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Simple, cost-effective and sensitive liquid chromatography diode array detector method for simultaneous determination of eight sulfonylurea herbicides in soya milk samples A
- Rejczak, Tomasz, Tuzimski, Tomasz
- Journal of chromatography 2016 v.1473 pp. 56-65
- bensulfuron-methyl, chlorsulfuron, cost effectiveness, high performance liquid chromatography, metsulfuron, oxasulfuron, rimsulfuron, soymilk, statistical analysis, tandem mass spectrometry, triasulfuron
- In this study authors propose a simple, cost-effective and sensitive liquid chromatography diode array detector (HPLC-DAD) method for the simultaneous determination of eight sulfonylurea herbicides (oxasulfuron, metsulfuron-methyl, triasulfuron, rimsulfuron, chlorsulfuron, mesosulfuron-methyl, amidosulfuron and bensulfuron-methyl) in soya milk samples. QuEChERS-based extraction procedure presents good performance for all of the analytes with recoveries in the range of 61–108% and relative standard deviations (RSD%) less than 15%. No significant matrix effect was observed thanks to application of effective zirconium-dioxide based sorbent (Z-Sep). Method LOQs for all investigated analytes were set at satisfactory low value of 10ngmL−1 of food product. The procedure was evaluated in terms of natural samples analysis. Chlorsulfuron was determined at concentration of 14.2ngmL−1 of soya milk product, which was qualitatively confirmed via LC coupled with tandem mass spectrometry (LC–MS/MS). The most important steps of procedure optimization are presented.