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Capillary Electrophoresis with indirect amperometric detection

✍ Scribed by Teresa M. Olefirowicz; Andrew G. Ewing

Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
423 KB
Volume
499
Category
Article
ISSN
1873-3778

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✦ Synopsis

The use of indirect amperometric detection with capillary electrophoresis is demonstrated.

The system consists of a porous glass coupler which allows amperometric detection at a carbon fiber electrode placed in the end of the capillary. 3,4_Dihydroxybenzylamine is added to the buffer system as a continuously eluting electrophore.

Indirect amperometric detection in 9-pm I.D. capillaries provides detection limits as low as 380 attomole for the amino acid arginine. Finally, both direct and indirect amperometric detection can be accomplished simultaneously.

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