کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1242091 1495817 2014 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Evaluation of zirconium dioxide-based sorbents to decrease the matrix effect in avocado and almond multiresidue pesticide analysis followed by gas chromatography tandem mass spectrometry
ترجمه فارسی عنوان
ارزیابی سوربنت های مبتنی بر دی اکسید زیرکونیوم برای کاهش اثر ماتریکس در تجزیه و تحلیل آفت کش های چندگانه با آووکادو و بادام و سپس با استفاده از اسپکترومتری جرمی کروماتوگرافی گاز
کلمات کلیدی
کروماتوگرافی گازی، طیف سنجی جرمی، تجزیه و تحلیل آفت کش های چندگانه، دی اکسید زیرکونیوم، ماتریس روغن بالا
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی


• Two different extraction protocols were tested for extraction of pesticides from high oil commodities.
• Sorbents containing ZrO2 were tested as clean-up in combination with QuEChERS and ethyl acetate multiresidue method in pesticide residues extraction.
• QuEChERS with Z-Sep provided cleaner extracts than ethyl acetate multiresidue method.
• Pesticides were detected in real samples of avocado and almond.

Two sorbents containing ZrO2 (Z-Sep and Z-Sep+) were tested as a d-SPE clean-up in combination with the QuEChERS and ethyl acetate multiresidue method in the pesticide residues extraction in avocado. All extracts were analysed using gas chromatography coupled with a triple quadrupole mass spectrometer working in multi-reaction monitoring mode. GC QToF was used to compare the amount of matrix compounds present in the final extracts, prepared according to different protocols. The highest number of pesticides with acceptable recoveries and the lowest amount of coextracted matrix compounds were provided by QuEChERS with Z-Sep. Subsequently, this method was fully validated in avocado and almonds. Validation studies were carried out according to DG Sanco guidelines including: the evaluation of recoveries at two levels (10 and 50 μg/kg), limit of quantitation, linearity, matrix effects, as well as interday and intraday precision. In avocado, 166 pesticides were fully validated compared to 119 in almonds. The method was operated satisfactorily in routine analysis and was applied to real samples.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Talanta - Volume 118, 15 January 2014, Pages 68–83
نویسندگان
, , , , , ,