03073nas a2200277   4500008004100000022001400041245020500055210006900260260000800329300001100337490000800348520203700356653001802393653001102411653001902422653003702441653002302478100002202501700002302523700002402546700002302570700002602593700002802619700002802647856012002675       2020                        eng d  a1386-142500aHighly reproducible, simple and selective analytical method for extractive UV-visible spectrophotometric determination of ruthenium (III): analysis of catalyst, fissium alloy and sequential separation0 aHighly reproducible simple and selective analytical method for e  cDEC  a1188140 v2433 a<p>An easy and selective method has been developed for the extractive spectrophotometric determination of ruthenium(III) with 4-(4'-flurobenzylideneimino)-3-methyl-5-mercapto-1,2,4-triazole (FBIMMT) as a chelating reagent. The basis of the method is the formation of stable complex of `soft base' FBIMMT with `soft acid' ruthenium(M). The reagent FBIMMT in n-butanol easily forms extractable yellow coloured complex with ruthenium(III) in acetate buffer of pH 4.8. The absorbance of [Ru(III)-FBIMMT] complex is measured at 394 nm against the reagent blank. Good linearity range of concentration up to 27.0 mu g mL(-1) of ruthenium(III) is attained with correlation coefficient R-2 = 0.998. The optimum concentration range is 6 to 27.0 mu g mL(-1) which is deduced by Ringbom's plot. The apparent molar absorptivity found to be 2.75 x 10(3) L mol(-1) cm(-1). Some additional characteristics such as limit of detection (LOD = 0.48 mu g mL(-1)), limit of quantification (LOQ = 1.19 mu g mL(-1)), and Sandell's sensitivity (SS = of 0.0367 mu g cm(-2)) arc also estimated. The composition of [Ru (III)-FBIMMT1 complex has been established from Job's continuous variation method, mole ratio method, and log-log plot method. The specificity towards ruthenium(III) is well studied and appropriate masking agents are applied wherever required to boost it. The intra-day and inter-day precision values are found to be brilliant with % relative standard deviation of 0.52 and 0.68 respectively with % accuracy within the range of 99.00-100. The method is effectively used for determination of ruthenium(III) from water samples, binary and ternary synthetic mixtures, fissium alloy samples and catalyst materials. A scheme for sequential group separation of ruthenium(III), palladium(II) and osmium (VIII) has also been developed. The reproducible results of the present method confirm that the method has a good potential for quantitative determination of ruthenium(III) from various matrices. (C) 2020 Elsevier B.V. All rights reserved.</p>
10aAlloy samples10aFBIMMT10aRuthenium(III)10aSpectrophotometric determination10aSynthetic mixtures1 aShaikh, Abdul, B.1 aBarache, Umesh, B.1 aKhogare, Balaji, T.1 aGoswami, Ritusmita1 aKokare, Balasaheb, N.1 aWadgaonkar, Prakash, P.1 aGaikwad, Shashikant, H.  uhttps://library.ncl.res.in/content/highly-reproducible-simple-and-selective-analytical-method-extractive-uv-visible