Trace level determination of titanium in real samples by alternating current voltammetry

Journal Article · Tue Nov 01 00:00:00 EST 1988 · Anal. Chem.; (United States)

DOI:https://doi.org/10.1021/ac00172a017· OSTI ID:6149221

Locatelli, C; Fagioli, F; Garai, T; Bighi, C

The fundamental and second harmonic alternating current voltammetric determination of titanium(IV) in the presence of a large excess of iron(III) is reported. The measurements were carried out with a semistationary mercury electrode (long-lasting sessile-drop mercury electrode) as the working electrode. The analytical procedure was controlled by the analysis of standard reference materials: Portland cement BCS 372, stainless steel (AISI 321) SRM 121 d, and highly alloyed steel (Eurostandard 281-1). The confidence interval of the experimental data was in agreement with the certified values for the titanium(IV) content of the samples. The precision, expressed by the relative standard deviation, and the accuracy, expressed by the relative error, were on the order of 3-5%. The standard addition technique was found to improve the resolution of alternating current voltammetric methods, even in the case of very high c/sub Fe:c/sub Tl/ concentration ratios.

• Research Organization: Univ. of Ferrara (Italy)
• OSTI ID: 6149221
• Journal Information: Anal. Chem.; (United States), Vol. 60:21
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
TITANIUM
VOLTAMETRY
ELECTRODES
EXPERIMENTAL DATA
IRON
QUANTITATIVE CHEMICAL ANALYSIS
RESOLUTION
TRACE AMOUNTS
CHEMICAL ANALYSIS
DATA
ELEMENTS
INFORMATION
METALS
NUMERICAL DATA
TRANSITION ELEMENTS
400102* - Chemical & Spectral Procedures
400400 - Electrochemistry