SHEIKH, Ragaa El; GOUDA, Ayman A.; MOSTAFA, Ahmed H.; EL DIN, Nosa Salah. DEVELOPMENT OF EFFICIENT CLOUD POINT EXTRACTION METHOD FOR PRECONCENRATION AND SPECTROPHOTOMETRIC DETERMINATION OF NICKEL IN WATER SAMPLES USING 2-(BENZOTHIAZOLYLZAO)ORCINOL. International Journal of Pharmacy and Pharmaceutical Sciences, [S. l.], v. 7, n. 11, p. 176–184, 2015. Disponível em: https://www.journals.innovareacademics.in/index.php/ijpps/article/view/7302. Acesso em: 6 dec. 2025.