TY - JOUR
T1 - Distribution patterns of selected PAHs in bulk peat and corresponding humic acids from a Swiss ombrotrophic bog profile.
AU - Zaccone, C.
AU - Gallipoli, Agata
AU - Cocozza, C.
AU - Trevisan, Marco
AU - Miano, T. M.
PY - 2009
Y1 - 2009
N2 - An ombrotrophic peat core was collected in
2005 from Etang de la Gruère, Jura Mountains,
Switzerland. The concentrations of nine among the
U.S. Environmental Protection Agency priority polycyclic
aromatic hydrocarbons (PAHs) (i.e., acenaphthene,
phenanthrene, fluorene, pyrene, fluoranthene,
benzo[jbk]fluoranthene, benzo[a]pyrene, benzo[ghi]
perylene, and indeno[1,2,3-cd]pyrene) were determined
in both bulk peat and corresponding humic
acids (HA) samples by gas chromatography equipped
with a mass spectrometry detector (GC-MS). The
maximum PAHs concentrations in peat (around
1,250 μg Σ PAHs kg−1 dry matter) were found at
28–30 cm of depth, which correspond to ca. 1920–
1930, when coal inputs to Switzerland reached their
maximum level. Amongst the nine PAHs analyzed in
the peat samples, pyrene (Pyr) was the predominant
species, accounting for ca. 20–100% of the total
PAHs throughout the profile. In the HA fraction, that
represents 24.7% (average value) of the bulk peat,
only phenanthrene (Phe), and sporadically Pyr and
fluoranthene (Fth), were detected. In particular, HA
showed Phe concentrations that were ten–150 times
higher than corresponding bulk peat samples, thus
suggesting its preservation against biodegradation due
to the incorporation into HA molecules.
AB - An ombrotrophic peat core was collected in
2005 from Etang de la Gruère, Jura Mountains,
Switzerland. The concentrations of nine among the
U.S. Environmental Protection Agency priority polycyclic
aromatic hydrocarbons (PAHs) (i.e., acenaphthene,
phenanthrene, fluorene, pyrene, fluoranthene,
benzo[jbk]fluoranthene, benzo[a]pyrene, benzo[ghi]
perylene, and indeno[1,2,3-cd]pyrene) were determined
in both bulk peat and corresponding humic
acids (HA) samples by gas chromatography equipped
with a mass spectrometry detector (GC-MS). The
maximum PAHs concentrations in peat (around
1,250 μg Σ PAHs kg−1 dry matter) were found at
28–30 cm of depth, which correspond to ca. 1920–
1930, when coal inputs to Switzerland reached their
maximum level. Amongst the nine PAHs analyzed in
the peat samples, pyrene (Pyr) was the predominant
species, accounting for ca. 20–100% of the total
PAHs throughout the profile. In the HA fraction, that
represents 24.7% (average value) of the bulk peat,
only phenanthrene (Phe), and sporadically Pyr and
fluoranthene (Fth), were detected. In particular, HA
showed Phe concentrations that were ten–150 times
higher than corresponding bulk peat samples, thus
suggesting its preservation against biodegradation due
to the incorporation into HA molecules.
KW - humic acids
KW - pah
KW - peat
KW - humic acids
KW - pah
KW - peat
UR - http://hdl.handle.net/10807/11684
U2 - 10.1007/s11104-008-9775-1
DO - 10.1007/s11104-008-9775-1
M3 - Article
SN - 0032-079X
VL - 315
SP - 35
EP - 45
JO - Plant and Soil
JF - Plant and Soil
ER -