title: Separation and preconcentration of persistent organic pollutants by cloud point extraction.
abstract: Persistent organic pollutants (POPs) are recognized as a class of poisonous compounds which pose risks of causing adverse effects to human health and the environment. Thus, it is very important to detect POPs in environmental and biological samples. The identification and determination of very low levels of POPs in complex matrices is extremely difficult. Recently a promising environmentally benign extraction and preconcentration methodology based on cloud point extraction (CPE) has emerged as an efficient sample pretreatment technique for the determination of trace/ultra-trace POPs in complex matrices. The purpose of this paper is to review the past and latest use of CPE for preconcentrating POPs and its coupling to different contemporary instrumental methods of analysis. First, the comparison of various extraction techniques for POPs is described. Next, the general concept, influence factors and other methods associated with CPE technique are outlined and described. Last, the hyphenations of CPE to various instrumental methods for their determination are summarized and discussed.
authors.affiliation: Department of Chemistry, Hong Kong Baptist University, 224 Waterloo Road, Kowloon Tong, Hong Kong SAR, China.
authors.forename: Shunping
authors.initials: S
authors.lastname: Xie
authors.forename: Man Chin
authors.initials: MC
authors.lastname: Paau
authors.forename: Cheuk Fai
authors.initials: CF
authors.lastname: Li
authors.forename: Dan
authors.initials: D
authors.lastname: Xiao
authors.forename: Martin M F
authors.initials: MM
authors.lastname: Choi
mesh_terms: D005591:Chemical Fractionation / Q000379:methods*; D002845:Chromatography / Q000379:methods; D004785:Environmental Pollutants / Q000737:chemistry* / Q000302:isolation & purification; D009930:Organic Chemicals / Q000737:chemistry / Q000302:isolation & purification; D011078:Polychlorinated Biphenyls / Q000737:chemistry* / Q000302:isolation & purification; D011084:Polycyclic Aromatic Hydrocarbons / Q000737:chemistry* / Q000302:isolation & purification; D012680:Sensitivity and Specificity
chemical_list: D004785:Environmental Pollutants; D009930:Organic Chemicals; D011084:Polycyclic Aromatic Hydrocarbons; D011078:Polychlorinated Biphenyls