A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is
A spectrophotometric method for the assay of micro amount of 1naphthylamine (1-NPA) has been suggested .The method based on the reaction with nitrite ion to form the corresponding diazonium salt followed by coupling reaction in a alkali medium of sodium hydroxide with 8-hydroxyquaniline to form stable and a soluble orange azo dye. The intensity of absorbance for the resulting orange azo dye is measured at 492.5 nm and. Beer's law is obeyed in the concentration range of 2.5-125 g of 1-NPA in adoi:10.33899/edusj.2020.164359 fatcat:6i4zd6msc5gspgqaiwrbigqepy