期刊
MICROCHIMICA ACTA
卷 166, 期 1-2, 页码 157-162出版社
SPRINGER WIEN
DOI: 10.1007/s00604-009-0179-6
关键词
Propoxur; Ultrasound-assisted emulsification-microextraction; High performance liquid chromatography; Environmental and beverage samples
资金
- Guangdong province [2007A090302100]
Ultrasound-assisted emulsification-microextraction coupled to HPLC was applied to the determination of propoxur in environmental and beverage samples. Carbon tetrachloride (the extraction solvent) is added to the aqueous sample, and the liquids are sonificated at 60 A degrees C, upon which an emulsion is formed. This is followed by centrifugation the lower phase being analyzed by HPLC. The extraction solvent, its volume, extraction time, temperature and salt concentration were optimized. Linear range (0.01-10 A mu g mL(-1)), correlation coefficient (0.9965), detection limit (1 ng mL(-1) at a SNR of 3), and precision (4.5% RSD, n = 5) were determined. The technique was applied to the determination of propoxur in environmental and beverage samples and no target analyte was found in these samples. Therefore, samples were spiked and recoveries of 93-106% and RSDs of 1.5-6.2% were obtained.
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