In this study, various techniques for measurement and analysis of PAHs in the ambient air were verid in orderto select a more reliable method. Sampling and analysis of PAHs were done by the EPA TO-13a method. QA/QCof the measurement was conducted to minimize errors in sampling and analyzing processes. The linearity ofcalibration curve of the PAH standards was good (R20.99). Audit accuracy was evaluated using 5 internalstandards of PAHs (Naphthalene-d8, Acenaphthene-d10, Phenanthrene-d10, Chrysene-d12, Perylene-d12). Relativestandard deviations of the internal standard of the PAHs were ranged from 6.22% for acenaphthene-d10 to 8.11%for chrysene-d12. To evaluate the surrogate recoveries, two eld surrogate standards of PAHs (oranthene-d10,benzo(a)pyrene-d12) and two extract surrogate standards of the PAHs(orene-d10, pyrene-d12) were spiked into allsamples before field sampling and sample extraction, respectively. Recoveries of field the surrogate standardsranged from 80.4?12.2% for oranthene-d10 to 66.2?12.8% for benzo(a)pyrene-d12. Extraction recoveries of thesurrogate standards ranged from 70.4?10.2% for orene-d10 to 77.6?10.8% for pyrene-d10. The detection limitof benzo(a)pyrene among 16 PAHs standards for quantitation was 20 pg.