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محیط زیست و منابع طبیعی::
نرخ بلع
ingestion of soil CDIingestion-soil = CS�IR�CF�EF�ED
CDI: chronic daily intake dose; CS: Heavy metal content in soil (mg/kg); IR: Soil ingestion rate (mg/day); CF: Conversion factor (kg/mg); EF: Exposure frequency (day/a); ED: Exposure duration (a); BW: Body weight (kg); AT: Average time (day); PM10: Content of inhalable particulates in ambient air (mg/m3); DAIR: Daily air inhalation
air; AF: Skin adherence factor (mg/cm2); SA: Exposed surface area of skin (cm2); ABS: Dermal absorption factor; Ccrop: Heavy metal content in crops (mg/kg); IRcrop: Ingestion rate (g/day).
Parameter Definition Value of Parameter Reference CS Heavy metal content in soil (mg/kg) observed value - IR Soil ingestion rate (mg/day) 100 [21] CF Conversion factor (kg/mg) 10-6 [22] EF Exposure frequency (day/a) 350 [22] ED Exposure duration (a) 30 [22] BW Body weight (kg) 60.6 [23]
IRcrop Ingestion rate (g/day) 402 (vegetables)
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