"Optosensors And Reflection Spectroscopy In The Flow Analysis Of Water"
Zavod. Lab.
1996 Volume 62, Issue 1 Pages 1-6
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Shvoeva, O.P.;Dedkova, V.P.;Savvin, S.B.
Abstract:
Methods of determining heavy metals in water using flow sensor systems are described. The methods are based on the concentration of metal ions in flow cells containing fibrous material or fabric discs with immobilized organic reagents. Two types of sensor are proposed: carrier discs with previously immobilized reagent (colored discs); and white carrier discs with immobilization of the reagent during the flow regime. Color changes were detected by diffuse reflectance spectroscopy (NIR spectrometry) after passage of sample through the cells at 10 ml/min. The optimum carriers, reagents and operating conditions are presented for U(VI), Pd(II), Co(II), Cu(II), Ni(II), Fe(III) and Cr(III). The sensor systems formed the basis for the OSA-TM optical sensor analyzer. which can be used to determine Co, U, Pd, Ni, and Cr in fresh water.
Uranium(VI)
Palladium(II)
Cobalt(II)
Copper(II)
Nickel(II)
Iron(III)
Chromium(III)
Environmental
Optosensing
Optimization
Immobilized reagent
Optical fiber