Citation: Chang Guang Yang, Xiang Juan Ji, Xiao Zheng Lan. Preparation of PDMS-coated microspheres by sol-gel method for sorptive extraction of PAHs[J]. Chinese Chemical Letters, ;2008, 19(8): 996-999. doi: 10.1016/j.cclet.2008.05.026 shu

Preparation of PDMS-coated microspheres by sol-gel method for sorptive extraction of PAHs

College of Chemistry and Materials Science, Shandong Agricultural University, Taian 271018, China

Received Date: 1 February 2008

In this paper, a novel SPME mode, PDMS-coated solid glass microspheres (SGMs), were prepared by sol-gel method.Using homemade thermal desorption unit coupled with CGC-FID, six PAHs as model analytes, the performance of the new mode was characterized.The new extractive phase exhibited high thermal stability and satisfactory extraction capability.The detection limits were 0.01-0.045 ng/mL, and the linearity was from 0.5 ng/mL to 96 ng/mL.The R.S.D.s of repeatability for retention time and peak area were all within 0.074% and 6.7%, respectively.The recoveries of the PAHs were 78-127% from the sarnples taken from river water.
- Sorptive extraction,
- PDMS-coated microspheres,
- Sol-gel,
- PAHs
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