TY - JOUR
T1 - A 25-year record of polycyclic aromatic hydrocarbons in soils amended with sewage sludges
AU - Lichtfouse, Eric
AU - Sappin-Didier, Valérie
AU - Denaix, Laurence
AU - Caria, Giovanni
AU - Metzger, Laure
AU - Amellal-Nassr, Najat
AU - Schmidt, Jens Ejbye
PY - 2005
Y1 - 2005
N2 - We studied polycyclic aromatic hydrocarbons (PAHs) in crop soils amended with 1000 tonnes dry weight of sewage sludges per 10,000 m(2) from 1974 to 1992, then after sludges addition from 1993 to 1999. The absence of variations of total PAHs levels of control soils, averaging at 123 mu g/Kg, shows the absence of horizontal contamination. During sludges addition, the total PAHs levels in amended soils increased from 232 to 402 mu g/Kg. Seven years after sludges addition, it decreased to 275 mu g/Kg, which is still more than twice the levels of control soils. This finding shows that sludges PAHs are preserved in crop soils for long periods of time, on a human scale.
AB - We studied polycyclic aromatic hydrocarbons (PAHs) in crop soils amended with 1000 tonnes dry weight of sewage sludges per 10,000 m(2) from 1974 to 1992, then after sludges addition from 1993 to 1999. The absence of variations of total PAHs levels of control soils, averaging at 123 mu g/Kg, shows the absence of horizontal contamination. During sludges addition, the total PAHs levels in amended soils increased from 232 to 402 mu g/Kg. Seven years after sludges addition, it decreased to 275 mu g/Kg, which is still more than twice the levels of control soils. This finding shows that sludges PAHs are preserved in crop soils for long periods of time, on a human scale.
KW - sewage sludge
KW - maize
KW - PAH
KW - pollutant
KW - crop
KW - soil
U2 - 10.1007/s10311-005-0010-5
DO - 10.1007/s10311-005-0010-5
M3 - Journal article
SN - 1610-3653
VL - 3
SP - 140
EP - 144
JO - Environmental Chemistry Letters
JF - Environmental Chemistry Letters
IS - 3
ER -