1. Fundamentals of Analytical Chemistry;Skoog,2014
2. Handbook of Spectroscopy;Gauglitz,2017
3. Workman, Chemometrics in Spectroscopy;Mark,2018
4. UV-Visible Spectrophotometry of Water and Wastewater;Thomas,2017
5. Determination of Nitrite. Molecular Absorption Spectrometric Method;ISO 6777 Water quality,1984