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 PAl-Is were 78-127% from the samples taken from river water.
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机译：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.
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