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November 29, 2011

Lecture 38 - More Voltammetry (Prior lecture 34)

This lecture was renumbered from Lecture 34 to Lecture 38. If you already printed the notes for Lecture 34, you do not need to print them again.Lecture38-111215.pdf

Lecture 33 - Linear Voltammetry


Midterm 3 Homework Solutions

Attached are the homework solutions to the book problems.

Lecture 33 and 34 solutions will be posted Friday.

Lecture 25, 28, 29, 32 HW Solutions.pdf

November 28, 2011

Blog 8

Grades have been posted.

Blog 9, 10, and 11 Grades...

...have been posted.

November 23, 2011

Blog 13 - Electrochemistry

This blog posting is due on Dec 7 before class.


Blog 12 - Poster critiquing

There is no need to post in the blog. You will do this activity in class (Nov 28). Read the instructions provided on Monday November 21.


Seminar - Gerardo Gamez - December 1, 2011

Monday, October 3, 2011

Dr. Gerardo Gamez
Swiss Federal Laboratories for Materials Science and Technology, Thun Switzerland

Time: 8:30 AM
Room: 220 STSS

Glow Discharge Plasmas in Analytical Spectrochemistry: Not Just for Elemental Depth Profiling Anymore!

Seminar link: http://www.chem.umn.edu/seminar/

Exam 3 - Example


Lecture 32 - Electroanalytical, Introduction


November 18, 2011

CE Instrumentation tour - November 21, 2011

Date: November 21, 2011
Time: 8:15 to 8:45
Meeting place: 84 Kolthoff Hall
Tour Guide: Chad Satori

Similar to seminars, bonus points will be given to those posting in the blog after attendance to this tour.CE Instrumentation Visit - 2011.pdf

Answer only one of the questions below.

1. How many CE instruments are currently available in the Arriaga Lab? How many instruments are custom-built and how many instruments are from commercial sources?
2. What are typical injection modes that these instrument use?
3. What types of detectors do these instruments have?
4. What are typical sample volumes needed? What are typical sample volumes introduced into the capillary?
5. What is a sheath flow cuvette?
6. What is the difference between a post-column and on-column detection?
7. Give one difference (or advantages/disadvantages) between the custom-built and commercial instruments.
8. Would you be able to use any of the instrumentation shown to you for your analytical problem? Explain your answer.
9. What questions do you have that were not answered?

Lecture 31 - Poster Preparation

Prior to Monday class

1. Identify your assignments by looking at this file.

You may also wish to download a copy of the example poster that Edgar and Chad will critique.Chem4101-Poster-critiquing.pdf

2. Read the list of DO's and DON'Ts published by Block in Biophysical Journal, 1996, 71, 3527-3529. Temporary pdf file: Block-1996-How to do a poster presentation.pdf

Another useful reference by Huddle is found in the Journal of Chemical Education, 77(9), 1152 (2000).Temporary file:Huddle-2000-How to prep a talk or poster.pdf

3. Re-read the "Guidelines to prepare your analytical problem" posted in the blog at the beginning of the semester. Pay particular attention to items 5, 6, and 7.Defining and solving analytical chemistry problems-2011.pdf

3. Get familiar with the poster that you will critique on Monday. Based on your table assignment, choose one of the options below.

Table 1- Cupper in waste water.pdf

Table 2-Humulene in beer.pdf

Table 3-Growth Hormone in Milk.pdf

Table 4-Rape drugs in bar drinks.pdf

Table 5-Isobotulene in soil vapors.pdf

November 15, 2011

Lecture 20 - cIEF, CGE, recent developments

Professor Bowser may want to use some of this material on Wednesday class.


Links to articles used in the lecture notes include:

CE using sieving matrices: Anal. Chem. 1992, 64, 2665.

CE on a chip: Anal. Chem. 2001, 73, 1207.

Multiplex array CE: Anal. Chem. 1994, 66, 1424.

CE-MS : J. Chrom. B. 2009, 877, 1963.

CE-SELEX: Anal. Chem. 2005, 77, 6107.

Particle CE: Electrophoresis. 2002, 23, 2040.

Temporary files have been removed. Use links above.

November 14, 2011

BloG11 - CE

Post your answers by November 21, 2011 (before class).


Lecture 29 - CZE & MEKC


Other relevant references are:
J. Chrom. A, 1991, 546, 445

TRAC-Trends Anal. Chem., 1989, 8, 129

November 11, 2011

Lecture 28 - Capillary electrophoresis - Introduction


Useful Website for Outlines of Separation Techniques

Hello all,

I came across this website that has a multitude of outlines and reviews of specific separation techniques. Hope it can be of use :)


November 8, 2011

BLOG10 - Analytical problems using similar techniques

BLOG10-Chem4101-similar technique.pdf

Posting due on Wed November 16, 2011 before class

Lecture 27 - Technique selection - individual presentations


Everybody will need to prepare a one minute presentation. You will need to fill up the table found in the lecture notes and create a new blog comment.

If you wish to use a power point presentation, let me know ahead of time. Also bring your laptop and your VGA adaptor.

Lecture 26 - Recent chromatography developments



Chiral chromatography: Hühnerfuss and Shah, J. Chrom. A, 1216 (2009) 481-502.

GC x GC: Mitrevski et al., Anal. Bioanal. Chem. (2011) 401:2361-2371

LC x LC: Kivilompolo et al., LC•GC Europe, May 2011, 232-243

Microfluidics: Li et al., Anal. Chem., 2011, 83, 7863-7869

November 3, 2011

BLOG9 - Chromatographic separations

This blog posting is due on November 11, before class.


Lecture 25 - Ion-exchange, size-exclusion, affinity chrom.