Abu-Shammla, Farida. “Calibration and Methodology of Commercial Solid-Phase Microextraction Preconcentration and Ultraviolet Absorption Spectroscopy for Determination of Aromatic Compound in Water”. Asian Journal of Chemistry 11, no. 3 (July 19, 2012): 805–812. Accessed April 3, 2025. https://asianpubs.org/index.php/ajchem/article/view/23382.