Be . 2.18 mg/gCu.29.1 mg/gPb . 33.5 mg/gCd . 0.32 mg/gHg.0.096 mg/gV . 76.2 mg/gCo . 11.5 mg/gMn .600 mg/gZn. 81.0 mg/gCr . 79.8 mg/gNi .31.3 mg/gIndicative values for As, BaAqua regia soluble contentCertified valuesAs. 11.6 mg/gCr.42.4 mg/gPb . 25.2 mg/