A study of extraction-spectrophotometric method for the determination of trace nitrite
as 4-(4-nitrobenzenazo)-1-aminonaphthalene complex using n-amylalcohol as organic solvents
has been conducted.
Results of the study showed that extraction-spectrophotometric determination of nitrite
using n-amylalcohol had high sensitivity and low limit of detection. This method produced linear
concentration of 0.000 - 0.054 mg/l NO2—N; detection limit of 2.09x10-4 mg/l NO2—N; and
sensitivity of 34.514 ± 0.398 absorbance unit per mg/l of NO2--N.