By a News Reporter-Staff News Editor at Science Letter -- Current study results on Pesticides have been published. According to news reporting originating from Beijing, People's Republic of China, by NewsRx correspondents, research stated, "A new micro-extraction technique named low-density magnetofluid dispersive liquid-liquid microextraction (LMF-DMMLE) has been developed, which permits a wider range of solvents and can be combined with various detection methods. Comparing with the existing low density solvents micro-extraction methods, no special devices and complicated operations were required during the whole extraction process."
Our news editors obtained a quote from the research from China Agricultural University, "Dispersion of the low-density magnetofluid into the aqueous sample is achieved by using vortex mixing, so disperser solvent was unnecessary. The extraction solvent was collected conveniently with an external magnetic field placed outside the extraction container after dispersing. Then, the magnetic nanoparticles were easily removed by adding precipitation reagent under the magnetic field. In order to evaluate the validity of this method, ten organochlorine pesticides (OCPs) were chosen as the analytes. Parameters influencing the extraction efficiency such as extraction solvents, volume of extraction solvents, extraction time, and ionic strength were investigated and optimized. Under the optimized conditions, this method showed high extraction efficiency with low limits of detection of 1.8-8.4 ng L-1, good linearity in the range of 0.05-10.00 mu g L-1 and the precisions were in the range of 1.3-9.6% (RSD, n = 5)."
According to the news editors, the research concluded: "Finally, this method was successfully applied in the determination of OCPs in real water samples."
For more information on this research see: Low-density magnetofluid dispersive liquid-liquid microextraction for the fast determination of organochlorine pesticides in water samples by GC-ECD. Analytica Chimica Acta, 2013;793():37-43. Analytica Chimica Acta can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Analytica Chimica Acta - www.elsevier.com/wps/product/cws_home/502681)
The news editors report that additional information may be obtained by contacting Z.G. Shen, China Agricultural University, Dept. of Appl Chem, Beijing 100193, People's Republic of China. Additional authors for this research include Z.Y. He, P. Wang, Z.Q. Zhou, M.J. Sun, J.D. Li and D.H. Liu (see also Pesticides).
Keywords for this news article include: Asia, Beijing, Pesticides, Agrochemicals, People's Republic of China
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