An analyst injects a 2µL sample of unknown into a GC-TCD and observed the following: Peak # 1 Rt = 2.011 min Response = 41334 units Following the above injection, the analyst mixes 1mL of unknown with 10 µL of pure toluene, and after injecting 2 µL sample observes the following: Peak # 1 Rt = 2.010 min Response = 41117 units Peak # 2 Rt = 3.502 min Response = 25667 units Following this injection, the analyst mixes 1mL of unknown with 10 µL of pure hexane, and after injecting 2 µL sample observes the following: Peak # 1 Rt = 2.021 min Response = 48335 units Based on the above data, determine the identity and concentration (in ppm) of the unknown solution NOTE: density of toluene = 0.87g/mL, density of hexane = 0.66g/mL

An analyst injects a 2µL sample of unknown into a GC-TCD and observed the following: Peak # 1 Rt = 2.011 min Response = 41334 units Following the above injection, the analyst mixes 1mL of unknown with 10 µL of pure toluene, and after injecting 2 µL sample observes the following: Peak # 1 Rt = 2.010 min Response = 41117 units Peak # 2 Rt = 3.502 min Response = 25667 units Following this injection, the analyst mixes 1mL of unknown with 10 µL of pure hexane, and after injecting 2 µL sample observes the following: Peak # 1 Rt = 2.021 min Response = 48335 units Based on the above data, determine the identity and concentration (in ppm) of the unknown solution NOTE: density of toluene = 0.87g/mL, density of hexane = 0.66g/mL

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

Chapter15: Molecular Luminescence Spectrometry

Section: Chapter Questions

Problem 15.7QAP

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question? An analyst injects a 2µL sample of unknown into a GC-TCD and observed the following:Peak # 1 Rt = 2.011 min Response = 41334 unitsFollowing the above injection, the analyst mixes 1mL of unknown with10 µL of pure toluene, and after injecting 2 µL sample observes the following:Peak # 1 Rt = 2.010 min Response = 41117 unitsPeak # 2 Rt = 3.502 min Response = 25667 unitsFollowing this injection, the analyst mixes 1mL of unknown with10 µL of pure hexane, and after injecting 2 µL sample observes the following:Peak # 1 Rt = 2.021 min Response = 48335 unitsBased on the above data, determine the identity and concentration (in ppm) of the unknown solution NOTE: density of toluene = 0.87g/mL, density of hexane = 0.66g/mL
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