Curricular Unit:			Code:
Electroanalytical Techniques			1100TELE
Year:	Level:	Course:	Credits:
2	CTSP	Laboratory Analyses	6 ects
Learning Period:		Language of Instruction:	Total Hours:
Winter Semester		Portuguese/English	78
Learning Outcomes of the Curricular Unit:
Electroanalytical techniques are the basis of a high percentage of common chemical analyses. These procedures rely on the measurements of potentials or electrical conductance of solutions, are easy, fast, have adequate sensitivity and allow determinations over a wide concentration range. In this course students acquire knowledge in the area of potentiometry and conductimetry that is essential to laboratory practice. The skills to be developed involve aspects inherent to quantitative analysis and the main objectives to be achieved are: O1. Identify the scope and application of electroanalytical techniques O2. Understand the principles of analysis, know the instrumentation and operating assumptions O3. Acquire the theoretical basis inherent to the treatment and statistical evaluation of experimental data O4. Develop laboratory skills to perform an analysis and interpret the results obtained
Syllabus:
1.Introduction to electroanalytical methods 2.Fundamentals of potentiometry 2.1.General aspects of potentiometric measurements 2.2.Ion-sensitive electrodes (ISE) 2.2.1.Characteristics and general mechanism of operation 2.2.2.Modified Nernst equation 2.2.3.Classification and main characteristics 2.2.4.Concepts and terminology: PDL; LLLR; sensitivity 2.2.5.Use of selective electrodes in analytical procedures: direct potentiometry; method of standard additions; potentiometric titrations 3.Conductimetry 3.1.Reference to some electrical quantities 3.2.Electrical quantities applied to electrolyte solutions 3.2.1.Factors affecting the conductance of an electrolyte solution: temperature, cell constant, ion mobility, ion concentration 3.2.2.Possibility of quantification 3.3.Devices for conductivity determinations 3.4.Conductimetric titrations 3.4.1.Shape of the curves and their correlation with the nature and concentration of the species 3.4.2.Correction of the dilution effect
Demonstration of the Syllabus Coherence with the Curricular Unit's Objectives:
The syllabus (PC) of the Electroanalytical techniques Curricular Unit provides students with the acquisition of scientific, technical and interpersonal skills that allow them to develop their future professional laboratory activity in this area. PC1 was designed to achieve goal O1. CP 2 and CP3 serve to achieve objectives O2, O3 and O4.
Teaching Methodologies (Including Evaluation):
M1: Exposition and debate of relevant theoretical concepts in the classroom. Didactic material will be made available on the platform. M2: Orientation of students' autonomous study in the practical component. In theoretical and practical classrooms, students will be asked to solve a series of questions with an objective answer and numerical problems. M3: Active participation of the student in the teaching-learning process through the execution of a set of laboratory works. Assessment: the acquisition of knowledge of the theoretical-practical component with a weighting coefficient of 35% in the final grade of the course is validated by carrying out 2 written tests: 70% (1st) and 30% (2nd). Practical component evaluation (with a weighting coefficient of 65% in the final grade) will be based on laboratory performance and on the worksheets delivered and (60%) on 2 written tests: 24% (1st) and 16% (2nd).The final classification will only be awarded if both components are approved
Demonstration of the Coherence between the Teaching Methodologies and the Learning Outcomes:
The constant interaction between the teacher and the student in class will allow the student to adapt to the proposed objectives. In the theoretical-practical classes, the general principles inherent to electroanalysis are exposed, ranging from the preparation and manipulation of solutions to the fundamental operations for the execution of an analytical procedure. The different types of quantification methods, their characteristics, advantages and disadvantages are studied. In the laboratory classes the student will consolidate the topics covered in the theoretical-practical component and become familiar with the practice of spectrophotometric analysis by performing a series of laboratory tasks. The methodologies (M) defined are articulated with the objectives (O) proposed: M1: Exposition and debate of relevant theoretical concepts in the classroom - Aims to achieve O1-O4. M2: Orientation of students' autonomous study in the practical component - Aims to achieve O2-4. M3: Active participation of the student in the teaching-learning process through the execution of a set of laboratory works - Aims to achieve O3-4.
Reading:
Harris, D. C. e Lucy C. A. Quantitative Chemical Analysis, 10ª ed., W. H. Freeman, 2019. ISBN: 978-1319164300. Christian, G. D., Dasgupta, P. K. e Schug, A. Analytical Chemistry, 7ª ed, Wiley, 2013. ISBN: 978-0470887578. Skoog D. A., West D. M., Holler, F. J. e Crouch S. R. Fundamentals of Analytical Chemistry, 9ª ed, Cengage Learning, 2013. ISBN: 978-0495558286. Skoog, D. A., West, D. M., Holler, F. J. e Crouch, S. R. Fundamentos de Química Analítica, Tradução da 9ª ed. norte-americana, Cengage Learning, 2014. ISBN: 978-8522116607.
Lecturer (* Responsible):
Adriana Pimenta (apimenta@ufp.edu.pt)