title: Sensitive adsorptive stripping voltammetric method for determination of trace concentration of titanium in the presence of chloranilic acid as a complexing agent.
abstract: This paper reports a new adsorptive voltammetric procedure of trace titanium determination using (Hg(Ag)FE) as a working electrode and chloranilic acid as a complexing agent. The reduction peak current of the complex was proportional to the concentration of Ti(IV) in the concentration range from 1×10(-8)molL(-1) to 5×10(-7)molL(-1). Parameters that affect the titanium response, including solution pH, chloranilic acid concentration, accumulation potential and accumulation time, were optimized. Under optimum conditions the detection limit was 3.5×10(-9)molL(-1) after 30s accumulation time. Under optimized conditions the quantitative Ti(IV) determination in the presence of as little as 30 ppm of nonionic, 20 ppm of anionic and 10ppm of cationic of surface active compounds, and 20ppm of natural organic matter can be performed. The proposed method was validated in the course of studying the recovery of Ti(IV) from spiked natural water samples.
authors.affiliation: Department of Analytical Chemistry and Instrumental Analysis, Chemical Faculty, Maria Curie-Sklodowska University, 20-031 Lublin, Poland. Electronic address: mgrabarc@poczta.umcs.lublin.pl.
authors.forename: Malgorzata
authors.initials: M
authors.lastname: Grabarczyk
authors.affiliation: Department of Analytical Chemistry and Instrumental Analysis, Chemical Faculty, Maria Curie-Sklodowska University, 20-031 Lublin, Poland.
authors.forename: Joanna
authors.initials: J
authors.lastname: Wasąg
keywords: Adsorptive stripping voltammetry; Chloranilic acid; Determination; Titanium (IV)