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Study Data from Hubei Normal University Update Knowledge of Electrokinetics (Determination of three phthalate esters in environmental samples by coal...

August 29, 2014



Study Data from Hubei Normal University Update Knowledge of Electrokinetics (Determination of three phthalate esters in environmental samples by coal cinder extraction and cyclodextrin modified micellar electrokinetic chromatography)

By a News Reporter-Staff News Editor at Science Letter -- Current study results on Electrokinetics have been published. According to news reporting from Huangshi, People's Republic of China, by NewsRx journalists, research stated, "A new micellar electrokinetic chromatography (MEKC) method using beta-cyclodextrin (ß-CD) as the electrophoresis additive has been developed for the simultaneous determination of dimethyl phthalate (DMP), diethyl phthalate (DEP) and di(2-ethylhexyl) phthalate (DEHP) in environmental samples. To improve the sensitivity of cyclodextrin-modified MEKC (CD-MEKC), a flow injection procedure using a microcolumn packed with coal cinder as the solid-phase extractant was also investigated for the preconcentration and separation of DMP, DEP and DEHP in environmental samples."

The news correspondents obtained a quote from the research from Hubei Normal University, "Parameters affecting CD-MEKC separation and coal cinder flow injection solid-phase extraction were systematically researched. In the presence of the running buffer [5 mmol/L of borax, 5% (v/v) methanol and 25 mmol/L of sodium dodecyl sulfate at pH 9.5], the addition of 14 mmol/L ß-CD greatly improved the separation efficiency. The analytes were quantitatively adsorbed by coal cinders and readily desorbed quantitatively with 0.2 mL of 10% (v/v) methanol-10 mmol/L disodium hydrogen phosphate. Under the optimum conditions, the enrichment factor of coal cinder was 60, and the determination limits of DMP, DEP and DEHP were 3.07, 2.07 and 4.06 ng/mL, respectively."

According to the news reporters, the research concluded: "The presented procedure was successfully applied to determine DMP, DEP and DEHP in landfill leachate and water samples with satisfactory results."

For more information on this research see: Determination of three phthalate esters in environmental samples by coal cinder extraction and cyclodextrin modified micellar electrokinetic chromatography. Journal of Chromatographic Science, 2014;52(6):547-52. (Oxford University Press - www.oup.com/; Journal of Chromatographic Science - chromsci.oxfordjournals.org)

Our news journalists report that additional information may be obtained by contacting H. Sun, Dept. of Chemistry and Environmental Engineering, Hubei Key Laboratory of Pollutant Analysis and Reuse Technique, Hubei Normal University, Huangshi, People's Republic of China. Additional authors for this research include F. Jiang, L. Chen, J. Zheng, Y. Wu and M. Liu (see also Electrokinetics).

Keywords for this news article include: Asia, Huangshi, Nanotechnology, Electrokinetics, 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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