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Chinese Journal of Chromatography
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Chinese Journal of Chromatography  2014, Vol. 32 Issue (2): 194-197    DOI: 10.3724/SP.J.1123.2013.09048
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Determination of estrogen residues in drinking water by on-line solid phase extraction based on sol-gel technique coupled with high performance liquid chromatography
LI Longfei, SU Min, SHI Xiaolei, WANG Yana, WANG Minmin, HE Jinxing
College of Food and Biological Engineering, Qilu University of Technology, Jinan 250353, China
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Abstract 

A method for the determination of diethylstilbestrol (DES), hexestrol (HEX) and dienestrol (DS) residues in drinking water was established by on-line solid phase extraction (SPE) coupled with high performance liquid chromatography (HPLC). The material synthesized on the base of sol-gel technology was employed as adsorbent. This material was prepared using 3-aminopropyltriethoxysilane (APTES) as the functional monomer, tetraethoxysilane (TEOS) as the crosslinking agent, and acetic acid as the initiator. The synthesized adsorbent showed outstanding property for the estrogen extraction. The estrogen can be caught effectively from water samples and the extraction can be achieved rapidly. Some important parameters, such as pH of sample solution, eluent solvents, loading flow rate, which might influence extraction efficiency, were optimized. The results indicated that the limit of detection (S/N=3) of the developed method could reach 0.07-0.13 μg/L under the conditions of pH 7.0 of sample solution, methanol and 1% (v/v) acetic acid aqueous solution as the eluent solvent and the loading flow rate of 2 mL/min. The recoveries of the three estrogens from the water samples at three spiked levels ranged from 82.31% to 99.43% with RSD of 1.61%-7.15%. The method was simple, rapid, and suitable to detect the trace residues of estrogens in drinking water.

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Articles by authors
LI Longfei
SU Min
SHI Xiaolei
WANG Yana
WANG Minmin
HE Jinxing
Key wordson-line solid phase extraction   high performance liquid chromatography (HPLC)   estrogens   drinking water     
Received: 2013-09-29; Published: 2014-01-23
Cite this article:   
LI Longfei,SU Min,SHI Xiaolei et al. Determination of estrogen residues in drinking water by on-line solid phase extraction based on sol-gel technique coupled with high performance liquid chromatography[J]. Chinese Journal of Chromatography, 2014, 32(2): 194-197.
 
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