A simple and selective spectrophotometric flow injection determination of trace amounts of ruthenium by catalytic oxidation of safranin-O

Spectrophotometric Determination of Trace Ruthenium by its Catalytic Effect on Oxidation of Switzerland Pigment with KIO₄

“…The influence of most common ions on the catalytic determination of Ru (III) has been examined. When the tolerance limit was defined as the concentration of added ions causing a relative error less than 3 %, the presence of following ions caused no interference with the determination of 0.02 µg/25 mL of Ru (III), at least up to the specified amounts (µg): K + , Na + , NH 4 + , Cl -, F -, NO 3 -, PO 4 3-(1000), Li + , Br -(800), Ca 2+ , Cu 2+ , Mg 2+ , Ba 2+ , Sr 2+ , Pb 2+ , Ac -(200), Cd 2+ , In 3+ (160), Th (IV) (100), Ag + , Mn(II), Au(III), Ti(IV) (40), Co 2+ , Hg 2+ , Bi 3+ , Ce(IV), Ge(IV), V(V)(30); Cr(III), Te(IV), I -(20), Ni 2+ , Fe(II), Zn 2+ , Al 3+ , Fe(III), As(III), Sb(III), Ga(III), Cr(VI), NO 2 - (10), Se (IV), Sn (II), Pt(IV), Rh(IV), Sn (IV)(1), Pd(II) (0.5), Ir(III), Os(VIII) (0.1). More than 0.5 µg Pd (II), 0.1 µg Ir(III), Os(VIII) had an accelerating effect on the system.…”

“…Although these instruments are highly expensive, day-to-day maintenance is high, and the methods are not free from various types of inherent interferences. Many spectrophotometric methods have been used for determination of Ru(III) via its catalytic effect on the oxidation of dyes, such as, L-phenylalanine [9], safranin O [10], dimethyl yellow [11], 2-pyridine carboxaldehyde benzoylhydrazone [12], tris(2-aminoethyl)amine [13] by some oxidants. All of these methods have interferences effect or high limit of detection.…”

New valid spectrofluorimetric method for determination of selected cephalosporins in different pharmaceutical formulations using safranin as fluorophore

“…Catalytic effect of metal ions on the oxidation of safranin was utilized for the spectrophotometric or spectrofluorimetric determination of several metal ions such as ruthenium [27] iron [28] mercury [29] and copper [30]. Recently, complex formation of safranin with some pharmaceutical compounds was reported for the spectrophotometric determination of rosuvastatin [31] and spectroflourimetric determination of certain aminoglycosides antibiotic [32].…”

Dialkylmethyl-2-(N,N-diisobutyl)acetamidoammonium iodide as a ruthenium selective ligand from nitric acid medium

“…This also causes corrosion at the inner steel surface [5]. One of the isotopes of ruthenium, 106 Ru, also has application in radiotherapy of tumors [6][7][8][9]. Solvent extraction is a well known practice for separation of radionuclides from waste solution.…”