Polycyclic Aromatic Hydrocarbons Concentrations in Drinking Water in Villages along the Huai River in China and Their Association with High Cancer Incidence in Local Population

Table 1

Values and probability distributions of parameters used in exposure assessment.

Definition	Units	Distributions	Lifetime exposure	Reference
Average time (AT)	Day		25550	[14]
Body weight (BW)	Kg	Lognormal	62.1	[15]
Dermal permeability coefficient (Kp)	cm/h		1.2	[14]
Exposure duration (ED)	Year	Uniform	0–70	[14]
Exposure frequency (EF)	Day/year		350	[14]
Exposure (ET)	h/day	Lognormal	0.15	[15]
Ingestion rate (IR)	L/day	Lognormal	2.39	[15]
Surface area (SA)	cm^2	Lognormal	16000	[15]
Slope factor (SF)	(mg/kg/day)^−1		7.3	[16]