A new procedure for the construction of flow-through optodes. Application to determination of copper (II)

A new procedure for constructing an optical fibre reflectance, bulk optode membrane type, sensor is presented. The optode membrane consists of a plasticized poly (vinyl chloride) membrane in which the ionophore is dissolved, entrapped in a cellulose support. The new optode with the dye indicator 1-(...

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Veröffentlicht in:Fresenius' journal of analytical chemistry 2000-04, Vol.366 (8), p.811-815
Hauptverfasser: SANCHEZ-PEDRENO, C, ORTUNO, J. A, ALBERO, M. I, GARCIA, M. S, GARCIA DE LAS BAYONAS, J. C
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Sprache:eng
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Zusammenfassung:A new procedure for constructing an optical fibre reflectance, bulk optode membrane type, sensor is presented. The optode membrane consists of a plasticized poly (vinyl chloride) membrane in which the ionophore is dissolved, entrapped in a cellulose support. The new optode with the dye indicator 1-(2-pyridylazo)-2-naphthol (PAN) was incorporated in a new flow-through cell and the injection system was optimized to determine Cu (II) at 567 nm in the range 5 x 10(-5)-10(-3) M. The response was reproducible and the optode can be regenerated using 10(-2) M EDTA followed by water. The method was applied to the determination of copper in real samples.
ISSN:0937-0633
1432-1130
DOI:10.1007/s002160051576