In order to be able to clarify the biological answers as well as possible and to thus be able to gauge the values obtained, a certain number of physicochemical parameters were measured.


Structure: INRA - Laboratoire d'Analyse des Sols

Parameters Methods or standards used
5 fractions granulometry
without decarbonation
NF X 31-107
Organic Carbon
and total nitrogen
NF ISO 10694 et NF ISO 13878
pH (water) NF ISO 10390
Total limestone NF ISO 10693
Assimilable phosphorus
Joret-Hebert method
NF X31-161
by cobaltihexammin
NF ISO 23470 (spectrocolorimetry)
Exchangeable Ca, Mg, Na, K, Fe, Mn, Al
by cobaltihexammin
Total trace elements:
Co, Cr, Cu, Ni, Zn
NF X31-147
NF ISO 22036 (ICP-AES)
Total trace elements:
As, Pb, Cd, Tl, Mo
NF X31-147
NF EN ISO 17294-2 (ICP-MS)
Total mercury Atomic absorption after dry combustion
Trace elements by CaCl2 0.01 M extraction:
Cd, Cr, Cu, Ni, Pb, Zn, As
Liquid/solid extraction and ICP-MS dosage
16 HAP:
naphtalene, acenaphtene, fluorene, phenanthrene, ...
PLE extraction and LC-UV/Fluo dosage
12 organochlorinated pesticides PLE extraction and GC-ECD dosage
26 weedkillers and
triazines and phenyl-ureas' families' metabolites
PLE extraction and LC-MS/MS dosage

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