts. Z-Sep(+) was compared with other sorbents (i.e. mixture of C18 and PSA) previously used for dispersive solid phase extraction of these matrices, reducing more effectively matrix effects without a significant decrease of analyte recoveries. Matrix effect was studied in different matrices (extra-virgin olive, sunflower, maize, linseed and sesame oil) being <= vertical bar 30 vertical bar% for most of the studied pesticides. Under optimum conditions, recoveries ranged from 74% to 101%, with relative standard deviations lower than 10%. Limits of quantification ranged from 0.09 to 2.0 mu g kg(-1), allowing their determination at the low concentration levels demanding by current legislation.

• 出版日期2014-10-1