title: A novel hydrophobic task specific ionic liquid for the extraction of Cd(II) from water and food samples as applied to AAS determination.
abstract: Hydrophobic task specific ionic liquid (TSIL) functionalized 2-mercaptobenzothiazole (MBT) was synthesized and characterized by NMR and HRMS. The capability of TSIL-MBT for the selective separation and preconcentration of Cd(2+), which was determined by flame atomic absorption spectrometry (FAAS) from water and food samples, was investigated. The TSIL-MBT with high selectivity for the extraction of Cd(2+) was discussed by comparing with a traditional extractant, such as ammonium pyrrolidine dithiocarbamate (APDC) and diethydithiocarbamate (DDTC), and the recoveries of the extraction Cd(2+) by TSIL-MBT were much better than APDC and DDTC. The proposed method was evaluated by analyzing two certified reference materials. The Cd(2+) concentration, determined by the developed methodology, was in good agreement with certified values.
authors.affiliation: Key Laboratory of Food Nutrition and Safety, Ministry of Education, Tianjin University of Science & Technology, Tianjin 300457, P. R. China.
authors.forename: Ning
authors.initials: N
authors.lastname: Li
authors.forename: Guozhen
authors.initials: G
authors.lastname: Fang
authors.forename: Bing
authors.initials: B
authors.lastname: Liu
authors.forename: Jia
authors.initials: J
authors.lastname: Zhang
authors.forename: Lijie
authors.initials: L
authors.lastname: Zhao
authors.forename: Shuo
authors.initials: S
authors.lastname: Wang
mesh_terms: D052160:Benzothiazoles / Q000737:chemistry; D002104:Cadmium / Q000032:analysis* / Q000737:chemistry / Q000302:isolation & purification*; D005591:Chemical Fractionation / Q000379:methods*; D004785:Environmental Pollutants / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification; D005504:Food Analysis; D006863:Hydrogen-Ion Concentration; D057927:Hydrophobic and Hydrophilic Interactions; D052578:Ionic Liquids / Q000737:chemistry*; D015203:Reproducibility of Results; D013054:Spectrophotometry, Atomic; D014867:Water / Q000737:chemistry*
chemical_list: D052160:Benzothiazoles; D004785:Environmental Pollutants; D052578:Ionic Liquids; D002104:Cadmium; D014867:Water; C005563:captax