A novel hydrophobic task specific ionic liquid for the extraction of Cd(II) from water and food samples as applied to AAS determination.
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.
Li
Ning
N
Key Laboratory of Food Nutrition and Safety, Ministry of Education, Tianjin University of Science & Technology, Tianjin 300457, P. R. China.
Fang
Guozhen
G
Liu
Bing
B
Zhang
Jia
J
Zhao
Lijie
L
Wang
Shuo
S
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*
D052160:Benzothiazoles; D004785:Environmental Pollutants; D052578:Ionic Liquids; D002104:Cadmium; D014867:Water; C005563:captax