Vol. 8, No 1, 2010 pp. 15 - 24
DOI 10.2298/FUPCT1001015S
UDC 535.243 : 546.824
A NEW SPECTROPHOTOMETRIC METHOD FOR THE DETERMINATION OF TRACE AMOUNTS OF TITANIUM(IV)
Vinnakota Srilalitha1, Aluru Raghavendra Guru Prasad2, Kakarla Raman Kumar3, Vahi Seshagiri4, Lakshmana Rao Krishna Rao Ravindranath4
1C.M.R. Institute of Technology, Hyderabad, A.P., India
2ICFAI Foundation for Higher Education, Hyderabad, A.P., India
3Malla Reddy College of Engineering, Hyderabad, A.P., India
4Sri Krishnadevaraya University, Anantapur, A.P., India
Abstract. A new, rapid, simple, precise and extraction-free spectrophotometric method is proposed for the micro determination of titanium(IV) employing N'-(2-hydroxybenzylidene)-3-oxobutanehydrazide as a reagent. Under the optimum conditions established, the absorbance was found to increase linearly with the concentration of titanium(IV) in the range 1.757 to 17.57 µg mL−1. The method parameters such as the molar absorptivity, Sandel sensitivity, stoichiometry of the complex, method detection limit and limit of quantification were reported. The reproducibility of the method was excellent and recoveries reported were ranging from 102 to 104%. The proposed method can be readily applied for the determination of titanium(IV) in synthetic mixtures and alloys.
Key words: spectrophotometry, titanium(IV), synthetic mixtures, alloys
NOVA SPEKTROFOTOMETRIJSKA METODA ZA ODREĐIVANJE TITANA(IV) U TRAGOVIMA
Predložena je nova, brza i precizana spektrofotometrijska metoda (koja ne zahteva ekstrakciju), zasnovana na primeni N'-(2-hidroksibenziliden)-3-oksobutanhidrazida (HBOBH) kao reagesa, za određivanje mikrokoličina titana(IV). Pod unapred određenim optimalnim uslovima, pokazano je da u opsegu od 1,757 do 17,57 µg mL−1 absorbanca linearno raste sa porastom koncentracije titana(IV). Utvrđeni su i parametri metode kao što su molarna apsorptivnost, Sendel-ova osetljivost, stehiometrija kompleksa, granica detekcije i granica kvantifikacije. Reproduktivnost metode je bila odlična, a "recovery" se kretao u opsegu od 102 do 104%. Predložena metoda je primenljiva za određivanje titana(IV) u sintetičkim smešama i legurama.
Ključne reči: spektrofotometrija, titan(IV), sintetičke smeše, legure
