Determination of pesticide residues in complex matrices using multi‐walled carbon nanotubes as reversed‐dispersive solid‐phase extraction sorbent

Zhao, Pengyue; Wang, Lei; Luo, Jun; Li, Jianguo; Pan, Canping

doi:10.1002/jssc.201100566

Cited by 73 publications

(46 citation statements)

References 33 publications

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“…Matrix effects often occurred owing to the co-elution of matrix components which play a significant role in the quality of the quantitative data. [17] To study the matrix effects, the slopes of the matrix-matched calibration curves were compared with those of the solvent-based calibration curves. As shown in Table 2, the slope ratios for the six pesticides in sorghum and fermented sorghum matrices ranged from 1.2 to 2.7, which exceeded 10% of the slope ratio of 1.0 indicating that significant enhancement was found for sorghum and fermented sorghum matrices.…”

Section: Methods Validationmentioning

confidence: 99%

Residue change of six pesticides in Chinese liquor produced from sorghum

Yang

Song

et al. 2017

International Journal of Food Properties

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Residue change of six pesticides (triadimefon, lambda-cyhalothrin, beta-cypermethrin, esfenvalerate, pyraclostrobin, and difenoconazole) in Chinese liquor produced from field incurred sorghum was studied. The Chinese liquor was produced through soaking, steaming, fermentation, and distillation process. Residue magnitudes of the six pesticides were determined by gas chromatography coupled with tandem mass spectrometry (GC-MS/MS). The results showed soaking process did not significantly reduce the pesticide residues, while the steaming process involving continuous heating could obviously reduce the pesticide residues by 54-72%. Moreover, the fermentation process could remove pesticide residues by 37-65% due to biological degradation. Furthermore, the distillation process could completely remove the residue of lambda-cyhalothrin, beta-cypermethrin, esfenvalerate, pyraclostrobin, and difenoconazole, and remarkably reduce the residue of triadimefon with the processing factor between 0.002 and 0.004. This study demonstrated that the whole process could obviously reduce the residue of contaminated pesticides in Chinese liquor, especially the distillation process.ARTICLE HISTORY

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Section: Methods Validationmentioning

confidence: 99%

Residue change of six pesticides in Chinese liquor produced from sorghum

Yang

Song

et al. 2017

International Journal of Food Properties

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“…Zhao et al [131] used MWCNTs as a reverse Table 2 Selected applications of molecularly-imprinted polymers (MIPs) as solid-phase sorbents (SPSs) in solid-phase microextraction (SPME), matrix solid-phase dispersion (MSPD) and stir-bar sorptive extraction (SBSE) GC-ECD, Gas chromatography-electron capture detector; GC-FID, Gas chromatography-flame ionization detector; HPLC-FLD, High-performance liquid chromatographyfluorescence detector. a ng/g.…”

Section: Carbon Nanotubesmentioning

confidence: 99%

Recent advances in solid-phase sorbents for sample preparation prior to chromatographic analysis

Wen

Chen

et al. 2014

TrAC Trends in Analytical Chemistry

325

120

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A B S T R A C TSample preparation is a crucial bottleneck in the whole analytical process. Solid-phase sorbents (SPSs) have aroused increasing interest in research on sample preparation, as they have key roles in obtaining high clean-up and enrichment efficiency in the analysis of trace targets present in complex matrices. The objective of this review is to provide a broad overview of the recent advances and applications of SPSs in sample preparation prior to chromatographic analysis, during the period 2008-13. We include SPSs, such as molecularly-imprinted polymers, carbon nanomaterials, metallic nanoparticles and metal organic frameworks, focusing on solid-phase extraction, solid-phase microextraction, matrix solid-phase dispersion and stir-bar sorptive extraction of typical pollutants in environmental, biological, food and pharmaceutical samples. We propose remaining challenges and future perspectives to improve development of new SPSs and to apply them further.

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“…Recently, carbon nanotubes (CNTs) have emerged as effective solid-phase extractants for detecting many types of trace organic and inorganic compounds [15][16][17][18][19][20]. However, CNTs could not be employed as excellent solid-phase extractants due to the two severe defects: First, CNTs exhibit too sufficient adsorption capability for the analytes.…”

Section: Introductionmentioning

confidence: 99%

Preconcentration and analysis of Rhodamine B in water and red wine samples by using magnesium hydroxide/carbon nanotube composites as a solid-phase extractant

Liu

Chen

et al. 2015

J. Sep. Science

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A convenient and accurate analysis approach that combined solid-phase extraction and high-performance liquid chromatography was developed to determine the amount of Rhodamine B in red wine and Xiang-jiang river water samples. A novel composite, magnesium hydroxide/carbon nanotube composites, was synthesized and used as the solid-phase extractant for the preconcentration/analysis of Rhodamine B. Magnesium hydroxide/carbon nanotube composites, which combined the merits of carbon nanotubes and magnesium hydroxide, exhibited acceptable adsorption and desorption efficiencies for Rhodamine B. The linear range of the proposed solid-phase extraction with high-performance liquid chromatography method for Rhodamine B was 0.05-20.0 mg/L, with a limit of detection of 3.6 μg/L. The precision and reproducibility of the developed solid-phase extraction with high-performance liquid chromatography method and the batch-to-batch reproducibility of the solid-phase extractant were also validated at spiking levels of 0.5 and 2.0 mg/L. The recovery of Rhodamine B was 94.33-106.7%, and the recovery relative standard deviations of the intra- and interday precisions were ≤ 3.83 and ≤ 6.01%, respectively. The relative standard deviation of the batch-to-batch reproducibility was ≤ 7.98%.

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Determination of pesticide residues in complex matrices using multi‐walled carbon nanotubes as reversed‐dispersive solid‐phase extraction sorbent

Cited by 73 publications

References 33 publications

Residue change of six pesticides in Chinese liquor produced from sorghum

Residue change of six pesticides in Chinese liquor produced from sorghum

Recent advances in solid-phase sorbents for sample preparation prior to chromatographic analysis

Preconcentration and analysis of Rhodamine B in water and red wine samples by using magnesium hydroxide/carbon nanotube composites as a solid-phase extractant

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