Journal
JOURNAL OF SEPARATION SCIENCE
Volume 34, Issue 10, Pages 1184-1189Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/jssc.201000912
Keywords
Dispersive liquid-liquid microextraction; Ionic liquid/aromatic amines
Categories
Funding
- Ministry of Education, Science and Technology (MEST) of Korea [2010-D00016]
- National Natural Science Foundation of China [21011140338]
Ask authors/readers for more resources
Ionic liquid-based dispersive liquid-liquid microextraction was developed for the extraction and preconcentration of aromatic amine from environmental water. A suitable mixture of extraction solvent (100 mu L, 1-butyl-3-methylimidazolium hexafluorophoshate) and dispersive solvent (750 mu L, methanol) were injected into the aqueous samples (10.00 mL), forming a cloudy solution. After centrifuging, enriched analytes in the sediment phase were determined by HPLC-UV. The effect of various factors, such as the extraction and dispersive solvent, sample pH, extraction time and salt effect were investigated. Under optimum conditions, enrichment factors for 2-anilinoethanol, o-chloroaniline and 4-bromo-N, N-dimethylaniline were above 50 and the limits of detection (LODs) were 0.023, 0.015 and 0.026 ng/mL, respectively. Their linear ranges were 0.8-400 ng/mL for 2-anilinoethanol, 0.5-200 ng/mL for o-chloroaniline and 0.4-200 ng/mL for 4-bromo-N, N-dimethylaniline, respectively. Relative standard deviations (RSDs) were below 5.0%. The relative recoveries from samples of environmental water were in the range of 82.0-94.0%. Compared with other methods, dispersive liquid-liquid microextraction is simple, rapid, sensitive and economical.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available