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

作　　者：Chang Guang Yang Xiang Juan Ji Xiao Zheng Lan 

机构地区：[1]College of Chemistry and Materials Science, Shandong Agricultural University, Taian 271018, China

出　　处：《Chinese Chemical Letters》2008年第8期996-999,共4页中国化学快报（英文版）

摘　　要：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 samples taken from river water.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 samples taken from river water.

关 键 词：Sorptive extraction PDMS-coated microspheres Sol-gel PAHS 

分 类 号：O62[理学—有机化学]