Product category:
Materials Testing
News Release from: Metrohm UK | Subject: 797 VA Computrace
Edited by the Manufacturingtalk Editorial
Team on 18 August 2006
Vitamin C determined by ion
chromatography
The content of vitamin C of vegetables, juices and other food can be determined by titration, ion chromatography or polarography.
Vitamin C is the L-enantiomer of ascorbic acid Our body cannot synthesize and store vitamin C
This article was originally published on Manufacturingtalk on 13 Sep 2006 at 8.00am (UK)
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Therefore it is essential to obtain it from the food we are consuming daily.
Ascorbic acid and its sodium, potassium and calcium salts possess antioxidant properties.
They can prevent reactive oxygen species (ROS, for example hydrogen peroxide) from damaging our body cells by taking up their reactive electrons.
Drinks, fruit and vegetable juices are natural sources of vitamin C.
Amongst vegetables, curly kale, paprika and tomatoes are very rich in vitamin C.
The content of vitamin C of vegetables, juices and other food can be determined by titration, ion chromatography or polarography.
The analysis by polarography is very selective as other reducing or oxidising substances do not interfere.
By using a 797 VA Computrace various polarographic and voltammetric methods are at hand and moreover you are given all the necessary electrodes for performing hundreds of applications.
Just a simple digestion is necessary prior to the determination of vitamin C in vegetables.
The analysis is done by differential pulse polarography (DPP) at a dropping mercury electrode (DME).
Just choose the method in the built-in database of your 797 VA Computrace.
With a single mouse click all settings are done and you can start measuring.
Product information MVA-2 system intended for partly automated routine analysis and consisting of the 797 VA Computrace and two 800 Dosinos. Request a free brochure from Metrohm UK ...
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