A multi-residue method for the determination of pesticides in tea using multi-walled carbon nanotubes as a dispersive solid phase extraction absorbent

Hou, Xue; Lei, Shaorong; Qiu, Shiting; Guo, Ling-An; Sheng-guo, YI; Liu, Wei

doi:10.1016/j.foodchem.2013.12.031

Cited by 139 publications

(41 citation statements)

References 27 publications

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“…This amount showed comparable purification efficiency with traditional QuEChERS method with PSA clean up. Authors demonstrated that MWCNTs mixed with PSA resulted in further improvement of the performance of d-SPE step [42]. The photography of raw and purified extracts using different sorbents is shown in Fig.…”

Section: Application Of Alternative Sorbents In the D-spementioning

confidence: 99%

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A review of recent developments and trends in the QuEChERS sample preparation approach

2015

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Abstract:A comprehensive review is presented on the recent developments and trends in the QuEChERS (quick, easy, cheap, effective, rugged, and safe) sample preparation approach. This technique involves liquidliquid partitioning using acetonitrile and purifying the extract using dispersive solid-phase extraction (d-SPE). Originally, the QuEChERS was introduced for pesticides residues analysis in high moisture fruits and vegetables, but more recently it is gaining significant popularity in the analysis of broad spectrum of analytes in huge variety of samples. The wide range of the technique applications is possible due to introducing various modifications based on the use of different extraction solvent and salt formulation and buffer additions for salting-out partitioning step and the application of various d-SPE sorbents for clean-up step. Therefore, the QuEChERS approach is useful for analysis of, among others pesticides, veterinary drugs and other pharmaceuticals, mycotoxins, polycyclic aromatic hydrocarbons (PAHs), dyes, acrylamide, synthetic musks and UV filters, bisphenols, polybrominated diphenyl ethers and other flame retardants, endocrine disruptors, and other chemical compounds. Thanks to the QuEChERS approach, high-throughput multiresidue methods operate in a routine contaminant control of food products, feedstuff, and environmental samples.

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Section: Application Of Alternative Sorbents In the D-spementioning

confidence: 99%

“…Another solution for extract purification was proposed by Hou et al [42]. A modified QuEChERS method used multi-walled carbon nanotubes (MWCNTs) as a dispersive solid phase extraction adsorbent, which was then applied by the authors for analysis of 78 pesticide residues in tea.…”

Section: Application Of Alternative Sorbents In the D-spementioning

confidence: 99%

A review of recent developments and trends in the QuEChERS sample preparation approach

2015

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“…In this case, the use of 50 mg per mL of extract provides clean extracts without a significant decrease in recoveries. Other modifications include the addition of MWCNTs [35], magnetic nanoparticles [36], alumina [37], and Florisil [38]. Finally, other versions of the clean-up step, which consists of replacing the d-SPE procedure by a SPE column, have been developed.…”

Section: Introductionmentioning

confidence: 99%

Evolution and applications of the QuEChERS method

González‐Curbelo

Socas‐Rodríguez

Herrera‐Herrera

et al. 2015

TrAC Trends in Analytical Chemistry

323

143

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“…MWCNTs have special physical and chemical characteristics that can be exploited, such as unique thermal, mechanical, electronic and chemical properties. MWCNTs performed well in cleanup of tea, tobacco, cabbage, spinach, grape and orange matrices [16,17,18,19,20]. In this work, a modified QuEChERS method with MWCNTs as r-DSPE material coupled with GC-FPD and GC-ECD was applied to evaluate the dissipation dynamics and residues of pirimiphos-methyl and deltamethrin in stored rice.…”

Section: Introductionmentioning

confidence: 99%

Decrease of Pirimiphos-Methyl and Deltamethrin Residues in Stored Rice with Post-Harvest Treatment

Zhang

et al. 2014

IJERPH

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A modified quick, easy, cheap, effective, rugged (QuEChERS) method with multi-walled carbon nanotubes (MWCNTs) as reversed-dispersive solid phase extraction (r-DSPE) material was applied to the analysis of pirimiphos-methyl and deltamethrin residues in stored rice. Two dustable powder (DP) formulations (2% pirimiphos-methyl and deltamethrin DP; 5% pirimiphos-methyl DP) were applied in simulated storehouse trials in the lab. The residues and dissipation of the two pesticides in stored rice were investigated. Slow dissipation of both pesticides was observed in stored rice. The half-lives of pirimiphos-methyl were 23.9–28.9 days, and those of deltamethrin were 23.9–24.8 days. Residues of pirimiphos-methyl from application rates of 4.5–6.75 a.i. mg/kg (active ingredient milligram per kilogram) and 10–15 a.i. mg/kg were 1.6–3.8 mg/kg and 3.0–4.5 mg/kg at 60 days Pre-harvest Interval (PHI). Residues of deltamethrin from an application rate of 0.5–0.75 a.i. mg/kg were 0.13–0.14 mg/kg at 60 days PHI. Both pesticides residues were below the Maximum Residue Limits (MRLs) established by the Codex Alimentarius Commission (CAC). Therefore, at the recommended dosages they are safe for use on stored rice.

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A multi-residue method for the determination of pesticides in tea using multi-walled carbon nanotubes as a dispersive solid phase extraction absorbent

Cited by 139 publications

References 27 publications

A review of recent developments and trends in the QuEChERS sample preparation approach

A review of recent developments and trends in the QuEChERS sample preparation approach

Evolution and applications of the QuEChERS method

Decrease of Pirimiphos-Methyl and Deltamethrin Residues in Stored Rice with Post-Harvest Treatment

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