Abstract
The corrosion of aluminium (A1) in several brands of soft drinks (cola- and citrate-based drinks) has been studied, using an electrochemical method, namely potentiodynamic polarization. The results show that the corrosion of A1 in soft drinks is a very slow, time-dependent and complex process, strongly influenced by the passivation, complexation and adsorption processes. The corrosion of A1 in these drinks occurs principally due to the presence of acids: citric acid in citrate-based drinks and orthophosphoric acid in cola-based drinks. The corrosion rate of A1 rose with an increase in the acidity of soft drinks, i.e. with increase of the content of total acids. The corrosion rates are much higher in the cola-based drinks than those in citrate-based drinks, due to the facts that: (1) orthophosphoric acid is more corrosive to A1 than is citric acid, (2) a quite different passive oxide layer (with different properties) is formed on A1, depending on whether the drink is cola or citrate based. The method of potentiodynamic polarization was shown as being very suitable for the study of corrosion of A1 in soft drinks, especially if it is combined with some non-electrochemical method, e.g. graphite furnace atomic absorption spectrometry (GFAAS).
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Severus H (1990) In: Massey RC, Taylor D (eds) Aluminium in food and the environment. Royal Society of Chemistry London, pp 88–101
Martyn CN (1992) In: Aluminium in biology and medicine. Ciba Foundation Symposium 169. Wiley, Chichester, pp 69–86
Kerr DNS, Ward MK, Ellis HA, Simpson W, Parkinson IA (1992) In: Aluminium in biology and medicine. Ciba Foundation Symposium 169. Wiley, Chichester, pp 123–141
Greger JL (1985) Food Technol 39: 73–80
Pennington JAT (1987) Food Addit Contam 5: 161–232
Liukkonen-Lilja H, Piepponen S (1992) Food Addit Contam 9: 213–223
Jorhem L, Haegglund G (1992) Z Lebensm Unters Forsch 194: 38–42
Duggan JM, Dickeson JE, Tynan PF, Houghton A, Flynn JE (1992) Med J Aust 156: 604–605
Müller JP, Steinegger A, Schlatter C (1993) Z Lebensm Unters Forsch 197: 332–341
Šeruga M, Grgić J, Mandić M (1994) Z Lebensm Unters Forsch 198: 313–316
The Steering Group on Chemical Aspects of Food Surveillance, the 39th report. (1994) Food Chem Toxicol 32: 391–395
Sugden JK, Sweet N (1989) Pharm Acta Helv 64: 130–132
EG & G Princeton Applied Research (1989) SoftCorr software M342. EG & G PAR, Princeton, N.J., USA
Shreir LL (1976) Corrosion, vol 1. Newnes-Butterworths, London, pp 4: 3–4: 32; 9: 47–9: 48
öhman L-O, Sjöberg S (1983) J Chem Soc Dalton Trans 2513–2517
Öhman L-O (1988) Inorg Chem 27: 2565–2570
Martin RB (1991) In: Nicolini M, Zatta PF, Corain B (eds) Aluminium in chemistry biology and medicine. Cortina International Verona and Raven Press, New York, pp 1–20
Martin RB (1994) Acc Chem Res 27: 204–210
Öhman L-O, Martin RB (1994) Clin Chem 40: 598–601
Dayde S, Filella M, Berthon G (1990) J Inorg Biochem 38: 241–259
Vijh AK (1969) J Phys Chem 73: 506–513
Alwitt RS (1976) In: Diggle JW, Vijh AK (eds) Oxides and oxide films, vol 4. Dekker, New York, pp 169–254
Wood GC (1972) In: Diggle JW (ed) Oxides and oxide films, vol 2. Dekker, New York, pp 167–279
Hutchins GA, Chen CT (1986) J Electrochem Soc 133: 1332–1337
Parks GA (1965) Chem Rev 65: 177–198
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Šeruga, M., Hasenay, D. Corrosion of aluminium in soft drinks. Z Lebensm Unters Forch 202, 308–312 (1996). https://doi.org/10.1007/BF01206102
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF01206102