George L, Varghese A, Nizam A. Determination of thallium in environmental samples by surfactant assisted dispersive liquid-liquid microextraction combined with first order derivative spectrophotometry. Eur. J. Chem. [Internet]. 2015 Jun. 30 [cited 2024 Dec. 4];6(2):183-8. Available from: https://eurjchem.com/index.php/eurjchem/article/view/1241