Abstract
The electrochemical behavior and application of a new sensor, a silver solid amalgam paste electrode (AgSA-PE), based on the mixture of a fine silver solid amalgam powder (60:40 (wH g /wA g )) and a suitable organic pasting liquid (Paraffin oil) in a ratio of 20:1 (w/w), was investigated in an aqueous-methanolic media (1:1). This alternative working electrode provides simple preparation and handling, adequate mechanical stability, easily renewable electrode surface, sufficiently wide cathodic potential window (up to -1200 mV within a pH range of 2.7 - 12.3), and sufficient sensitivity without any necessary pretreatment. The practical usability of the AgSA-PE was verified by the development of voltammetric methods for the determination of selected environmentally important pollutants (1,3-, 1,5-, and 1,8-dinitronaphthalenes) in an aqueous-methanolic media (1:1). The differential pulse voltammetric methods at AgSA-PE give linear concentration dependences in the range of 1 - 100 μmol l-1 with limits of detection of about 1 μmol l-1 in a mixture of Britton-Robinson buffer of appropriate pH and methanol (1:1).
| Original language | English |
|---|---|
| Pages (from-to) | 411-416 |
| Number of pages | 6 |
| Journal | Analytical Sciences |
| Volume | 28 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 1 Jan 2012 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Analytical Chemistry
Cite this
Voltammetric determination of dinitronaphthalenes using a silver solid amalgam paste electrode. / Tvrdikova, Jana; Danhel, Ales; Vyskocil, Vlastimil; Barek, Jiri.
In: Analytical Sciences, Vol. 28, No. 4, 01.01.2012, p. 411-416.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Voltammetric determination of dinitronaphthalenes using a silver solid amalgam paste electrode
AU - Tvrdikova, Jana
AU - Danhel, Ales
AU - Vyskocil, Vlastimil
AU - Barek, Jiri
PY - 2012/1/1
Y1 - 2012/1/1
N2 - The electrochemical behavior and application of a new sensor, a silver solid amalgam paste electrode (AgSA-PE), based on the mixture of a fine silver solid amalgam powder (60:40 (wH g /wA g )) and a suitable organic pasting liquid (Paraffin oil) in a ratio of 20:1 (w/w), was investigated in an aqueous-methanolic media (1:1). This alternative working electrode provides simple preparation and handling, adequate mechanical stability, easily renewable electrode surface, sufficiently wide cathodic potential window (up to -1200 mV within a pH range of 2.7 - 12.3), and sufficient sensitivity without any necessary pretreatment. The practical usability of the AgSA-PE was verified by the development of voltammetric methods for the determination of selected environmentally important pollutants (1,3-, 1,5-, and 1,8-dinitronaphthalenes) in an aqueous-methanolic media (1:1). The differential pulse voltammetric methods at AgSA-PE give linear concentration dependences in the range of 1 - 100 μmol l-1 with limits of detection of about 1 μmol l-1 in a mixture of Britton-Robinson buffer of appropriate pH and methanol (1:1).
AB - The electrochemical behavior and application of a new sensor, a silver solid amalgam paste electrode (AgSA-PE), based on the mixture of a fine silver solid amalgam powder (60:40 (wH g /wA g )) and a suitable organic pasting liquid (Paraffin oil) in a ratio of 20:1 (w/w), was investigated in an aqueous-methanolic media (1:1). This alternative working electrode provides simple preparation and handling, adequate mechanical stability, easily renewable electrode surface, sufficiently wide cathodic potential window (up to -1200 mV within a pH range of 2.7 - 12.3), and sufficient sensitivity without any necessary pretreatment. The practical usability of the AgSA-PE was verified by the development of voltammetric methods for the determination of selected environmentally important pollutants (1,3-, 1,5-, and 1,8-dinitronaphthalenes) in an aqueous-methanolic media (1:1). The differential pulse voltammetric methods at AgSA-PE give linear concentration dependences in the range of 1 - 100 μmol l-1 with limits of detection of about 1 μmol l-1 in a mixture of Britton-Robinson buffer of appropriate pH and methanol (1:1).
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U2 - 10.2116/analsci.28.411
DO - 10.2116/analsci.28.411
M3 - Article
VL - 28
SP - 411
EP - 416
JO - Analytical Sciences
JF - Analytical Sciences
SN - 0910-6340
IS - 4
ER -