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

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%