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- Haghighi, M., et al. Show all 3 Authors
- International journal of environmental science and technology 2015 v.12 no.12 pp. 3837-3842
- anions; least squares; models; nitrates; nitrites; spectrophotometers; sulfuric acid
- ... A simple and sensitive spectrophotometric method for simultaneous determination of nitrite and nitrate was introduced. The method is based on the reaction of nitrite and nitrate with 2,4-xylenol as reagent in the concentrated sulfuric acid. Calibration curves were linear in the range of 0.2–20.0 and 0.5–7.0 mg L⁻¹ for nitrite and nitrate, respectively. Due to the severe spectral overlapping of the ...