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Expected Introduction Concentration (EIC) in Water
Even with the increase in use expected with the supplemental indication, the maximum
amount used annually in the United States is still predicted to be less than 100,000 kg of
duloxetine (free base) as estimated in the original environmental assessment. From this
forecast, the expected introduction concentration (EIC) of duloxetine at the point of entry
into the aquatic environment is calculated as follows:
2.1¦Ìg/L
1.3 10 L/day 365 days
100,000 kg 1,000,000,000 ¦Ìg/kg
EIC (ppb) aquatic 11 =
¡Á ¡Á
= ¡Á
where 1.3x1011 L/day is the volume of water entering publicly owned treatment works in
the United States (Environmental Protection Agency, 2000 Needs Survey, Report to
Congress).
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  • 2018-09-06 22:02:51, 543.63 K

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