Analytical Chemistry II and Laboratory M - Z

Academic Year 2023/2024 - Teacher: ROBERTA D'AGATA

Expected Learning Outcomes

The aim of the course is to provide basic principles of instrumental analysis. After finishing the course, students should be able to assess the potential, advantages, and limitations of the discussed methodologies with an emphasis on spectroscopy and electrochemical techniques.

In particular, students must acquire the following skills:

Knowledge and understanding in the field of instrumental analytical chemistry with emphasis on spectroscopic and electrochemical techniques, statistical processing of experimental data and presentation of results.

Ability to apply knowledge and understanding acquired in the field of instrumental analytical chemistry in order to face and solve all the issues related to the topics covered.

Autonomy of judgment and development of critical learning pursued through the interaction between the teacher and the students on the basis of the experiences carried out during the laboratory.

Communication skills based on the ability to communicate acquired knowledge, exposing information and ideas in a clear and understandable way.

Long learning skills necessary to undertake further studies with a high degree of autonomy.

Course Structure

Lectures on theory are complemented with practical laboratory experiences in small groups working in Lab. During the lectures, it will provide all information needed to allow for the understanding and the implementation of laboratory operations along with the critical assessment and interpretation of the analytical results of testing methods and the presentation of procedures and results in concise written reports.

Should teaching be carried out in mixed mode or remotely, it may be necessary to introduce changes with respect to previous statements, in line with the programme planned and outlined in the syllabus.

Learning assessment may also be carried out online, should the conditions require it.

Required Prerequisites

Prerequisites: Fundamentals of General Chemistry, Organic Chemistry, Physics, Mathematics, and Analytical Chemistry I


Attendance of Lessons

Class attendance is mandatory. 

Detailed Course Content

1. Spectroscopy


Electromagnetic radiation: photoelectric effect, diffraction, mathematical representation, electromegnetic spectrum, refraction, refraction index, Snell law, total internal reflection. Radiation-matter interaction: replection, transmission/adsorption, diffusion( Rayleigh, Mie, Raman). Polarization. Adsorption and emission of radiation. Atomic adsorption.


Molecular adsorption: vibration and rotation. Fluorescence and phosphorescence. Jablonski diagram.


2. UV-vis spectroscopy


Trasmittance, adsorbance, Beer’s law: limit, chemical deviations, instrumental deviations. Photometers and spectrophotometers. Spetrophotometers: single beam, double beams. Sources. Filters and monochromators. Prisms. Transducers.


 


3. Infrared spectroscopy


Armonic and anarmonic oscillators. Vibrational modes, Fourier transform. Michelson interferometer. Sources. Infrared spectra. Sample requirements. Diffuse reflectance. ATR. Ifrared microscopy.


 


Raman spectroscopy


Raman effect. Polarizability. Comparison with IR spectroscopy. Sources. Raman microscopy.


Electroanalytical methods. Potentiometry


X-ray Fluorescence.


Laser


Statistics.


Diodes. LED, Operational amplifiers.


Textbook Information

-Skoog, Holler, Nieman , "PRINCIPLES OF INSTRUMENTAL ANALYSIS" , Brooks Cole.

The slides of the lessons and any educational material for further information are made available on Studium.

Course Planning

 SubjectsText References
11.SpettroscopiaSkoog, Leary, “Chimica Analitica Strumentale”, Edises
22.Spettroscopia UV-visSkoog, Leary, “Chimica Analitica Strumentale”, Edises
33.Spettroscopia infrarossaSkoog, Leary, “Chimica Analitica Strumentale”, Edises
44.Spettroscopia RamanSkoog, Leary, “Chimica Analitica Strumentale”, Edises
55.Metodi elettrochimiciSkoog, Leary, “Chimica Analitica Strumentale”, Edises
66.Fluorescenza di Raggi XSkoog, Leary, “Chimica Analitica Strumentale”, Edises
77.LaserSkoog, Leary, “Chimica Analitica Strumentale”, Edises
88.Statistica Maria Garetto, "STATISTICA Lezioni ed esercizi". QUADERNI DIDATTICI del Dipartimento di Matematica. Università di Torino.

Learning Assessment

Learning Assessment Procedures

Final exam: Oral test and evaluation of written reports on Laboratory experiences.

The oral test will aim to ascertain the level of knowledge acquired by the student on the topics and themes covered during the lectures, the pertinence of scientific language (precise and consistent), and critical thinking regarding applicative considerations and issues.

Lab written reports: the student must provide a written paper describing the objective of the experiences, the followed experimental procedures, the results obtained, and their elaboration and critical assessment.

Learning assessment may be carried out online if the conditions require it.






Examples of frequently asked questions and / or exercises

Properties of electromagnetic radiation


Wave and corpuscular phenomena

Similarities and differences between IR and Raman spectroscopy

Different origins of the potential in metallic and membrane electrodes

Fluorescence and X-ray Absorption and Competitive Processes

Three and four-level lasers and tunable lasers

The operational amplifiers in the load error