简介：Inthispaper,anovelSPMEmode,PDMS-coatedsolidglassmicrospheres(SGMs),werepreparedbysol-gelmethod.UsinghomemadethermaldesorptionunitcoupledwithCGC-FID,sixPAHsasmodelanalytes,theperformanceofthenewmodewascharacterized.Thenewextractivephaseexhibitedhighthermalstabilityandsatisfactoryextractioncapability.Thedetectionlimitswere0.01-0.045ng/mL,andthelinearitywasfrom0.5ng/mLto96ng/mL.TheR.S.D.sofrepeatabilityforretentiontimeandpeakareawereallwithin0.074%and6.7%,respectively.TherecoveriesofthePAl-Iswere78-127%fromthesamplestakenfromriverwater.
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