CE 540
Spring 2007
9 January – 27
February 2007
CE 540 is divided into two sections:
ˇ the first half of the course (George Mount) will cover atmospheric applications of spectroscopic instrumentation
ˇ the second half of the course (Tom Jobson) will cover atmospheric applications of chromatography and mass spectrometry techniques.
The purpose of the first section
of the class is to familiarize you with spectroscopic instrumentation for air
concentration measurements. We
will begin with a discussion of spectrographs and how they work and then move
to specific techniques for measurement (LiF, TDL, FTIR, DOAS, etc). I will have lab demos as often as I
can; you should be sure to ask lots of questions during those demos so you understand what is going on. Donšt
let anything slide by in class or lab that is not clear – bug me
until it is clear!
Since there is no text book for the class; journal papers will be placed on the department CE 540 website during the semester and you are expected to read them. Some are very long, so you can cruise over the parts that are not of great interest. Quizzes will cover the reading material.
There will be homework in the
class.
You are required to write a
term paper/project on a subject of your choice, approved by either Dr. Mount or
Dr. Jobson; one project for either
but not both sections of the 540 class – a single class project. You will be asked to make a 20 minute
presentation on your project at the end of April. The presentation and writeup must include some
scientific/mathematical and/or experimental analysis of whatever you do.
There
will be one exam in the first section and it will be given at a mutually
agreeable time at the end of the spectroscopy section, not during a class
period (time is too short).
Grades:
Each
half of the course of equal weight.
The term paper will account for 20% of the total class grade and the
presentation 20% of the total class grade for a total of 40% of the total class
grade.
Spectroscopy
and chromatography (each 30% of class grade):
ˇ
15% exam
ˇ
15% homework and quizzes
Schedule:
9 - 23 January 2007
basic concepts and spectroscopic instruments, lab demonstrations
ˇ spectra – atomic and molecular
o some basic physics
o effects of resolution
ˇ basic types of spectroscopic instruments
o grating systems
o prism systems
o interferometer systems
o laser systems
spectrometers
ˇ basic design of a grating system
ˇ parts
o slit
o collimator
o disperser
o camera
o focal plane
o classical vs holographic gratings
ˇ parameters
o dispersion
o resolving power
o throughput
o polarization
o free spectral range and bandwidth, overlapping orders
ˇ mountings
ˇ choice of instrument
25 January
detectors
30 January
lab show and tell - spectrographs
1 - 6 February
DOAS = differential optical absorption spectroscopy
8, 15 February
LIF = laser induced fluorescence spectroscopy
15, 20 February
TDL = tunable diode laser spectroscopy
22, 27 February
FTS = Fourier Transform Spectroscopy
air section exam
1 – 22 March
Chromatography
ˇ
General principles and applications to atmospheric
measurements
o
GC = gas chromatography
o
HPLC = high performance liquid chromatography
o
IC = ion chromatography
ˇ
GC detectors and trace gas analysis methods
27 March – 19 April
Mass spectrometry
ˇ
General principles and ionization methods
ˇ
Mass spectrometer designs
o
Quadrupole
o
Ion trap
o
Time of flight
ˇ
Instrumentation for atmospheric measurements
o
PTR-MS = proton transfer reaction MS
o
AMS = aerosol mass spectrometer
o
SPLAT = single particle laser ablation ToF
Last week of April
Project results @ 20 min/student
Term paper due last day of class