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Table 8 ADD and PTWI values of heavy metals in herbal decoctions

From: Monitoring heavy metals, residual agricultural chemicals and sulfites in traditional herbal decoctions

Contents As Cd Pb Hg
Provisional tolerable weekly intake (PTWI, μg/kg/week)a 15 7 25 5
Average daily dose (ADD, μg/kg/day) 0.05 0.01 0.04 0
ADD for 95th percentile (μg/kg/day) 0.19 0.06 0.18 0
Average weekly dose (AWD, μg/kg/week) 0.34 0.09 0.30 0
Ratio to PTWI 2.2% 1.3% 1.2% 0%
AWD for 95th percentile (μg/kg/week) 1.33 0.39 1.25 0
Ratio to PTWI 8.9% 5.6% 5.0% 0%
  1. a[18, 32]