Introduction to General, Organic and Biochemistry
11th Edition
ISBN: 9781285869759
Author: Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher: Cengage Learning
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Chapter 30, Problem 30.38P
Interpretation Introduction
Interpretation:
The best dietary sources of Calcium, Phosphorus and Cobalt are to be discussed upon.
Concept Introduction:
- Minerals are.
inorganic chemical substances needed by one’s body for its proper functioning.
- Mineral nutrients for human bodies consist of Calcium, Phosphorus, Iron, Magnesium and many more.
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(a
4 shows scanning electron microscope (SEM) images of extruded
actions of packing bed for two capillary columns of different diameters,
al 750 (bottom image) and b) 30-μm-i.d. Both columns are packed with the
same stationary phase, spherical particles with 1-um diameter.
A) When the columns were prepared, the figure shows that the column with
the larger diameter has more packing irregularities. Explain this observation.
B) Predict what affect this should have on band broadening and discuss your
prediction using the van Deemter terms.
C) Does this figure support your explanations in application question 33?
Explain why or why not and make any changes in your answers in light of
this figure.
Figure 4 SEM images of
sections of packed columns
for a) 750 and b) 30-um-i.d.
capillary columns.³
fcrip
= ↓ bandwidth Il temp
32. What impact (increase, decrease, or no change) does each of the following conditions have on the individual
components of the van Deemter equation and consequently, band broadening?
Increase temperature
Longer column
Using a gas mobile phase
instead of liquid
Smaller particle stationary phase
Multiple Paths
Diffusion
Mass Transfer
34. Figure 3 shows Van Deemter plots for a solute molecule using different column inner diameters (i.d.).
A) Predict whether decreasing the column inner diameters increase or decrease bandwidth.
B) Predict which van Deemter equation coefficient (A, B, or C) has the greatest effect on increasing or
decreasing bandwidth as a function of i.d. and justify your answer.
Figure 3 Van Deemter plots for hydroquinone using different column inner diameters (i.d. in μm). The data was
obtained from liquid chromatography experiments using fused-silica capillary columns packed with 1.0-μm particles.
35
20
H(um)
큰 20
15
90
0+
1500
100
75
550
01
02
594
05
μ(cm/sec)
30
15
10
Chapter 30 Solutions
Introduction to General, Organic and Biochemistry
Ch. 30 - Are nutrient requirements uniform for everyone?Ch. 30 - Is banana flavoring, isopentyl acetate, a...Ch. 30 - If sodium benzoate, a food preservative, is...Ch. 30 - Prob. 30.4PCh. 30 - Prob. 30.5PCh. 30 - Prob. 30.6PCh. 30 - Prob. 30.7PCh. 30 - Can a chemical that, in essence, goes through the...Ch. 30 - Prob. 30.9PCh. 30 - Prob. 30.10P
Ch. 30 - Prob. 30.11PCh. 30 - Prob. 30.12PCh. 30 - Prob. 30.13PCh. 30 - Humans cannot digest wood; termites do so with the...Ch. 30 - Prob. 30.15PCh. 30 - Prob. 30.16PCh. 30 - Prob. 30.17PCh. 30 - Which nutrient provides energy in its most...Ch. 30 - Prob. 30.19PCh. 30 - Prob. 30.20PCh. 30 - Prob. 30.21PCh. 30 - Prob. 30.22PCh. 30 - Is it possible to get a sufficient supply of...Ch. 30 - Prob. 30.24PCh. 30 - Prob. 30.25PCh. 30 - 30-26 Which one will be digested faster: (a) a raw...Ch. 30 - Prob. 30.27PCh. 30 - Prob. 30.28PCh. 30 - Prob. 30.29PCh. 30 - Prob. 30.30PCh. 30 - Prob. 30.31PCh. 30 - Prob. 30.32PCh. 30 - Prob. 30.33PCh. 30 - Prob. 30.34PCh. 30 - Prob. 30.35PCh. 30 - Prob. 30.36PCh. 30 - What are the nonspecific effects of vitamin E, C,...Ch. 30 - Prob. 30.38PCh. 30 - Prob. 30.39PCh. 30 - Prob. 30.40PCh. 30 - Prob. 30.41PCh. 30 - Why would many athletes believe that taking large...Ch. 30 - Prob. 30.43PCh. 30 - (Chemical Connections 30A) What is a...Ch. 30 - Prob. 30.45PCh. 30 - Prob. 30.46PCh. 30 - Prob. 30.47PCh. 30 - Prob. 30.48PCh. 30 - Prob. 30.49PCh. 30 - Prob. 30.50PCh. 30 - Prob. 30.51PCh. 30 - Prob. 30.52PCh. 30 - Prob. 30.53PCh. 30 - Prob. 30.54PCh. 30 - Prob. 30.55PCh. 30 - Prob. 30.56PCh. 30 - Prob. 30.57PCh. 30 - Prob. 30.58PCh. 30 - Prob. 30.59PCh. 30 - Prob. 30.60PCh. 30 - Prob. 30.61PCh. 30 - Prob. 30.62PCh. 30 - Prob. 30.63PCh. 30 - Prob. 30.64PCh. 30 - Prob. 30.65PCh. 30 - Prob. 30.66PCh. 30 - Prob. 30.67PCh. 30 - Prob. 30.68PCh. 30 - Prob. 30.69PCh. 30 - Prob. 30.70PCh. 30 - Prob. 30.71PCh. 30 - Prob. 30.72PCh. 30 - Prob. 30.73PCh. 30 - Prob. 30.74PCh. 30 - Prob. 30.75PCh. 30 - Prob. 30.76PCh. 30 - Why is it necessary to have protein in our diets?Ch. 30 - Prob. 30.78PCh. 30 - Prob. 30.79PCh. 30 - Prob. 30.80PCh. 30 - Prob. 30.81PCh. 30 - Prob. 30.82PCh. 30 - Egg yolk contains a lot of lecithin (a...Ch. 30 - Prob. 30.84PCh. 30 - Prob. 30.85PCh. 30 - Prob. 30.86P
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