Given that the equivalent exposure, 8 hour time-weighted average (TWA) permissible exposure limits (PELS) for the toluene and trichloroethylene are 0.8, 1000 ppm and 200 ppm respectively, derive a simplified mathematical equation that connects the concentrations of toluene and trichloroethylene in µg/mL unit in 1 mL of carbon disulfide to the equivalent exposure of this mixture.
Given that the equivalent exposure, 8 hour time-weighted average (TWA) permissible exposure limits (PELS) for the toluene and trichloroethylene are 0.8, 1000 ppm and 200 ppm respectively, derive a simplified mathematical equation that connects the concentrations of toluene and trichloroethylene in µg/mL unit in 1 mL of carbon disulfide to the equivalent exposure of this mixture.
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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Question
![In a personal sampling exercise carried out in a factory, an air sample containing toluene (C7H8) and
trichloroethylene (C₂HC13) was collected at 25°C and 1 atm by drawing the air into a worker's breathing
zone at 0.5 L/min through a charcoal adsorbent tube for 8 hours. The collected air sample was sent to a
laboratory to analyze the amount of the trapped toluene and trichloroethylene in the charcoal adsorbent
tube. The trapped toluene and trichloroethylene were extracted using 1 mL carbon disulfide and the
95% efficient extraction was analyzed using gas chromatography coupled with a mass detector
(GCMS). [Given that Universal gas constant, R = 0.08206 L.atm.mol-¹K¹, atomic weight of chlorine,
Cl is 35.453 g/mole; Hydrogen, H is 1.0079 g/mole; Carbon, C is 12.0107 g/mole]
a)
Given that the equivalent exposure, 8 hour time-weighted average (TWA) permissible exposure
limits (PELs) for the toluene and trichloroethylene are 0.8, 1000 ppm and 200 ppm respectively,
derive a simplified mathematical equation that connects the concentrations of toluene and
trichloroethylene in µg/mL unit in 1 mL of carbon disulfide to the equivalent exposure of this
mixture.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2c922b8f-302f-4aea-a8b4-a68e8179362a%2F285195a5-2e52-4b6b-8ff5-028b314c6793%2Fxzc3sl_processed.png&w=3840&q=75)
Transcribed Image Text:In a personal sampling exercise carried out in a factory, an air sample containing toluene (C7H8) and
trichloroethylene (C₂HC13) was collected at 25°C and 1 atm by drawing the air into a worker's breathing
zone at 0.5 L/min through a charcoal adsorbent tube for 8 hours. The collected air sample was sent to a
laboratory to analyze the amount of the trapped toluene and trichloroethylene in the charcoal adsorbent
tube. The trapped toluene and trichloroethylene were extracted using 1 mL carbon disulfide and the
95% efficient extraction was analyzed using gas chromatography coupled with a mass detector
(GCMS). [Given that Universal gas constant, R = 0.08206 L.atm.mol-¹K¹, atomic weight of chlorine,
Cl is 35.453 g/mole; Hydrogen, H is 1.0079 g/mole; Carbon, C is 12.0107 g/mole]
a)
Given that the equivalent exposure, 8 hour time-weighted average (TWA) permissible exposure
limits (PELs) for the toluene and trichloroethylene are 0.8, 1000 ppm and 200 ppm respectively,
derive a simplified mathematical equation that connects the concentrations of toluene and
trichloroethylene in µg/mL unit in 1 mL of carbon disulfide to the equivalent exposure of this
mixture.
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