CVD grown carbon nanofibers: an efficient DSPE sorbent for cleanup of multi-class pesticide residue in high fat and low
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ORIGINAL PAPER
CVD grown carbon nanofibers: an efficient DSPE sorbent for cleanup of multi-class pesticide residue in high fat and low water commodities by QuEChERS using GC-ECD Minu Singh 1 & Anshuman Srivastava 1 & Yogesh Kumar Sharma 2 & Shiv Singh 3
&
Sheelendra Pratap Singh 1,4
Received: 15 March 2020 / Accepted: 24 July 2020 # Springer-Verlag GmbH Austria, part of Springer Nature 2020
Abstract An inexpensive, effective, and efficient dispersive solid-phase extraction (DSPE) sorbent was developed as an alternative to traditionally used sorbents (primary secondary amine and C18) for fatty matrices using the QuEChERS method. Catalytic chemical vapor deposition grown carbon nanofibers dispersed on activated carbon fibers (Ni-ACF/CNF) having a BET specific surface area of 738 (m2/g) were for the first time evaluated as a DSPE material for sample cleanup before gas chromatographic analysis. Based on cleanup performance and recoveries, 10 mg of Ni-ACF/CNF was found optimal for the determination of twenty-seven multi-class pesticides in high fat and low water commodities/matrices (peanut, soybean, sesame, and flaxseed). The recoveries obtained for all analytes were in the range ~ 72 to ~ 117%, with relative standard deviation values ≤ 15%. The limits of detection and quantification values were 0.7–4.2 ng/g and 2.3–13.9 ng/g, respectively. The matrix match calibration curve was linear in the range 20–500 ng/g with a correlation coefficient of ≥ 0.993. The results reveal that the Ni-ACF/CNF is a competent DSPE sorbent, similar to primary secondary amines and C18 sorbent materials, for pesticide determination by QuEChERS methods in high fat and low water commodities.
Keywords Dispersive solid-phase extraction . Amine and C18 sorbents . Carbon nanofiber . Catalytic chemical vapor deposition . Pesticide . Sample cleanup . QuEChERS
Introduction Electronic supplementary material The online version of this article (https://doi.org/10.1007/s00604-020-04464-8) contains supplementary material, which is available to authorized users. * Shiv Singh [email protected]; [email protected] * Sheelendra Pratap Singh [email protected] 1
Pesticide Toxicology Laboratory, Regulatory Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), MG Marg, Lucknow, Uttar Pradesh 226001, India
2
Department of Botany, University of Lucknow, Lucknow, Uttar Pradesh 226007, India
3
Lightweight Metallic Materials, Council of Scientific and Industrial Research-Advanced Materials and Processes Research Institute (CSIR-AMPRI), Hoshangabad Road, Bhopal, Madhya Pradesh 462026, India
4
Analytical Chemistry Laboratory, Regulatory Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), MG Marg, Lucknow, Uttar Pradesh 226001, India
Oilseeds and their derivatives are considered one of the primary sources for human nutrition in daily diet as they contain amply fat-soluble vitamins, triglycerides, and fatty acids. Thus, it is considered a major concern since these oily seeds have a complex matrices w
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