ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
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Determination of nitrates in biological-material

J. Chýlková, V. Říha, and L. Fidlerová

Department of Environment of Chemical Industry, Institute of Chemical Technology, CS-53210 Pardubice

 

Abstract: A procedure for preliminary processing of biological samples for determination of nitrates by photometric titration has been worked out. The aqueous suspension of the homogenized sample was boiled for 2 to 3 min and subjected to electrodialysis in a special separator for 5 to 10 min. The nitrates migrated at the voltage of 12 V to the anode compartment in the electrolyte composed of 0.1 M-Na2SO4 and 0.01 M-H2S04 . Being thus separated from the interfering components (amino acids, proteins), they were determined after reduction to NH3 by photometric microtitration.

Full paper in Portable Document Format: 445a635.pdf

 

Chemical Papers 44 (5) 635–642 (1990)

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