分析化學 Analytical Chemistry 沈川洲 Chuan-Chou (River) SHEN; TA: 邱瀚毅, Course description:This course is intended for sophomores in the Dept. of Geosciences. Juniors and seniors are also welcomed. It will approach quantitative analysis first from a classical point of view. Instructor will also review and expand upon the fundamental properties of some modern techniques, which are useful in geochemical analysis. This course emphasizes both theoretical and practical aspects of analytical techniques for geochemistry. Because laboratory experience is the essence of quantitative analysis, a course, “Analytical Chemistry Laboratory”, should be taken together with this course to learn the basis of good laboratory practice. After taking this class, students, with a body of geo-analytical knowledge, will be able to design an experimental procedure to solve real or hypothetical problems. They will also learn how to independently accomplish general chemistry in a geochemical lab.

Literature: Quantitative Chemical Analysis (6th ed., 2003) by Daniel C. Harris Fundamentals of Analytical Chemistry by Skoog and West Exploring Chemical Analysis (2nd ed., 2001) by Daniel C. Harris Statistics for Analytical Chemistry by Miller and Miller Credits: 2 (+1: experiment) Class hours: 8:10-10:00 pm, Friday Grading:Homework, 30%; Midterm exam, 30%; Final exam, 30%; Class participation, 10%.

Syllabus: SeptIntroduction, Units, tools, basic concepts. OctError, statistics and excel spreadsheets Calibration methods. Chemical equilibrium. Nov Basic concepts on titrations, Acid-base titration. Introduction to chromatography. Ion exchange chromatography. Nov 28Midterm exam. DecGeochemical samples, sampling and preparation. Quality Assurance. JanAnalytical methods for geo-environmental samples. Electrochemistry. Jan 16Final exam.

Experiments: 1Balance calibration; dollar statistics. 2Calibration of volumetric labware. 3Preparing standard acid and base. 4Analysis of a mixture of carbonate and bicarbonate. 5Titration of bases in household drain cleaners. 6EDTA titration of Ca 2+ and Mg 2+ in natural water 7Capacity of ion-exchange resins

a.Increased availability of toxic Al 3+ to a pine tree in Germany near a coal-burning power plant built in The increase is probably an effect of man-made acidity in rainfall, which mobilizes Al 3+ from minerals. b.The growth of atmospheric CO 2. CO 2 comes from our burning of fossil fuel and destruction of forests. c.The growth in world population. How long will our planet remain habitable if we do not control our population and our impact on the environment?

Calibration Curves

0-1 The Analytical Chemist’s Job Bates College in Maine, Professor Tom Wenzel Students: Denby and Scott Sampling Homogeneous: same throughout Heterogeneous: differs from region to region, Chocolate with nuts Sample Preparation Substances being measured caffeine and theobromine in this case are called analytes.

Chemical Analysis (classical or instrumental) Identifying what is in an unknown is called qualitative analysis. Identifying how much is present is quantitative analysis.

Calibration Curves

Interpreting the Results

Analytical results, data interpretation, application

General Steps in a Chemical Analysis 1.Formulating the question 2.Selecting analytical procedures 3.Sampling 4.Sample preparation 5.Analysis 6.Reporting and interpretation 7.Drawing conclusions