Simultaneous analysis of 310 pesticide multiresidues using UHPLC-MS/MS in brown rice, orange, and spinach

Chemosphere
Jonghwa LeeJeong-Han Kim

Abstract

In this study, we developed a multiresidue method for the analysis of 310 pesticides in representative agricultural produce (brown rice, orange, and spinach) using ultra high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) combined with a modified QuEChERS procedure. The optimal mobile phase composition (Methanol containing 5 mM ammonium formate and 0.1% formic acid) produced high sensitivity and reliable results. Also, the relationship between injection volume and repeatability of peak area was investigated. Most of the target pesticides had a limit of quantitation under 10 ng g-1, and correlation coefficients (r2) > 0.99 in matrix-matched standards within the range of 1-100 ng g-1. To validate the optimized method, recovery tests were performed with each of the crops at 10 and 50 ng g-1 spiking levels (n = 5). Satisfactory recoveries were achieved showing that 86.8-88.7% (at 10 ng g-1) and 91.9-96.1% (at 50 ng g-1) of the pesticides met the validation criteria (recoveries in the range of 70-120% and relative standard deviation ≤ 20%). Fifteen compounds were found to show a loss of recovery due to adsorption by primary and secondary amine or graphite carbon black. In the case of brown rice, 86.1% of pe...Continue Reading

Citations

Oct 6, 2020·Shokuhin eiseigaku zasshi. Journal of the Food Hygienic Society of Japan·Takayuki NakajimaTsuneo Hashimoto
Oct 21, 2020·Foods·Tri Thanh NguyenCristina Ratti
Aug 3, 2019·Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences·Yanwei FuJiaoyang Luo
Dec 17, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Yongho ShinHyun Ho Noh
Aug 11, 2020·Chemosphere·Hamidreza ArdalaniInge S Fomsgaard
Mar 31, 2021·Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment·Alessandro AtzeiFrancesco Corrias

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