et.al ALMR. Application of Normal and Derivative Ultraviolet Absorption Spectroscopy for the Determination of Six Polyaromatic Hydrocarbons in Tigris River. QJPS [Internet]. 2017Jul.22 [cited 2024Apr.29];19(2):97-103. Available from: https://journalsc.qu.edu.iq/index.php/JOPS/article/view/184