Dispersive liquid-liquid microextraction of phenolic compounds using solidified floating organic droplets, and their determination by HPLC

作者：Hou, Fang; Deng, Ting; Jiang, Xinyu^*

来源：Microchimica Acta, 2013, 180(5-6): 341-346.

DOI：10.1007/s00604-012-0937-8

• 4-Nitrophenol
• 2-naphthol
• Bisphenol A
• 1-dodecanol
• Dispersive liquid-liquid microextraction based on solidification of floating organic droplet
• High performance liquid chromatography

We have developed a simple and efficient method for dispersive liquid-liquid microextraction of 4-nitrophenol, 2-naphthol and bisphenol A in real water samples. It is making use of solidified floating organic droplets of 1-dodecanol which has low density and a proper melting point. The type and volume of extraction solvent and dispersive solvent, the effect of salts, pH value and extraction time were optimized and resulted in enrichment factors of 84 for 4-nitrophenol, 123 for 2-naphthol, and 97 for bisphenol A. The limits of detection by HPLC are 1.50, 0.10 and 1.02 ng center dot mL(-1), respectively. Excellent linearity is observed in the concentration range from 10 to 800 ng center dot mL(-1), with coefficients of correlation ranging from 0.9988 to 0.9999. The relative standard deviations (for n = 5) are from 3.2 to 5.3 %, and relative recoveries for the three phenols in tap, river and spring water range from 85.0 to 105.0 %, 98.3 to 110.0 %, and 98.6 to 109.0 %, respectively.

• 出版日期2013-4
• 单位中南大学