Application of thallium(I) as an internal standard redox process in voltammetric measurements

Pižeta, Ivanka; Omanović, Dario; Branica, Marko

doi:10.1016/0003-2670(96)00212-7

Cited by 11 publications

(4 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The electrochemical cell with a three-electrode system was used in all measurements. The working electrode was a static mercury drop electrode (SMDE) PAR 303A with a modified holder for the electrode components [30]. The reference electrode was an AgjAgClj(sat.…”

Section: Instrumentationmentioning

confidence: 99%

Pseudopolarography of trace metals. Part II. The comparison of the reversible, quasireversible and irreversible electrode reactions

Omanović

Branica

2004

Journal of Electroanalytical Chemistry

View full text Add to dashboard Cite

Section: Instrumentationmentioning

confidence: 99%

Pseudopolarography of trace metals. Part II. The comparison of the reversible, quasireversible and irreversible electrode reactions

Omanović

Branica

2004

Journal of Electroanalytical Chemistry

View full text Add to dashboard Cite

“…So far, there are many methods available to determine thallium, such as the Chelex-100 resin separating method (Lin and Nriagu, 1999b), and the electrochemical method (Pizeta et al, 1996;Hassanien et al, 2003). Tl(I) is one of the few inorganic ions which fluoresces under UV light, but Tl(III) in contrast is not fluorescent, therefore, Tl(I) can be determined directly by fluorospetrophotometry (Ensafi and Rezaei, 1998;Tomás et al, 1996).…”

Section: Discussionmentioning

confidence: 99%

Photochemical reaction of Tl in aqueous solution and its environmental significance

Zhenmin

Zhu

et al. 2005

Geochem. J.

View full text Add to dashboard Cite

The valence state of thallium determines its toxicity, distribution and mobility. Tl(I) can be oxidized to Tl(III) under photoirradiation of the high-pressure mercury arc lamp and solar light. A photooxidation experiment of thallium showed that the photooxidation rate could be affected by the pH of the solution, and the intensity and wavelength of the light source. Lowering the pH and increasing the light intensity have the effect of increasing the photooxidation rate. UV radiation (UVB and UVC regions) plays an important role in the photooxidation of Tl(I). However, the microbial effect is not obvious in comparison with photooxidation effect in this experiment. The study can provide important scientific groundwork for handling of thallium pollution.

show abstract

“…But they are commonly used in medicines for dermatological disorders, dyes, pigments, fungicides, insecticides, rodenticides and as reagents in chemical research [4]. They are also used in the manufacture of corrosion-resistant alloys, scintillation counters and low-melting special glass for highly reflective lenses [5][6][7][8]. The increasing applications of thallium compounds can cause human exposure to thallium substances.…”

Section: Introductionmentioning

confidence: 99%

Determination of thallium in environmental samples by surfactant assisted dispersive liquid-liquid microextraction combined with first order derivative spectrophotometry

2015

View full text Add to dashboard Cite

A surfactant assisted dispersive liquid-liquid microextraction (SA-DLLME) combined with derivative spectrophotometric method has been proposed for the determination of thallium(III) using a chelating agent diacetylmonoxime-p-hydroxybenzoylhydrazone. Disperser solvent was substituted by surfactant, which made the emulsification more effective and extraction, quite environment friendly. Carbon tetrachloride was employed as the extractant. The developed SA-DLLME technique was coupled with first order derivative spectrophotometric method to improve the analytical performance. Optimum conditions relevant to SA-DLLME and instrumental parameters were studied in detail. The enrichment factor of the method was found to be 23. The limit of detection and quantitation limit of first order derivative spectrophotometric method were found to be 0.22 and 0.67 µg/L, respectively. The relative standard deviation (RSD) for five replicates of 50.0 µg/L of thallium(III) was found to be 1.12%. The applicability of the method was evaluated by the trace level determination of thallium in different environmental samples.

show abstract

Application of thallium(I) as an internal standard redox process in voltammetric measurements

Cited by 11 publications

References 14 publications

Pseudopolarography of trace metals. Part II. The comparison of the reversible, quasireversible and irreversible electrode reactions

Pseudopolarography of trace metals. Part II. The comparison of the reversible, quasireversible and irreversible electrode reactions

Photochemical reaction of Tl in aqueous solution and its environmental significance

Determination of thallium in environmental samples by surfactant assisted dispersive liquid-liquid microextraction combined with first order derivative spectrophotometry

Contact Info

Product

Resources

About