Abstract
Galinstan is a new kind of electrode material and the galinstan electrode is a promising alternative to the commonly used mercury electrodes. The eutectic mixture of gallium, indium and tin is liquid at room temperature (m.p. −19°C) and its voltammetric behaviour is similar to that of mercury. The potential windows of use were determined for different pH values and are similar to those obtained with conventional mercury electrodes. Furthermore, the high hydrogen overpotential, which is characteristic for mercury, can be observed when galinstan is used as electrode material. Galinstan can be employed as a liquid electrode in the voltammetric analysis of different metal ions, such as lead and cadmium, in different supporting electrolytes. Our results indicate that the non-toxic liquid alloy galinstan could therefore become immensely important in electrochemical research as a potential surrogate material for mercury.
Abbreviations
- HMDE:
-
hanging mercury drop electrode
- DME:
-
dropping mercury electrode
- SMDE:
-
static mercury drop electrode
- MFE:
-
mercury film electrode
- HGDE:
-
hanging galinstan drop electrode
References
Kemula W, Kublik K (1958) Z Anal Chim Acta 18:81–82
Berzins T, Delahay P (1955) J Am Chem Soc 77:6448–6453
Müller RH, Petras JF (1938) J Am Chem Soc 60:2990–2993
Lingane JJ, Kolthoff IM (1939) J Am Chem Soc 61:825–834
Peterson WM (1979) Am Lab (Fairfield Conn) 11:69–78
Anderson JE, Bond AM, Jones RD (1981) Anal Chem 53:1016–1020
Moros SA (1962) Anal Chem 34:1584–1587
Copeland TR, Christie JH, Skogerboe RK, Osteryoung RA (1973) Anal Chem 45:995–996
Shi K, Shiu KK (2002) Anal Chem 74:879–885
Ravichandran K, Baldwin RP (1984) Anal Chem 56:1744–1747
Surmann P, Wenders G (1993) Fresenius Z Anal Chem 346:914–918
Surmann P, Wenders G (1996) Fresenius Z Anal Chem 354:296–298
Zoski CG (2003) J Phys Chem B 107:6401–6405
Möllencamp H, Huntemann H, Jansen W (1999) Monatshefte für Chemie 130:741–751
Karlsson M, Nolkrantz K, Davidson MJ, Strömbberg A, Ryttsen F, Akerman B, Orwar O (2000) Anal Chem 72:5857–5862
Knoblauch M, Hibberd JM, Gray JC, van Bel AJE (1999) Nature Biotechnology 17:906–909
Speckbrock et al (1998) US patent 5800060 http://www.geratherm.de
American Conference of Governmental Industrial Hygienists (1994) Occupation Safety and Health Reporter 26–35
Acknowledgements
We are exceedingly grateful to Mr Haribert Schmitt from Geratherm Medical, and would like to thank him for his cooperation and for providing us generously with galinstan.
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Surmann, P., Zeyat, H. Voltammetric analysis using a self-renewable non-mercury electrode. Anal Bioanal Chem 383, 1009–1013 (2005). https://doi.org/10.1007/s00216-005-0069-7
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DOI: https://doi.org/10.1007/s00216-005-0069-7