1. Nitric Dioxide in Urban
Air: Its Origin, Concentration and Fate (one week)
2. Lead in Soil (two weeks)
3. Lead in Shells (one week)
4. PCBs in the lower Hudson
River sediments (two weeks)
5. Pesticides in fruits and
vegetables (two weeks)
6. Hudson River water Basic
Characteristics of Natural Waters (one week)
7. Nitrates in Soils (one
week)
8. Air filtration: Removal of
ammonia
9. Water filtration:
Activated carbons
WEBSITE: http://www.sci.ccny.cuny.edu/~tbandosz
Blackboard site: Please follow CCNY portal
instructions
HOME ASSIGNMENT: Before each lab read
carefully the experiment description and refer to the chapter in the text book
(Manahan, Environmental Chemistry) dealing with the particular chemistry
content objectives
QUIZZES: Before each laboratory starts the
students will be asked to find an answer for one question or solve the problem
(15 minute quiz) dealing with the experiment which they are about to do. The
grading from quizzes will consist of 10 % of the total laboratory grade.
Students
are required to start their laboratory experiments on time
ATTENDANCE:
You are required to come to the lab on
time. Attention: there will be a lateness penalty (10 points out of 100) of you
show up later than 5:15 p.m. Moreover, if you are late you will not get your
quiz points (10%). If you do not show up at all, your grade will be zero.
PERFORMANCE:
á
Always
prepare for the lab, so you can do the experiment efficiently.
á
Handle the
equipment and chemical with care. Attention: safety glasses must be worn while
working with chemicals - you will not be allowed to work if you do not bring
them.
á
Keep your
workplace clean
á
Record the
measurements, calculations and results in a bind book.
á
Before you
leave the lab, the instructor should see your results and sign there (you may
have to show the original results to the instructor later, so do not lose your
notebook). At that time ask any questions you have about carrying out the
calculations, doing the report, etc.
REPORT:
The lab report should be typed or hand
written legibly on white 8.5 x 11 format paper and handed in to the instructor
on week after the experiment. Late reports will not be accepted.
The report should include:
*
Theoretical
part (do not write too much-it should not take more than one page)
*
Experimental
procedure
*
Data
analysis: detailed calculations using significant figures and correct units. If
there are any graphs, they should also be included in this section. The graph
should be done using computer programs. If computer is not available, graphs
can be done on an accurate graph paper. In both cases linear regression
analysis is to be used to analyze data if linear dependence is expected.
*
Discussion:
discuss your results and analyze sources of errors that might have occurred
during your experiment. Explain how these errors could have been avoided.
*
Answer to
questions if there were any.
GRADING
Quiz 10%
Performance
in the class 10%
Form of the
lab report 10%
Results
& calculations 50%
Discussions 20%
To arrange
a make up of the lab a note from a doctor, etc. HAS TO be shown.
Academic integrity: The CCNY policy on academic integrity will be followed. Document is posted on the CCNY website (CUNY policy on academic integrity—link is at the bottom of the home page). Make sure you have read the details regarding plagiarism and cheating, in case you are not clear about the rules of the college. Cases where academic integrity is compromised will be prosecuted according to these rules.
SUGGESTED
TECHNIQUES:
* Before filling a pipette or burette always
rinse it with small portions of solution.
* In reading meters and burettes, be careful
to avoid parallax.
* Always read your burette to the second
decimal.
* Never weight either a hot or a cold sample
* never put a pipette into a bottle of stock
reagents. You can contaminate the solution and ruin every determination made
with it. Instead, pour some of the solution into a dry beaker and pipette from
the beaker. Discard the residue
* Use graduated cylinder only for measuring
approximate volumes
LABORATORY EXERCISES
AND CHEMISTRY CONTENT OBJECTIVES
¬
Experiment # TOPIC
and chemistry content objectives
1. Nitric Dioxide in Urban Air:
Its Origin, Concentration and Fate (one week)
*
To learn an
experimental method of detecting NO2 in air
*
To apply
BeerŐs Law and spectrophotometry in environmental analysis
*
To determine
correlation between NO2 concentration in air and sources of
environmental NO2 pollution.
2 & 3. Lead in Soil (two
weeks)
*
To learn an
experimental method of detecting lead in soil
*
To apply
BeerŐs Law and spectrophotometry in environmental analysis
*
To determine
correlation between lead level in soil and sources of environmental lead
pollution.
4. Lead in
Shells (one week)
*
To
investigate the sources of natural water pollution.
*
To apply
voltammetry to determine trace amounts of pollutants
*
To determine
the content of lead in shells of living organisms
5 & 6. PCBs
in the lower Hudson River sediments (two weeks)
*
To
investigate the sources of the Hudson River Pollution.
*
To apply gas
chromatography with MS detector
*
To determine
the content of PCBs in river sediments
7. The Hudson River Water: Basic Characteristics of Natural
Waters (
*
to apply the
titration (acid-base), potentiometric and electrochemical methods in
environmental analysis
*
To determine
the basic characteristics of natural water
8. Sources of
Odor from The Hudson River: Determination of Hydrogen Sulfide Concentration
*
To investigate the
sources of river water odors
*
To apply BeerŐs Law and
spectrophotometry in environmental analysis
*
To determine
correlation between the Hudson River odor and the hydrogen sulfide
concentration
9. Nitrates in Soils
*
To
investigate the natural characteristics of soils
*
To apply the
potentiometric and spectroscopic methods in environmental analysis
*
To determine
the content on nitrates in NYC soils.
10. Air
filtration: removal of ammonia
*
To
investigate the means for air cleaning
*
To learn
about the relationship between the properties of adsorbents and their
performance
*
To use the dynamic adsorption experiments
11.Water filtration: Sorption of
Anilines and Carboxylic Acids on Activated
*
To
investigate the pollution of water
by organic
*
To explore the means of water filtration
*
The evaluate
the efficiency of adsorbents
Telephone:
(212) 650-6017; E-mail: tbandosz@scisun.sci.ccny.cuny.edu
