BuyFind

Principles of Instrumental Analysis

7th Edition
Douglas A. Skoog + 2 others
Publisher: Cengage Learning
ISBN: 9781305577213
BuyFind

Principles of Instrumental Analysis

7th Edition
Douglas A. Skoog + 2 others
Publisher: Cengage Learning
ISBN: 9781305577213

Solutions

Chapter 1, Problem 1.12QAP
Interpretation Introduction

(a)

Interpretation:

Publication year and the authors of the latest edition of Compendium of Chemical Terminology available in IUPAC website should be located.

Interpretation Introduction

(b)

Interpretation:

Definition and symbology of biasstated in Compendium of Chemical Terminology available in IUPAC website should be located and compared with the definition and symbology in the book chapter.

Interpretation Introduction

(c)

Interpretation:

Definition and symbology of detection limit stated in Compendium of Chemical Terminology available in IUPAC website should be located and compared with the definition and symbology in the book chapter.

Interpretation Introduction

(d)

Interpretation:

Differences between calibration sensitivity and analytical sensitivity should be stated.

Interpretation Introduction

(d)

Interpretation:

Calibration sensitivity, analytical sensitivity of each concentration, coefficient of variation for mean signal values of each replicate set and the detection limit for the method should be determined.

Concept introduction:

Following formulae should be used to determine each required numerical quantity.

For calibration sensitivity ( m ):

m=SxySxxwhere,Sxy=xiyixiyiN and Sxx=xi2(xi)2N

For analytical sensitivity ( γ ):

γ=m/ssWhere, ss=standard deviation of the measurement

For coefficient variation (CV):

CV=sx¯×100%Where, s=standard deviation, x¯=sample mean

For Detection limit ( cm ):

cm=SmS¯blmWhere, Sm=S¯bl+ksblSm=minimum distinguishable analytical signalS¯bl=mean blank signalk=constant (k=3)sbl=standard deviation of the blank

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