Authors: Ali A Ensafi, MS Kolagar

Publication date: 1995/5/1

Journal name: Analytical letters

Volume: 28

Pages: 1245-1260

Publisher: Taylor & Francis Group

Abstract Nitrite ion can be determined with a high degree of accuracy and sensitivity by
differential pulse polarography, based on the catalytic effect of nitrite on the oxidation of Nile
blue A in the presence of sodium bromate at acidic media and 25° C. The reaction rate was
monitored by measuring the differential pulse polarography peak current of the Nile blue A.
Nitrite concentration of 2-2000 ng. ml− 1 can be determined by the fixed time method of 3
min from initiation of the reaction. The limit of detection was 0.4 ng. ml− 1. The effects of ...