Matrix solid-phase dispersion extraction of organophosphorous pesticides from beeswax

Medina-Dzul, Kati; Medina-Peralta, Salvador; Carrera‐Figueiras, Cristian; Sánchez, Mario; Muñoz-Rodríguez, David

doi:10.1080/03067319.2017.1363195

Cited by 7 publications

(1 citation statement)

References 35 publications

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“…A variety of cleanup approaches are available for evaluating broadly contaminated multiclass pesticides in different matrices. Purification techniques, mainly solid-phase extraction (SPE), 10,11 matrix solid-phase dispersion (MSPD), 12,13 solid-phase microextraction (SPME), 14,15 magnetic-solid phase extraction (M-SPE), 16,17 and an improved quick, easy, cheap, effective, rugged and safe (QuEChERS) method, 18,19 have been used on different samples. The most widely used pretreatment tool, SPE, can be automated.…”

Section: Introductionmentioning

confidence: 99%

Occurrence of Pesticides in Pericarpium Citri Reticulatae and Related Products Using Syringe Filter-Based Cleanup

Li¹,

Xiao-wen²,

Luo³

et al. 2018

J. Braz. Chem. Soc.

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The study established a method of rapid cleanup using an easy to operate syringe filter and gas chromatography coupled to an electron capture detector (GC-ECD) to detect 37 pesticides in Pericarpium Citri Reticulatae and related products. The critical parameters related to clean-up efficiency were optimized. The adsorbents, which included PestiCarb (0.5 g), primary secondary amine (PSA, 0.25 g) and Florisil (1.0 g), were loaded in turn and push-pull was performed 4 times within a 1 min operating time. Under optimized conditions, the recovery of pesticides ranged from 61.6 to 128.6% at three spiked levels (25, 50, 500 µg kg -1 ). After analysis by GC-ECD and confirmation by gas chromatography coupled to tandem mass spectrometry (GC-MS/MS), 8 out of 57 batches of peels were found to be contaminated with hexachlorobenzene, dicofol, procymidone and p,p'-DDE (dichlorodiphenyldichloroethylene). The most frequently (10.5%) occurring pollutants were hexachlorobenzene and dicofol. In addition, 5 batches contained prohibited or restricted persistent organochlorines at levels above regulations, and 5 of these peels contained more than two pesticides. Yang, Y. H.; Yang, M. H.; RSC Adv. 2015, 5, 86163. 31. Alves, A. A. R.; Rezende, M. J. C.; Hovell, A. M. C.; Bizzo, H. R.; Oliveira, A. C. L.; Rodrigues, S. V.; Rezende, C. M.; J.Braz. Chem. Soc. 2012, 23, 306.

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Section: Introductionmentioning

confidence: 99%