Certified valuesBe. 3.32 mg/gCu .30.8 mg/gPb. 43.8 mg/gCd . 0.32 mg/gHg .0.087 mg/gV. 58.7 mg/gCo . 9.66 mg/gMn.540 mg/gZn . 120 mg/gCr . 89.6 mg/gNi .31.9 mg/gIndicative values for As, BaAqua regia soluble contentCertified valuesAs. 10.4 mg/gCo .9.15 mg/