Petroleum refining is one of the most important sources of PAH pollution
[1,17], and its emissions mainly consist of LMWPAHs. Hence, the
collection and determination of LMWPAHs has been the key barrier to
analyzing PAH air pollution from petrochemical complexes. XAD resins,
which are porous polymers, are widely used in sampling a variety of
airborne organic chemicals [30].