Question

Which method is used to determine nitrate nitrogen method in
fertilizer
a) direct method
b) indirect method
c) titrimetric method
d) both a&b​

Answer 1

Explanation:

The methods used for the determination of nitrate nitrogen in plant materials have been adapted from methods used in the ana- lysis of soils and fertilizers. The one most used at present in- volves reduction by Devarda's alloy, and the determination by titration of the ammonia formed.