Schimming, E.E.SchimmingLevsen, K.K.LevsenKöhme, C.C.KöhmeSchürmann, W.W.Schürmann2022-03-032022-03-031999https://publica.fraunhofer.de/handle/publica/19578910.1007/s002160051143A simple and rapid method for the determination of benzene and toluene in whole blood by headspace-solid-phase microextraction (HS-SPME) is described. Using SPME fibres coated with 65 ug carboxene/polydimethylsiloxane, limits of quantification (LOQ) of 5 ng/L for benzene and 25 ng/L for toluene are achieved. As a result of its large linear range (i. e. 5-5000 ng/L for benzene) the method is suitable for biomonitoring of both occupationally and environmentally exposed people. The reproducibility of the determination of benzene is <= 8%. An interlaboratory comparison demonstrated that the method proposed here compares favorably with existing methods (dynamic headspace, purge and trap).enbenzenetolueneblood615610620journal article