Hydrogeochemical Features and Genesis of Confined Groundwater and Health Perspectives for Sustainable Development in Urban Hengshui, North China Plain

Table 1

The values of exposure parameters and RfD used in the HHAR model.

Exposure	Value				Contaminant	RfDoral
Parameter	Infants	Children	Females	Males		(mg/(kg × day))
IR (L/day)	0.65^∗	1.5^∗	2.66^∗	3.62^∗	F^-	0.06^∗^∗^∗
EF (days/year)	365^∗^∗	365^∗^∗	365^∗	365^∗^∗	Mn	0.14^∗^∗
ED (years)	0.5^∗	6^∗	30^∗	30^∗	Fe	0.7^∗^∗
BW (kg)	6.94^∗	25.9^∗	64.0^∗	73.0^∗

^∗Zhai et al. [63]; ^∗∗USEPA [60]; ^∗∗∗Zhang et al. [64].