A metal ion indicator, Alizarin Red S, was tested for its potential use in uranium selective
optode membrane. The water-soluble indicator was lipophilized in the form of an ion pair …

A colorimetric method for simultaneous preconcentration and determination of uranium (VI)
anions from aqueous samples was developed using a membrane optode formed by …

A membrane optode was developed utilizing the 8-hydroxyquinaldine (HQ) facilitated
preconcentration of UO22+ ions and subsequent colored complex formation of UO22+ with …

A new optical sensor is fabricated for determination of uranyl ion. The optode membrane is
prepared by incorporation of 1-(2-pyridylazo)-2-naphtol (PAN), tri-n-octyl phosphine oxide …

Results For 100 pg of uranium (V1) in the presence of 2 ml of 0.1 M DPTA solution, colour
saturation was achieved with 1.0 ml of 0.1% arsenazo I11 solution at pH 5.5. The …

A new bulk optical sensor, incorporating Piroxicam as a cation recognition and Alizarin as a
co-ionophore is reported for determination of trace amounts of uranyl ions (UO22+). The …

Two novel uranyl PVC matrix membrane sensors responsive to uranyl ion are described.
The first sensor incorporates tris (2-ethylhexyl) phosphate (TEHP) as both electroactive …

An optical sensor (optode) is described based on a plasticized poly (vinyl chloride)(PVC)
bulk membrane incorporating an uranyl ion-selective ionophore, an H+-selective …

Uranium (VI) can be extracted as a complex with rhodamine B into a benzeneetherhexone
solvent from a benzoate buffered solution. Optimum conditions for the colour development …

A short, sensitive and reliable spectrophotometric method, which has advantages over all
known “wet chemistry” methods for uranium determination with regard to tolerance to …