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c) Assuming that at the time of release, 800 workers were exposed to the escaping ammon for 1200 s, using the probit relationship given by Eq. (5) and Figure QC-1, determine th ammonia concentration that would result in 160 of the workers dying. Pr = -15.6 +1.0 In (C².6t) (5) Where: Pr is the probit value C is the concentration of ammonia, ppm t is exposure duration, s 2 5 7 Probit Value Figure Qc-1: Lethality vs Probit value for ammonia Lethality Percentage 100 90 80 70 60 50 40 30 20 10 0 0

c) Assuming that at the time of release, 800 workers were exposed to the escaping ammon for 1200 s, using the probit relationship given by Eq. (5) and Figure QC-1, determine th ammonia concentration that would result in 160 of the workers dying. Pr = -15.6 +1.0 In (C².6t) (5) Where: Pr is the probit value C is the concentration of ammonia, ppm t is exposure duration, s 2 5 7 Probit Value Figure Qc-1: Lethality vs Probit value for ammonia Lethality Percentage 100 90 80 70 60 50 40 30 20 10 0 0

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Assuming that at the time of release, 800 workers were exposed to the escaping ammonia for 1200 s, using the probit relationship given by Eq. (5) and Figure QC-1, determine the ammonia concentration that would result in 160 of the workers dying. Pr = -15.6 +1.0 In (C².6t) (5) Where: Pr is the probit value C is the concentration of ammonia, ppm t is exposure duration, s 1 2 3 5 7 Probit Value Figure Qc-1: Lethality vs Probit value for ammonia Lethality Percentage 100 90 80 70 60 50 40 30 20 10 0 0 CO CO
Transcribed Image Text:Assuming that at the time of release, 800 workers were exposed to the escaping ammonia for 1200 s, using the probit relationship given by Eq. (5) and Figure QC-1, determine the ammonia concentration that would result in 160 of the workers dying. Pr = -15.6 +1.0 In (C².6t) (5) Where: Pr is the probit value C is the concentration of ammonia, ppm t is exposure duration, s 1 2 3 5 7 Probit Value Figure Qc-1: Lethality vs Probit value for ammonia Lethality Percentage 100 90 80 70 60 50 40 30 20 10 0 0 CO CO
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