Explanation As per the given figure, for the standards 0.2, 0.1, 0.05, the absorbance values are 0.35, 0.19, 0.09 respectively. Around 0.1 is the absorbance of the sample. Calculating the sample concentration using excel: Concentration Absorbance 0.05 0.1 0.1 0.19 0.2 0.33 Sample 0.1 Slope Slope (C4:C6, B4:B6) 1.51428571 Intercept Intercept (C4:C6, B4:B6) 0.03 Sample concentration Sample Absorbance -Intercept Slope 0.04622642 Error Calculations: Standard error in y Steyx(C4:C6, B4:B6) 0.01069045 Standards Count (B4:B6) 3 Sxx Devsq(B4:B6) 0.01166667 Average ratio AVERAGE (C4:C6) 0.20666667 Replicates 1 The standard deviation can be calculated as follows: S D = Standard error in y slope × ( 1 replicates + 1 standards + (

The lead concentration in parts per million (ppm) in a canned orange juice sample needs to be determined. Concept introduction: Spectral lines are lines which help in identifying the atoms and molecules. These are a result of absorption or emission of light in a comparatively narrower frequency range compared to the frequencies nearby. In a defined space, the amount of a substance is its concentration. A substance’s capacity to absorb specific wavelength light is its absorbance.

Principles of Instrumental Analysis

7th Edition

ISBN: 9781305577213

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

Publisher: Cengage Learning

See similar textbooks

Concept explainers

Spectroanalytical Methods

Spectroanalytical methods measure the wavelength and intensity of radiations that are either emitted or absorbed by a molecular or atomic species. These methods are useful for evaluating the electronic or atomic arrangement of the molecules of a given an…

Question

Chapter 9, Problem 9.16QAP

Interpretation Introduction

Interpretation:

The lead concentration in parts per million (ppm) in a canned orange juice sample needs to be determined.

Concept introduction:

Spectral lines are lines which help in identifying the atoms and molecules. These are a result of absorption or emission of light in a comparatively narrower frequency range compared to the frequencies nearby.

In a defined space, the amount of a substance is its concentration. A substance’s capacity to absorb specific wavelength light is its absorbance.

Expert Solution & Answer

Trending nowThis is a popular solution!

See solution

Check out sample textbook solution

Chapter 9, Problem 9.15QAP

Chapter 9, Problem 9.17QAP

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Recommended textbooks for you

Principles of Instrumental Analysis
Chemistry
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Cengage Learning
Macroscale and Microscale Organic Experiments
Chemistry
ISBN:9781305577190
Author:Kenneth L. Williamson, Katherine M. Masters
Publisher:Brooks Cole
Appl Of Ms Excel In Analytical Chemistry
Chemistry
ISBN:9781285686691
Author:Crouch
Publisher:Cengage
Principles of Modern Chemistry
Chemistry
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:Cengage Learning
Chemistry & Chemical Reactivity
Chemistry
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:Cengage Learning
Chemistry & Chemical Reactivity
Chemistry
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:Cengage Learning