Table 2.

Values and factors used for non-carcinogenic hazard health risk assessment.

Parameter	Physical Meaning	Unit	Children	Adults	Reference
C	Concentration of heavy metal(loid)s in SPM	mg kg−1			This study
EF	Exposure frequency	day year−1	350	350	[41]
ED	Exposure duration	year	6	30	[41]
SA	Exposed skin area	cm2	1800	5000	[37]
AF	Adherence factor	mg cm−2 day−1	1	1	[37]
ABS	Dermal absorption factor	-	0.03 for As; 0.001 for other metals	0.03 for As; 0.001 for other metals	[37,44]
BW	Average body weight	kg	15	55.9	[37]
AT	Average time	day	365 × ED	365 × ED	[37,44]