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Spectrophotometric Determination of Mercury with Iodide and Rhodamine B

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons22174

Timpe,  Olaf
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons21347

Behrens,  Malte
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Zitation

Loo, A. Y. Y., Lay, Y. P., Kutty, M. G., Timpe, O., Behrens, M., & Abd Hamid, S. B. (2012). Spectrophotometric Determination of Mercury with Iodide and Rhodamine B. Sains Malaysiana, 41(2), 213-218. Retrieved from http://www.ukm.my/jsm/english_journals/vol41num2_2012/contentsVol41num2_2012.html.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0010-1F2D-A
Zusammenfassung
Spectrophotometric methods for the trace amount determination of Hg(II) via extraction and polyvinylalcohol (PVAl) water stabilization was explored. The methods are based on the formation of ion-association complex of Hg(II) with Rhodamine B, [(HgI4)2-][(Rhodamine B)+]2 in highly acidic solution. Extraction using benzene showed the Beer’s law was obeyed for mercury(II) in the range of 5 to 27 μg Hg(II) / 20 mL of sample and molar absorptivity, ε = 17.68 × 104 L mole-1cm-1. For polyvinylalcohol (PVAl) stabilization method, Beer’s law showed the validity range of 10 to 120 μg Hg(II) / 10 mL of sample and molar absorptivity, ε = 16.84 × 103 L mole-1cm-1. The benzene-extraction method has been applied in assessing the performance of copper sulfide ion-exchanger in removing Hg(II). The result was comparable to the result obtained using cold vapor atomic absorption spectrometry (CVAAS).