期刊
MICROCHIMICA ACTA
卷 177, 期 1-2, 页码 167-175出版社
SPRINGER WIEN
DOI: 10.1007/s00604-012-0761-1
关键词
Micro-scale; Phthalate esters; Cosmetics; Capillary liquid chromatography; Extraction
资金
- National Science Council (NSC) [99-2113-M-037-004, 100-2113-M-037-003]
We have extracted ten phthalate esters (C1 to C8) using six different micro-scale methods for extraction, and then separated them by capillary liquid chromatography coupled to UV detection. The methods included liquid-liquid extraction, ultrasonic-assisted extraction, microwave-assisted extraction, dispersive liquid-liquidmicroextraction, dispersive liquid-liquid microextraction solidification of floating organic droplets, and cloud point extraction. The linear range of the analytes is from 0.5 to 50 mu g mL(-1), and the detection limits range from 0.02 to similar to 0.17 mu g mL(-1). The precision and accuracy of all intra-and inter-day analyses are <5.5%. We find that dispersive liquid-liquid microextraction solidification of floating organic droplet (DLLME-SFO) is the best method for quantification of most phthalate esters in water samples and cosmetics because of its low limit of detection and high extraction efficiencies.
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