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A contaminated soil sample (0.5886 g) was treated with 5 mL of 0.6 M KOH to extract the glyphosate. The extract was then concentrated to 2 mL for final analysis and measured using liquid chromatography-mass spectrometry. The sample extract was analysed 5 times and the average signal was found to be 0.3683 ± 0.015. 2.1 Calculate the detection limit (expressed in mg/L). [Q2.1] 2.2 Calculate the amount of glyphosate (mg) extracted in the original KOH solution. [Q2.2] 4 2.3 Calculate the glyphosate concentration (% mass) in the original soil sample [Q2.3] 2.4 Calculate the %RSD associated with the analysis. [Q2.4]

A contaminated soil sample (0.5886 g) was treated with 5 mL of 0.6 M KOH to extract the glyphosate. The extract was then concentrated to 2 mL for final analysis and measured using liquid chromatography-mass spectrometry. The sample extract was analysed 5 times and the average signal was found to be 0.3683 ± 0.015. 2.1 Calculate the detection limit (expressed in mg/L). [Q2.1] 2.2 Calculate the amount of glyphosate (mg) extracted in the original KOH solution. [Q2.2] 4 2.3 Calculate the glyphosate concentration (% mass) in the original soil sample [Q2.3] 2.4 Calculate the %RSD associated with the analysis. [Q2.4]

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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A contaminated soil sample (0.5886 g) was treated with 5 mL of 0.6 M KOH to extract the glyphosate. The extract was then concentrated to 2 mL for final analysis and measured using liquid chromatography-mass spectrometry. The sample extract was analysed 5 times and the average signal was found to be 0.3683 ± 0.015. 2.1 Calculate the detection limit (expressed in mg/L). [Q2.1] 2.2 Calculate the amount of glyphosate (mg) extracted in the original KOH solution. [Q2.2] 2.3 Calculate the glyphosate concentration (% mass) in the original soil sample [Q2.3] 2.4 Calculate the %RSD associated with the analysis. [Q2.4]
Transcribed Image Text:A contaminated soil sample (0.5886 g) was treated with 5 mL of 0.6 M KOH to extract the glyphosate. The extract was then concentrated to 2 mL for final analysis and measured using liquid chromatography-mass spectrometry. The sample extract was analysed 5 times and the average signal was found to be 0.3683 ± 0.015. 2.1 Calculate the detection limit (expressed in mg/L). [Q2.1] 2.2 Calculate the amount of glyphosate (mg) extracted in the original KOH solution. [Q2.2] 2.3 Calculate the glyphosate concentration (% mass) in the original soil sample [Q2.3] 2.4 Calculate the %RSD associated with the analysis. [Q2.4]
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