Estuarine sediment - Trace elements Certified values As............................. 18.3 mg/kg Cr .............................. 188 mg/kg Ni .............................. 130 mg/kg Cd ............................ 0.61 mg/kg Cu ................................ 63 mg/kg Zn .............................. 178 mg/kg Co ............................ 22.5 mg/kg Hg ........................... 0.128 mg/kg
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