Environmental Engineering Reference
In-Depth Information
Together with the FL0/PY0 ratio, the BeP/BaP has successfully been used to dif-
ferentiate MGP tar residues from background contamination (Costa et al.
2004
),
and other combustion sources (Dickhut et al.
2000
). Ahrens and Depree (
2010
) dis-
criminated bitumen from coal tar in sediments by using the BeP/BaP ratio in con-
junction with IP/
ghi
and BaA/C0.
The literature ratios of BeP/BaP are >1 for most petrogenic sources, except
for some coals (Fig.
18
). BeP/BaP is usually <2 for pyrogenic sources, and this
Fig. 18
The ratio of
BeP
/
BaP
for different sources. See Fig.
9
for the symbols and the text for
explanation
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