Micellar enhanced analytical application of Bismuthiol-II for the spectrophotometric determination of trace copper in nutritional matrices (Journal article)

Giokas, D. L./ Paleologos, E. K./ Veltsistas, P. G./ Karayannis, M. I.


A simple spectrophotometric method for the determination of copper is described herewith, based on the formation of colored species of Cu (II) with 5-mercapto-3-phenyl-1,3,4-thiadiazole-2-thione (Bismuthiol II) in the presence of a neutral surfactant, Triton X-114. The yellow colored complex of Cu (II)Bismuthiol-II-Triton X-114 shows maximum absorbance at 395 nm in water. The detection limit of the method is 0.03 mg/1 while the Beer's law is obeyed up to 1.2 mg/1 of the analyte in an aqueous medium. The validity of the method has been examined for the determination of copper in wines, food supplements and raisins. The results obtained were in good agreement with those obtained using flame atomic absorption spectrometry (FAAS). The method thus constitutes a handy alternative for the determination of copper (II) in nutritional samples.
Institution and School/Department of submitter: Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας
Keywords: copper (ii),bismuthiol ii,micelles,spectrophotometry,nutritional matrices,atomic-absorption spectrometry,colorimetric determination,hydrogen-peroxide,flow-injection,real samples,cobalt,iron,nickel,wine,potentiometry
URI: http://olympias.lib.uoi.gr/jspui/handle/123456789/8451
ISSN: 1436-5073
Link: <Go to ISI>://000178757500015
http://download.springer.com/static/pdf/898/art%253A10.1007%252Fs00604-001-0896-y.pdf?auth66=1381906185_1a8fcf1c33e9e343daf8db6711e3e2f9&ext=.pdf
Publisher: Springer Verlag (Germany)
Appears in Collections:Άρθρα σε επιστημονικά περιοδικά ( Ανοικτά)

Files in This Item:
File Description SizeFormat 
Giokas-2002-Micellar enhanced an.pdf78.97 kBAdobe PDFView/Open    Request a copy



 Please use this identifier to cite or link to this item:
http://olympias.lib.uoi.gr/jspui/handle/123456789/8451
  This item is a favorite for 0 people.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.