Quantitative Analytical Chemistry

Chem 222 Quantitative Analytical Chemistry Text book:  Modern Analytical Chemistry, Harvey  http://web.me.com/dtharvey1213/Analytical_Chemistry_2 0/Analytical_Chemistry_2.0.html  Analytical Chemistry, Harris  Lecturer:  Phạm Thị Ngọc Mai  Email: m.t.n.pham@gmail.com Study activities: - Lecture - Individual study - Discussion, exercises, seminars in group (each group consists of 34 students) - Homework: problem sets, will be sent by email - Pop-up quizzes, Exams Grading : - Final exam: 60% - Middle exam: 20% - Homework, exercise, seminar, discussion, quizzes: 20% Attention: - Feel free to ask questions and correct teachers!! - Keep silence in class, if somebody feels tired or bored, he or she can sleep or ask to go out! Lecture Introduction to Analytical Chemistry  Why we have to learn analytical chemistry?  How important is analytical chemistry?  What are we going to learn? What’s analytical chemistry? “Analytical chemistry is what analytical chemists do” C.N.Reilly (1925-1981)  Perform a chemical analysis  Improve established analytical methods  Extend existing analytical methods to new types of samples  Develop new analytical methods for measuring chemical phenomena Example: The development of Ni2+ determination  Gravimetry days  F-AAS few hours  ICP-MS few minutes, don’t have to separate from other metals Classify analytical problems •Chemical analysis includes any aspect of the chemical characterization of a sample material Quantitave analysis: How much present? Qualitative analysis: what’s present? Analytical problems Main subject Characterisation analysis What are chemical and physical properties? Fundamental analysis: Improve method Classify analytical techniques of signal Concentration Sa = kNumber n S = k C a a ; a a a moles  Total analysis techniques (chemical technique):    Sa = kana  Gravimetry; Titrimetry  High precision, low cost, long time, high concentration  Concentration technique (instrumental technique): Sa = kaCa Spectroscopy; electrochemistry (chromatography; kinetic )  Low precision, high cost, short time, low concentration, (ppm, ppb )  If we want to measure the concentration of As in drinking water, what are we going to do? Steps of an analysis process Chapter Vocabulary of analytical chemistry Chapter Evaluate data Chapter Collect and prepare sample Chap.8 Gravimetry Chap Titrimetry Chap.10 Spectroscopic method Chap.11 Electrochemical method Chap.12 Chromatographic and electrophoretic methods Chap.13 Kinetic methods -Instrumental methods: Surface and structure charaterisation: NMR, AFM, SEM, TEM, ; Thermal method: DTA, DSC, Chapter Standardize analytical method ... Introduction to Analytical Chemistry  Why we have to learn analytical chemistry?  How important is analytical chemistry?  What are we going to learn? What’s analytical chemistry? Analytical chemistry. ..Text book:  Modern Analytical Chemistry, Harvey  http://web.me.com/dtharvey1213 /Analytical_ Chemistry_ 2 0 /Analytical_ Chemistry_ 2.0.html  Analytical Chemistry, Harris  Lecturer: ... Analytical chemistry is what analytical chemists do” C.N.Reilly (1925-1981)  Perform a chemical analysis  Improve established analytical methods  Extend existing analytical methods to new types