Abstract
The metal-organic framework ∞[(Nd0.9Eu0.1)2(DPA)3(H2O)3] was tested for extraction of thiamethoxam, thiacloprid, thiophanate-methyl, teflubenzuron, and bifenthrin from soursop exotic fruit (Annona muricata), with analysis using liquid chromatography with UV diode array detector (DAD). Experiments were carried out at one fortification level (0.5 mg kg−1, n = 5) and resulted in recoveries in the range 78 to 88 %, with relative standard deviation (RSD) values between 2.2 and 8.0 % for ∞[(Nd0.9Eu0.1)2(DPA)3(H2O)3] sorbent. Detection and quantification limits were in the ranges 0.03–0.05 and 0.1–0.2 mg kg−1, respectively, for the different pesticides studied. The method developed was linear over the range tested (0.08–100 mg kg−1), with correlation coefficients ranging from 0.9995 to 0.9999. Comparison between ∞[(Nd0.9Eu0.1)2(DPA)3(H2O)3] and conventional sorbent (Florisil) showed similar performance of ∞[(Nd0.9Eu0.1)2(DPA)3(H2O)3] polymeric sorbent for all pesticides tested.
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Acknowledgments
The authors wish to thank MCTI/CNPq (processes 578707/2008-0 and 47604/2008-0) and CAPES for fellowships and financial support of this study.
Conflict of Interest
Roberta dos Anjos de Jesus declares that she has no conflict of interest. Luís Fabrício Santana Santos declares that he has no conflict of interest. Sandro Navickiene declares that he has no conflict of interest. Maria Eliane de Mesquita declares that she has no conflict of interest. This article does not contain any studies with human or animal subjects.
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dos Anjos de Jesus, R., Santos, L.F.S., Navickiene, S. et al. Evaluation of Metal-Organic Framework as Low-Cost Adsorbent Material in the Determination of Pesticide Residues in Soursop Exotic Fruit (Annona muricata) by Liquid Chromatography. Food Anal. Methods 8, 446–451 (2015). https://doi.org/10.1007/s12161-014-9910-y
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DOI: https://doi.org/10.1007/s12161-014-9910-y