Table 3: Comparison of the results of the ammonium-EDTA and acetic acid extractions of CRM 483 with certified and indicative values [31]. The number of replicates is given between brackets. Concentrations in mg/kg.

CRM483 Certified values [31] Ammonium-EDTA Acetic acid Cd Cr Cu Ni Pb Zn CRM483 This work Ammonium-EDTA (6) Acetic acid (6) Cd Cr Cu Ni Pb Zn