Authors: AA Ensafi, AFSANEH Safavi

Publication date: 1991/6/1

Journal name: Analytical letters

Volume: 24

Issue: 6

Pages: 1057-1073

Publisher: Taylor & Francis Group

Abstract The catalytic effect of molybdenum on the reduction of Nile blue by hydrazine is
utilized. The method is based on measuring the decrease in absorbance of Nile blue after
the fixed time of 3 min at 595 nm at 25° C. The interferences of various ions were studied
and a cation-exchange resin column was used to remove interfering ions. Five replicate
analyses of a sample containing 3 μ g. ml− 1 of molybdenum had a relative standard
deviation of 0.67%. The method enables rapid and reliable analysis of molybdenum over ...