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Determination of chloride and nitrate in butter, margarine, cheese and meat products using ion selective electrodes

✍ Scribed by Ayranci, E. ;Balci, Ö.


Publisher
John Wiley and Sons
Year
1993
Tongue
English
Weight
270 KB
Volume
37
Category
Article
ISSN
0027-769X

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✦ Synopsis


Chloride analysis was quite easy and salt contents of all butter and margarine samples were found to be less than 2 g NaCl/kg while those of cheese and meat products were above 10 g/kg. Nitrate analysis was not as easy as chloride analysis due to interferences of chloride and organic ions. These interferences were tried to be eliminated using either AI,(SO,), and Ag,SO, solutions or aluminium and silver resins. Results showed that the elimination of interferences is most effective with the use of resins in amounts of 3 g under the present experimental conditions. Nitrate contents of meat products analysed were found to be less than 20 ppm.

Zusammenfassung

Bestimmung von Chlorid und Nitrdt in Butter, Margarine, Kase und Fleischprodukten unter Verwendung ionenselektiver Elektroden Die Chloridanalysen verliefen ohne Schwierigkeiten. Wahrend die ermittelten Salzgehalte aller Butter-und Margarineproben unter 2 g NaCl/kg lagen, enthielten die untersuchten Proben von Kase und von Fleischprodukten iiber 10 g/kg. Die Nitratanalysen waren wegen der Storungen durch Chlorid und organische Ionen schwieriger durchzufiihren. Es wurde versucht, diese Storungen unter Einsatz von AI,(SO,),und Ag,SO,-Losungen oder von Aluminium-und Silberharzen zu eliminieren. Die Ergebnisse haben gezeigt, daD die Storungen unter den vorliegenden experimentellen Bedingungen am besten unter Zusatz von 3 g Harz ausgeschaltet werden konnten. Die Nitratgehalte der untersuchten Fleischprodukte lagen unter 20 ppm.


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