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Data from Urmia University Provide New Insights into Hydrocarbons [Sensitive molecular determination of polycyclic aromatic hydrocarbons based on...

August 5, 2014



Data from Urmia University Provide New Insights into Hydrocarbons [Sensitive molecular determination of polycyclic aromatic hydrocarbons based on thiolated Calix[4]arene and CdSe quantum dots (QDs)]

By a News Reporter-Staff News Editor at Physics Week -- Research findings on Hydrocarbons are discussed in a new report. According to news reporting from Orumiyeh, Iran, by VerticalNews journalists, research stated, "A novel and sensitive electrochemical sensor based on the cone conformation of the supramolecule 25, 27-(3-thiopropoxy)-p-tert-butyl calix[4]arene has been developed for quantitative determination of polycyclic aromatic hydrocarbons (PAHs). The method works effectively by immobilizing calix[4]arenes on Fe3O4 magnetic nanoparticles."

The news correspondents obtained a quote from the research from Urmia University, "CdSe quantum dots were used as electrochemical labels. CdSe quantum dots (QDs) modified PAHs in competition with the sample PAHs were intercalated into calix[4]arenes supramolecules via a host-guest interaction through individual bowl-shaped calix[4]arenes. The stripping analysis of the cadmium dissolved from CdSe nanoparticles provided a sensitive method for the detection of PAHs in the samples. The signal decrease of the QDs was proportional to the increase in the concentration of the PAHs. Under optimal conditions, among the five PAHs, the square wave voltammetry (SWV) response of QDs decreased linearly for anthracene and naphthalene in the range of 2.1 x 10(-7)-1.4 x 10(-5) and 1.5 x 10(-6)-2.5 x 10(-5) M, respectively."

According to the news reporters, the research concluded: "The calculated detection limits (3 delta) were 20.1 ng mL(-1) for anthracene and 105.5 ng mL(-1) for naphthalene."

For more information on this research see: Sensitive molecular determination of polycyclic aromatic hydrocarbons based on thiolated Calix[4]arene and CdSe quantum dots (QDs). Journal of Applied Electrochemistry, 2014;44(6):727-733. Journal of Applied Electrochemistry can be contacted at: Springer, Van Godewijckstraat 30, 3311 Gz Dordrecht, Netherlands. (Springer - www.springer.com; Journal of Applied Electrochemistry - www.springerlink.com/content/0021-891x/)

Our news journalists report that additional information may be obtained by contacting B. Sehatnia, Urmia Univ, Dept. of Organ Chem, Fac Chem, Orumiyeh, Iran. Additional authors for this research include R.E. Sabzi, F. Kheiri and A. Nikoo.

Keywords for this news article include: Iran, Asia, Orumiyeh, Chemistry, Hydrocarbons, Nanoparticle, Quantum Dots, Nanotechnology, Electrochemical, Quantum Physics, Organic Chemicals, Emerging Technologies

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


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Source: Physics Week


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