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 27, Problem 27.23QAP
Interpretation Introduction

(a)

Interpretation:

Retention factors for each component should be calculated.

Concept introduction:

The retention factor can be calculated as follows:

k=tRtMtMwhere:k=RetentionfactortR=RetentiontimeofinterestedspeciestM=Migrationtimeofunretainedspecies

Interpretation Introduction

(b)

Interpretation:

Selectivity factor for methyl acetate and methyl propionate and methyl propionate and n-butyrate should be calculated.

Concept introduction:

Selectivity factor can be calculated as follows:

Methyl acetate and methyl propionate.

Methyl propionate and n-butyrate.

α=(tR)BtM(tR)AtMwhere:a=Selectivityfactor(tR)Aand(tR)B=RetentiontimeofsubstanceAandBrespectivelytM=Migrationtimeofunretainedspecies

Interpretation Introduction

(c)

Interpretation:

Average plate number and plate height should be calculated.

Concept introduction:

Number of theoretical plates can be calculated as follows:

N=16(tRW)2where:N=NumberofplatestR=RetentiontimeW=Widthofpeakbase

Plate height can be calculated using following equation.

H=LNwhere:H=PlateheightL=LengthofcolumnpackingN=Numberofplates

Interpretation Introduction

(d)

Interpretation:

Resolution formethyl acetate and methyl propionate and methyl propionate and n-butyrate should be calculated.

Concept introduction:

Resolution can be calculated as follow:

R=2[(tR)B(tR)A]WA+WBwhere:R=Resolution(tR)Aand(tR)B=RetentiontimesofAandBrespectivelyWAandWB=PeakwidthsforAandB

Want to see the full answer?

Check out a sample textbook solution.

Want to see this answer and more?

Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*

*Response times may vary by subject and question complexity. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers.