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Table 5 The recommended daily exposure values of five age groups for estimating daily exposure dose via dust ingestion and dermal absorption

From: Novel brominated flame retardants in house dust from Shanghai, China: levels, temporal variation, and human exposure

Dust exposure pathway Factors Daily exposure value
Infants Toddlers Children Teenagers Adults
Dust ingestion Weight (kg)a 9.4 16.3 28.8 54.8 63.5
Daily ingestion rate (g/day)a 0.06 0.10 0.103 0.086 0.05
Indoor exposure fractionb 0.875 0.792 0.792 0.875 0.875
Dermal absorption Weight (kg)a 9.4 16.3 28.8 54.8 63.5
Total skin area (cm2)a 4475 6940 11,500 16,100 17,000
Body surface area (cm2/day)b 1119 1735 2875 4025 4250
Dust adhered to skin (mg/cm2)b 0.096 0.096 0.096 0.096 0.096
NBFR fraction absorbed through the skina 0.03 0.03 0.03 0.03 0.03
Indoor exposure fractionb 0.875 0.792 0.792 0.875 0.875
  1. aData from MEEPRC [62]
  2. bData from USEPA [63]