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

Locatelli, Clinio; Fagioli, Francesco; Garai, Tibor; Bighi, C.

doi:10.1021/ac00172a017

Cited by 9 publications

(5 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The experimental conditions of the analysis are listed in Table I. In alternating current voltammetry, the proper adjustment of the phase angle of the faradaic current permits the virtually complete elimination of the capacitive current (32)(33)(34). Figure 1 shows an example of three typical voltammograms obtained by differential pulse, by fundamental, and by second harmonic alternating current adsorption voltammetry.…”

Section: Methodsmentioning

confidence: 99%

“…Precision, expressed as the relative standard deviation, accuracy, expressed as the relative error, and the detection limits are also reported in Tables II and III. It has been shown in earlier communications (32,33) that the standard addition method permitted the determination of an element even in the presence of an interfering component in an excess beyond the limit of validity of the bivariate regression functions. In such cases, the concentration of the minor constituent is increased by successive standard additions until the concentration ratio of the two components is modified so that an extrapolation of the measured currents permits the evaluation of the concentration of the minor constituent.…”

Section: Table II Analytical Calibration Curves0mentioning

confidence: 99%

“…It can be concluded that in adsorption voltammetry, as in polarography (35) and in anodic stripping voltammetry (31)(32)(33), the second harmonic alternating current technique permits us to attain the highest selectivity.…”

Section: Practical Applicationsmentioning

confidence: 99%

“…In view of the increasing interest in adsorption voltammetry, it was deemed worthwhile to compare the performance of various voltammetric techniques such as differential pulse voltammetry and fundamental and second harmonic alternating current voltammetry, since the latter techniques were seldom used in adsorption voltammetry, although they were found to have definite advantages regarding the selectivity of the analysis (31)(32)(33)(34)(35). The simultaneous determination of cobalt and nickel, especially in the case of a large excess of one element as compared to the other, was found to be well-suited for this kind of study since the reduction potentials of the DMG complexes of those two elements are very close.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Peak resolution in the determination of cobalt and nickel by differential pulse and alternating current adsorption voltammetry

Locatelli¹,

Fagioli²,

Garai³

1991

Anal. Chem.

Self Cite

View full text Add to dashboard Cite

The simultaneous determination of cobalt(II) and nlckel(II) by differential pulse adsorption voltammetry and fundamental and second harmonic alternating current adsorption voltammetry was compared In the case of very high element concentration ratios. The measurements were carried out In 0.5 M ammonia buffer-1 X 10"4 M dlmethylgtyoxlme (DMG) as the supporting electrolyte, employing a semistatlonary mercury electrode with a drop time of 180-240 s (the long lasting sessile drop mercury electrode) as the working electrode. The accuracy of the analytical procedure was checked by the analysis of the standard reference materials: stainless steel (AISI 321) SRM 121-d and highly alloyed steel (Eurostandard 281-1). The precision, expressed as the relative standard deviation, and the detection limits were also reported for each voltammetric technique. The selectivity of the above-mentioned three techniques was found to Increase In the following order: second harmonic alternating current adsorption voltammetry > differential pulse adsorption voltammetry > fundamental harmonic alternating current adsorption voltammetry.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Table II Analytical Calibration Curves0mentioning

confidence: 99%

Section: Practical Applicationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Peak resolution in the determination of cobalt and nickel by differential pulse and alternating current adsorption voltammetry

Locatelli¹,

Fagioli²,

Garai³

1991

Anal. Chem.

Self Cite

View full text Add to dashboard Cite

show abstract

“…The determination method of titanium includes FAAS method [2], GFAAS method [3], ICP-AES method [4], indirect AAS method [5], derivative spectrophotometry [6], hydrogen peroxide-photometric method [7], alternating current voltammetry method [8], gravimetric method [9], titration method [10] and etc.. In the above methods, the hydrogen peroxide photometric method was widely used in determination of titanium in various metal or alloy materials, which had advantages of being fast, accurate, cheap and easy to operate.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen peroxide photometric analysis of titanium in vanadium alloy

Yang¹,

Tang²,

Wei³

et al. 2015

Proceedings of the 2015 6th International Conference on Manufacturing Science and Engineering

View full text Add to dashboard Cite

The hydrogen peroxide photometric method for analyzing main constituent titanium in vanadium alloy were investigated in the paper, including the sample digestion method, chromogenic conditions, Lambert-Beer's law range, matrix interferences, method precision, recovery of standard addition, sample analysis and comparison analysis. The method precision in RSD% was 2.6%, the recoveries of standard addition were from 98.7%-99.4%. The experimental results indicated that the proposed method for determination of titanium in vanadium alloy was simple, fast, accurate, and easy to operate, which was suitable for quality control of vanadium alloy.

show abstract

Determination of metals in a multicomponent system by differential pulse and alternating current anodic stripping voltammetry

Locatelii¹,

Vasca²,

Bighi³

et al. 1996

Electroanalysis

View full text Add to dashboard Cite

A combination of sensitive and selective voltammetric methods, namely differential pulse (DPASV) and fundamental and second harmonic alternating current anodic stripping voltammetry (ACASV) were found to be very suitable techniques for the simultaneous determination of metal species having half-wave potentials close to one another. The simultaneous determination of traces of Cu", Bi"', Sb"', Pb", Cd" and Sn" is described using 0.1 M HC1 as the supporting electrolyte with the subsequent addition of 0.02 M EDTA or I .O M NaOH (for the analysis of Cu", Sb"' and Sn", respectively). A semistationary mercury electrode (long lasting sessile drop mercury electrode) was used as the working electrode. A saturated calomel electrode (SCE) and a platinum electrode were used as the reference and auxiliary electrodes, respectively. The analytical procedure was verified with the analysis of standard reference material NBS-SRM 63 1 Spectrographic Zinc Spelter LVl. Precision and accuracy, expressed as relative standard deviation and relative error, respectively, were 3 to 5%, while the detection limits were of the order of 10-8 to M in the case of element examined.

show abstract

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

Abstract: weight and large size of the ion association molecule. ACKNOWLEDGMENTWe express our deep thanks to .

Cited by 9 publications

References 27 publications

Peak resolution in the determination of cobalt and nickel by differential pulse and alternating current adsorption voltammetry

Peak resolution in the determination of cobalt and nickel by differential pulse and alternating current adsorption voltammetry

Hydrogen peroxide photometric analysis of titanium in vanadium alloy

Determination of metals in a multicomponent system by differential pulse and alternating current anodic stripping voltammetry

Contact Info

Product

Resources

About