Soil analyses were carried out to evaluate the contamination caused by PCDD
s and PCDFs in different soil samples. Monitoring was undertaken at differe
nt locations throughout Spain, from 1993 to 1999. A total of 230 samples we
re analysed. The levels ranged from 0.10 pg I-TEQ/g to 1.08 ng I-TEQ/g. Dif
ferences in dioxin levels were observed as a function of the sampling site,
with levels at the industrial sites exceeding those at the control sites.
(C) 2001 Elsevier Science Ltd. All rights reserved.