Total heavy metal content
Due to a lack of soil quality standards for agricultural
soils in Alicante and studies in the Segura River valley
on soil heavy metal content, a comparative study between
the results obtained and of other works on agricultural
soils in the Spanish Mediterranean region was carried
out (Table 3). The other works were selected according
to soil properties to give a comparative study among
soils with similar properties (e.g. basic soils, high carbonate
soils, etc.). Moreover, Table 4 gives reference
values of heavy metals determined by Pérez et al.
(2002) for horticultural soils in the region of Murcia,
the maximum permissible heavy metal concentration
(Kabata-Pendias and Pendias, 2001) for some European
countries and the guidelines values from the 86/278/EEC
Directive (CEC, 1986) for agricultural soils with a
pH > 7, which were taken into account in this study.
Total heavy metal content
Due to a lack of soil quality standards for agricultural
soils in Alicante and studies in the Segura River valley
on soil heavy metal content, a comparative study between
the results obtained and of other works on agricultural
soils in the Spanish Mediterranean region was carried
out (Table 3). The other works were selected according
to soil properties to give a comparative study among
soils with similar properties (e.g. basic soils, high carbonate
soils, etc.). Moreover, Table 4 gives reference
values of heavy metals determined by Pérez et al.
(2002) for horticultural soils in the region of Murcia,
the maximum permissible heavy metal concentration
(Kabata-Pendias and Pendias, 2001) for some European
countries and the guidelines values from the 86/278/EEC
Directive (CEC, 1986) for agricultural soils with a
pH > 7, which were taken into account in this study.
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