6. A 3.0 g piece of brain from a victim of fatal motor vehicle crash was cut into small pieces and transferred to a headspace vial. A 20-μL aliquot of an aqueous solution of ethanol having a concentration of 1.10 mg/mL was used as an external vapor standard. It contained 12.14 ug of ethanol. Equilibration of both the sample and standard solution was carried out at 60oC for 20 minutes. The analytical results were as follows: Sample Calibration Standard A1 = 167,900 Astd = 72,550 1 – e-q = 0.4826 1 – e-q = 0.3785 Calculate the amount of ethanol in the victim’s brain.

6. A 3.0 g piece of brain from a victim of fatal motor vehicle crash was cut into small pieces and transferred to a headspace vial. A 20-μL aliquot of an aqueous solution of ethanol having a concentration of 1.10 mg/mL was used as an external vapor standard. It contained 12.14 ug of ethanol. Equilibration of both the sample and standard solution was carried out at 60oC for 20 minutes. The analytical results were as follows: Sample Calibration Standard A1 = 167,900 Astd = 72,550 1 – e-q = 0.4826 1 – e-q = 0.3785 Calculate the amount of ethanol in the victim’s brain.

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Chapter11: Atomic Mass Spectrometry

Section: Chapter Questions

Problem 11.10QAP

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