PRINCIPLES OF INSTRUMENTAL ANALYSIS
PRINCIPLES OF INSTRUMENTAL ANALYSIS
7th Edition
ISBN: 9789353506193
Author: Skoog
Publisher: CENGAGE L
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Chapter 26, Problem 26.18QAP
Interpretation Introduction

(a)

Interpretation:

Average number of plates should be calculated.

Concept introduction:

Number of theoretical plates is given by following equation:

N = 16(tRW)2

N = number of plates

tR = retention time

W = width of peak base

Average = NA+NB+NC+ND4

Interpretation Introduction

(b)

Interpretation:

Standard deviation for the N should be calculated.

Concept introduction:

Standard deviation will give how the values deviate from mean value of N.

Interpretation Introduction

(c)

Interpretation:

Average plate height of column should be calculated.

Concept introduction:

N=LH

N = plate count

L = length of the packing (cm)

H = height of the column

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