Table 2.

Parameters for health risk model of mercury.

Parameter	Definition	Unit	Value		Reference
			Children	Adult
SA	Surface area exposed	cm2	852.5	1610	Wang et al., 2008 [38]
AT	Average exposure time	day	365 × ED	365 × ED	USEPA, 2004 [39]
EF	Exposure frequency	day/a	180	180	Ferreira-Baptista and De Miguel, 2005 [40]
IRinh	Inhalation rate	m3/day	7.6	20	Van den Berg, 1994 [41]
IRing	Ingestion rate	mg/day	200	100	USEPA, 2001 [37]
ED	Exposure duration	a	6	24
CF	Conversion factor	kg/mg	10−6	10−6
BW	Average body weight	kg	15	70
PEF	Particle emission factor	mg3/kg	1.36 × 109	1.36 × 109
SL	Skin adherence factor	mg3/kg	0.2	0.07
ABS	Dermal absorption factor		0.001	0.001