Naslov
Influence of ascorbic acid on tin corrosion in sodium chloride solutions
(.)

Autori
Berković, Katarina ; Ciković, Nada ; Prejac, Sandra

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Meeting Abstracts, The 1997 Joint International Meeting / . - Singapur : London : München : Ženeva : Tokyo : Hong Kong : Taipei : Peking : Šangaj : Tianjin : Chennai : The Electrochemical Society (ECS), 1997

Skup
The 1997 Joint International Meeting: 48th Annual Meeting of I.S.E., 192nd Meeting E.C.S.

Mjesto i datum
Pariz, Francuska, 31.08.1997. - 05.09.1997

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
tin corrosion; ascorbic acid

Sažetak
Although many new, mainly polymer, packaging materials have been developed recently for foods, tinplate is still widely used for that purpose. Ascorbic acid is naturally present in foods as well as added to many food systems to preserve colour, because it reacts with oxygen from the air. Therefore it prevents Maillard reactions and stops, or reduces, natural browning. But, although a slightly corrosive substance it could also, as will be shown in this paper, slow down the corrosion process on tin in the systems containing sodium chloride. 0.3% w/w and 50, 100, 200 and 500 ppm NaCl and ascorbic acid (AA) were used, respectively. Continuing our previous work1, this paper was performed to show effect of either ascorbic acid and NaCl itself or its mixtures on tin electrode using electrochemical methods and weight loss measurements. The influence of pH, conductivity and oxygen content in model solutions is given, as well as electron exchange number calculation results to get an insight of mechanism of the reaction. A possible ascorbic acid-tin interaction mechanism is proposed. All experiments were carried out at room temperature.

Izvorni jezik
Engleski

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