What is the intake rate of trichloroethylene

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Reference no: EM133838021

Problem

Characterize risk of trichloroethylene health effects by calculating a hazard quotient for the following exposure scenarios:

Assume the population of concern in EC pre-air stripper consumes 2L of water/day 200 days/yr for 30 years, weighs 50kg, and is exposed to 0.013 mg/L trichloroethylene

Note: 0.013 mg/L trichloroethylene was the maximum amount found in EC drinking water

Intake rate (mg/kg/day) = C x IR x EF x ED/ BW x AT
C = Concentration (mg/L)
IR = Ingestion rate (L/day)
EF = Exposure frequency (days/year)
ED = Exposure duration (years)
BW = Body weight (kg)
AT = Averaging Time = exposure duration x 365 days/yr

A. What is the intake rate of trichloroethylene?

B. What is the hazard quotient?

C. If someone's water consumption pre-air stripper matched these exposure scenarios, were they at risk? Get the instant assignment help.

D. Think about the exposure scenario values (duration, frequency, ingestion rates, weight) I provided. Do these seem realistic to you? Would you select different values? Why or why not? Reflect on the influence exposure has on hazard quotient outcomes.

1. Visit the USEPA Exposure Factors Handbook website

2. Find and choose an average drinking water rate (liters of water/day) for a specific age group

3. Now, find in the Exposure Factors Handbook the average weight of that age group (in kg)

4. Calculate a hazard quotient for this age group using the new weight and ingestion rates you found; an exposure duration equal to the maximum age in the age category chosen, and the exposure frequency and trichloroethylene concentration from the previous scenario.

5. If this age group's water consumption pre-air stripper matched these exposure scenarios, were they at risk?

Reference no: EM133838021

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