Cd . 24.3 mg/kgCu.215 mg/kgPb . 229 mg/kgCr . 28.6 mg/kgNi .28.7 mg/kgZn. 612 mg/kgAcetic acidCertified valuesCd . 18.3 mg/kgCu.33.5 mg/kgPb . 2.10 mg/kgCr . 18.7 mg/kgNi .25.8 mg/kgZn. 620 mg/kg