Separation and preconcentration based on the
http://dx.doi.org/10.1016/j.saa.2014.10.116
1386-1425/ 2014 Elsevier B.V. All rights reserved.
⇑ Corresponding author at: Chemistry Department, Faculty of Science, Benha
University, Benha 13518, Egypt. Tel.: +966 532175442; fax: +20 133222578.
E-mail address: maa_kassem@hotmail.com (M.A. Kassem).
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 136 (2015) 1955–1961
Contents lists available at ScienceDirect
Spectr ochimica Acta Part A: Molecul ar and
Biomo lecular Spectrosco py
journal homepage: www.el sevier.com /locate/saa
cloud point extraction emerges as an important practical technique.
Aqueous solutions of most non-ionic surfactants possess the ability
to decrease their solubility rapidly and become turbid when they
are heated above a temperature called the cloud point temperature
(tc) [9,10].