Modern Chemistry

Volume 7, Issue 2, June 2019

  • A Method for Measuring the Density of Fine - Grained Solids

    Li Ning

    Issue: Volume 7, Issue 2, June 2019
    Pages: 27-29
    Received: Aug. 07, 2019
    Accepted: Aug. 29, 2019
    Published: Sep. 17, 2019
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    Abstract: Density is an inherent property of matter, which plays a very important role in production and life. There are many and relatively simple methods to measure the density of large particulate matter. But the density measurement of fine-grained solid materials is difficult because of the volume measurement. Existing methods require expensive and compl... Show More
  • Chemical Speciation, Bioavailability and Risk Assessment of Potentially Toxic Metals in Highway Dusts as Indicators of Highway Pollution

    Festus Mayowa Adebiyi, Abiodun Odunlami Adegunwa, Odunayo Timothy Ore, Godswill Ehimengbale Akhigbe

    Issue: Volume 7, Issue 2, June 2019
    Pages: 30-37
    Received: Aug. 11, 2019
    Accepted: Aug. 29, 2019
    Published: Sep. 17, 2019
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    Abstract: This paper investigated concentrations of heavy metals in roadside soil dusts collected along Ife-Ibadan highway in Osun state, Nigeria with the aim of assessing the impacts of vehicular emissions on the environments. The soil dusts were analyzed for total metal concentrations and speciation using Atomic absorption spectrophotometry followed by the... Show More
  • Contribution to Reactivity, Stability and Selectivity of Monodentated Free Phosphines

    Kouadio Valery Bohoussou, Anoubilé Bénié, Mamadou Guy-Richard Koné, N’guessan Yao Silvère Diki, Koffi Alexis Respect Kouassi, Nahossé Ziao

    Issue: Volume 7, Issue 2, June 2019
    Pages: 38-44
    Received: Aug. 19, 2019
    Accepted: Sep. 02, 2019
    Published: Sep. 17, 2019
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    Abstract: Phosphines having a high degree of instability in their syntheses, it is necessary to find conditions for obtaining stable products in order to propose new stable and active compounds. It is this concern that responds to the theoretical study of stability and selectivity. This theoretical study of chemical reactivity was carried out using the Densi... Show More