The proposed method employs only one reagent (HClO4) in a minimum amount (equivalent to 18L concentrated acid per determination), and allowed nitrate determination within 0.50–25.0 mg L −1,
The proposed method employs only one reagent (HClO4) in a minimum amount(equivalent to 18L concentrated acid per determination), and allowed nitrate determination within 0.50–25.0 mg L−1,