What is Risk ?
Risk assessment is done differently for carcinogens and non carcinogens. Following equations can be used for characterization of carcinogens. Same color represents the combination of parameters expressed differently in the following equations.
Same color highlights in both equations suggest that they are conversion from one form to the other using several parameter combinations.
Acceptable concentration: (mg/L)
BW: body weight (kg)
AT: averaging time (d) (typically 70 years * 365days/year)
SF: slope factor (mg/kg-d)-1
IR: intake rate (L/d)
EF: exposure frequency (d/year)
ED: exposure duration (years)