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Reports Outline Nanoparticles Study Findings from S. Yan and Colleagues (Magnetic solid phase extraction based on magnetite/reduced graphene oxide...

July 11, 2014



Reports Outline Nanoparticles Study Findings from S. Yan and Colleagues (Magnetic solid phase extraction based on magnetite/reduced graphene oxide nanoparticles for determination of trace isocarbophos residues in different matrices)

By a News Reporter-Staff News Editor at Science Letter -- New research on Nanoparticles is the subject of a report. According to news reporting out of Zhejiang, People's Republic of China, by NewsRx editors, research stated, "A simple one-step solvothermal method was applied for the preparation of magnetite/reduced graphene oxide (MRGO), and the synthetic nanocomposites with a magnetic particle size of similar to 8 nm were used as an adsorbent for magnetic solid phase extraction of isocarbophos (ICP) in different sample matrices prior to gas chromatography (GC) detection. The identity of the nanomaterial was confirmed using Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy and transmission electron microscopy."

Our news journalists obtained a quote from the research, "It was shown that Fe3O4 nanoparticles with a uniform size were homogeneously anchored on RGO nanosheets. Increased oxidation degrees of graphite oxide, big particle sizes and large loading amounts of Fe3O4 on the surface of RGO led to a decrease of adsorption capacity of MRGO to ICP. The adsorption behavior of this adsorbent was better fitted by the pseudo-second-order kinetic model. Several parameters affecting the extraction efficiency were investigated and optimized, including adsorbent dosage, extraction time, ionic strength and desorption conditions. And then, a rapid and effective method based on MRGO combined with GC was developed for the determination of ICP in aqueous samples. A linear range from 0.05 to 50 ng mL(-1) was obtained with a high correlation coefficient (R-2) of 0.9995, and the limit of detection was found to be 0.0044 ng mL(-1). This method was successfully applied to the analysis of ICP in five kinds of samples, including apple, rice, lake water, cowpea and cabbage. The recoveries in different sample matrices were in the range from 81.00% to 108.51% with relative standard deviations less than 9.72%."

According to the news editors, the research concluded: "It can be concluded that the proposed analytical method is highly-efficient, sensitive, precise, accurate and practicable."

For more information on this research see: Magnetic solid phase extraction based on magnetite/reduced graphene oxide nanoparticles for determination of trace isocarbophos residues in different matrices. Journal of Chromatography A, 2014;1347():30-38. Journal of Chromatography A can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Journal of Chromatography A - www.elsevier.com/wps/product/cws_home/502688)

Our news journalists report that additional information may be obtained by contacting S. Yan, Natl Center Qual Supervis & Inspect Commod, Yiwu 322000, Zhejiang, People's Republic of China. Additional authors for this research include T.T. Qi, D.W. Chen, Z. Li, X.J. Li and S.Y. Pan (see also Nanoparticles).

Keywords for this news article include: Asia, Zhejiang, Nanotechnology, Emerging Technologies, People's Republic of China

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Science Letter


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