ANNOUNCEMENTS

Week of October 28

Catch-up day in lab:
  • Lead calculations
  • Discussion of lead data
  • Finish any remaining soil pH work
  • Do final data entry for lead lab
  • Introduction to pesticide lab
  • Preparation of a working plan for the pesticide extraction

    The back room of the Bixby Computer Center is reserved for the Environmental Chemistry class on Thursday, October 31 from 6-10 p.m. If you would like more help with using Excel for data presentation, please stop by during these hours.

    Week of November 4

    Lead Lab reports due THIS WEEK, at the beginning of discussion.

    This week you will be doing the pesticide extraction. This is a long experiment---please come prepared!

    Reading

  • Introduction to the experiment, pp. 46-48 and 86-92
  • Pesticide extraction procedures, pp. 106-112
  • Gas chromatography, pp. 78-82

    You might want to re-read the following section

  • Solubilities of Organic Compounds, pp. 64-71

    If you want to analyze produce you are particularly interested in, please feel free to bring it to lab. Be sure it is listed as one of the acceptable types of produce, as listed in the table on p. 106.

    Week of November 11

    No lab this week. Midterm III is on Tuesday evening. Good luck!

    Week of November 18

    This week you will analyze the GC data from the pesticide extraction experiment and begin your planning for the pesticide debate that will take place next week.

    Reading
  • Interpretation of gas chromatograms, pp. 113-114
  • Calculations for the acetonitrile extraction, pp. 117-118.
  • Risk assessment, pp. 50-60
  • Preparation for the debate, pp. 120-125.

    You might want to re-read the following sections

  • Gas chromatography, pp. 78-82
  • Solubilities of Organic Compounds, pp. 64-71

    Prelab Assignment:
    Do the Risk Assessment exercise on p. 61 in your lab notebook. Be prepared to turn in the yellow sheet at the beginning of the lab period.

    Week of November 25

    NOTE: We DO have lab this week, even the Wednesday group. Do not schedule conflicts!

    The Pesticide Debate. You will work in groups to construct an argument for or against the use of pesticides in our food supply and use your information to debate the issue.

    Reading

  • Organochlorine Pesticides, pp. 86-104
  • Your individual assigned reading, to be assigned the week before in class.

    You might want to re-read the following sections

  • Risk assessment, pp. 50-60
  • Preparation for the debate, pp. 120-125.

    Prelab Assignment:
    Prepare 11 copies of a written summary of your individual assigned reading and come prepared to give a verbal summary of the article to your group. Please note that your group is counting on you as a source of information from your article. It is important that you do this assignment thoroughly!

    Week of December 2

    Check out, evaluations of the course.

    Week of December 9

    Final exam, December 9

    Week of August 26

    Welcome to the Environmental Chemistry Lab! This week is check-in and orientation.

    Contact Dr. Susan Kegley for assistance in registering for these lab sections.

    Week of September 2

    Field trip week for ALL lab sections, even Monday and Tuesday. Meet promptly at 1:10 p.m. in the lab room EXCEPT for the Tuesday afternoon section.

    The Tuesday afternoon group should meet at the Hearst Mining Circle bus stop in time to catch the 12:45 Hill Bus up to the Botanical Gardens. Look for Clark Lin or Susan Kegley at the bus stop for help. If you miss the 12:45 bus, you should either walk (if you know where to go) or wait to catch the 1:15 bus. Please be on time!

    Strawberry Creek Sampling Plan

    Zone 1: Eucalyptus Grove to Sather Gate, Tuesday morning
    Zone 2: North Fork, Monday afternoon
    Zone 3: Sather Gate to Chemistry, Wednesday afternoon
    Zone 4: Botanical Gardens, Tuesday afternoon

    Week of September 9

    Water quality analyses begin in lab. Be sure to read the following sections in the lab manual before coming to lab and answer the pre-lab questions.

    Acids and Bases

  • Theory, pp. 56-62 (skim this)
  • Procedures, pp. 63-69 (read thoroughly)

    Anions in Natural Waters

  • Theory, pp. 72-81 (skim this)
  • Procedures, p. 82 (read thoroughly)

    Cations in Natural Waters

  • Theory, pp. 84-93 (skim this)
  • Procedures, pp. 94-96 (read thoroughly)

    Week of September 16

  • No lab this week. Midterm I on Tuesday evening.
  • Appendices on pH and alkalinity and Ion Chromatography are due on September 20. Turn your paper in to your TA's folder in the lab room.

    Week of September 23

    NOTE: The due date for the appendix on AA spectroscopy was incorrectly put in your handout as due in lab the week of September 23. The ACTUAL due date is in lab the week of September 30.

    Finish up water quality analyses. Be sure that you have thoroughly read all of pp. 56-96 in the laboratory manual. By the end of this laboratory period, you and your labmates should have collected the following data on your sample:

  • fecal coliform
  • any field measurements of dissolved oxygen, turbidity, and conductivity
  • pH and alkalinity
  • conductivity
  • sodium concentration by AAS
  • calcium concentration by AAS
  • magnesium concentration by AAS
  • anion concentrations by IC

    All data must be entered into the computer in the lab room by the end of your lab period the week of September 23

    Week of September 30

    Week of October 7

    Week of October 14

    Week of October 21


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