Potential health risk assessment of toxic metals contamination in clay eaten as pica (geophagia) among pregnant women of Ho in the Volta Region of Ghana

Table 1 Exposure parameters used for the health risk estimations via consumption of clay [27] (US EPA)

Parameter	Unit	Child	Adult
Body Weight (BW)	Kg	15	75
Exposure	Days/ years	365	365
Frequency (EF)
Exposure	Years	6	30
Duration
Ingestion Rate (IR_clay)	mg/day	200	100
Average Time (AT)	Days/years
For carcinogenic		365 × 70	366 × 70
For non-carcinogenic		365x ED	365x ED

ISSN: 1471-2393