Browsing by Author "Lalah, Joseph O."
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Fine tuning the microenvironment of [EuW10O36]9- anion leads to the large enhancement of the red light luminescence
Omwoma, Solomon; Lagat, Silah C.; Lalah, Joseph O. (Elsevier, 2017-12)The polyoxometalate (POM) anion of europium (III) decatungstate [EuW10O36]9-exhibits great luminescence quantum yields of approximately 67% but suffers reduced red light emissions that are due to the low 5D0→7F2 transmissions. ... -
Recent Advances on Mercury Speciation in Aquatic Ecosystems, Health Effects and Analytical Techniques
Omwoma, Solomon; Lagat, Silah C.; Lalah, Joseph O.; Owuor, Philip O.; Schramm, Karl-Werner (SCIENCEDOMAIN international, 2017-02-18)Elemental mercury is not as poisonous as its congeners such as methyl mercury and dimethyl mercury, especially at trace levels. However, understanding the speciation mechanisms of mercury in aquatic ecosystems ... -
Technological tools for sustainable development in developing countries: The example of Africa, a review
Omwoma, Solomon; Lalah, Joseph O.; Kueppers, Stephan; Wang, Yawei; Lenoir, Dieter; Schramm, Karl-Werner (Elsevier, 2017-10)Abstract The development of Africa including industrialization such as chemical production, urbanization, agriculture, waste disposal, and electric power generation has a direct and diverse effect on the environment. These ...