ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

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)