Degree | Type | Year | Semester |
---|---|---|---|
2502444 Chemistry | OB | 3 | 2 |
Having studied or being currently enrolled in Spectroscopic Analysis Methods and Separation Techniques. Have passed the security test (virtual campus).
During practices, students must wear the approved lab coat and safety goggles. In addition to the usual tools to write, they should bring a scientific calculator, a laboratory book and a spatula.
The main objective of the subject is that the student reaches the competences indicated in the corresponding section.
The general objectives are:
1. Apply the fundamental laws and the theoretical principles acquired by the student in the courses of the subjects referenced in Prerequisites section.
2. To familiarize the student with the use of specific instrumentation, the acquisition of data in the laboratory and its interpretation, the introduction to the methods of analysis of data ...
3. To develop in the student a critical mentality that refers to the level of confidence of their measures, calculations and the interpretation of results.
The development of the contents will begin with a two-hour lecture. Here the content and methodology needed for the realization of the two blocks of this subject will be presented. There will be 12 laboratory sessions of 4 hours each, with the contents indicated below.
Spectroscopic methods (5/6 days)
- AAS (Atomic absorption spectroscopy). Determination of Cu in alcoholic beverages.
- AAS (Atomic emission spectroscopy). Determination of K in water.
- UV-Visible Spectrophotometry. Determination of Fe (II) in a vitamin complex.
- UV-Visible Spectrophotometry. Multicomponents Simultaneous determination of Co and Ni by formation of a colored complex with PAR.
- UV-Visible Spectrophotometry. Determination of the pKa of a synthetic indicator.
Chromatographic methods (6/7 days)
- Gas chromatography. Separation and identification of alcohol mixtures by GC-FID and / or GC-TCDy).
- Determination of the methanol content in a alcoholic beverage by gas chromatography (GC-FID) )
- Gas chromatography. Quantitative determination of pool water THM (SAF) by HS-GC-ECD (SAQ)
- Liquid chromatography. Computer simulation of a chromatographic process by HPLC.
- Liquid chromatography. Determination of caffeine in coffee beverages and / or cola by HPLC-UV-Vis.
- Liquid chromatography. Identification of sulfonamides in veterinary medicine by HPLC-UV-Vis
This subject consists of two parts distributed according to the methodology and the theoretical knowledge employed. Before beginning the laboratory sessions, there will be one session in the theory classroom about the rules that appear in this Teaching Guide, the latest information and the methodology and contents of the blogs.
Attendance at the classroom and in the laboratory is mandatory. An unjustified lack involves a zero of the practice. The students, in groups of 2 students, will perform 12 laboratory sessions of 4 hours, during which there will be 11 different practices. Students will previously have the scripts of the practices for their preparation. They must enter the laboratory with the script of the practice read and with the calculations that ask for the preparation of dissolutions raised from home.
Students must write in the laboratory booknote all the experimental results and the teacher's explanations. Once the practice is finished, and the material has been completed, students fill out and / or write the report of the practice (introduction and objectives, results and discussion, conclusions, bibliography and an annex showing the expressions amputated for evaluation of the uncertainties). All the results obtained in the laboratory must be presented in tables with the uncertainties and the corresponding units. The graphs must be presented with a title, the magnitudes represented, the corresponding units, the bars of uncertainties and the results of the adjustments if applicable.
In some cases, students will take the report home so they can do the calculations with more time.
Title | Hours | ECTS | Learning Outcomes |
---|---|---|---|
Type: Directed | |||
Development of the laboratory practices | 48 | 1.92 | 1, 4, 3, 2, 7, 6, 50, 51, 8, 9, 49, 53, 33, 26, 20, 22, 25, 18, 61, 17, 16, 48, 47, 46, 28, 5, 52, 29, 31, 35, 36, 32, 40, 39, 37, 41, 38, 10, 43, 42, 45, 13, 15, 14, 63, 62, 57, 60, 58, 59, 56, 11, 12 |
Lectures in a classroom | 1 | 0.04 | 8, 38, 43 |
Type: Autonomous | |||
Reading and study of guidelines, preparation of laboratory practices, writting of reports | 23 | 0.92 | 4, 3, 2, 7, 6, 27, 24, 21, 23, 22, 61, 30, 36, 44, 42, 19, 34, 54, 55 |
The evaluation process follows the principle of continuous evaluation. The overall score will be constituted by the weighted sum of 2 sections: laboratory (60%) and written exam (40%).
The laboratory score will consist mainly of the qualification of the reports, but may include, with different weights, other concepts such as: prelab tests (short written test to verify that the student has adequately prepared the practice that he/she is going to perform); laboratory notebook; behavior and attitude. The concepts to be evaluated and the corresponding weighting factors will be explained in the presentation of the laboratory. If a student obtains a score <3.5 in the laboratory, the subject will be considered "failed" and the score of the failed laboratory will be the global grade of the subject.
The score of the written exam must be equal to or higher than 4.0 in order to be taken into account in the calculation of the weighted average of the overall score of the subject. If this minimum score of 4.0 is not obtained, a recovery exam will be available. If the recovery does not reach 4.0, the subject will be considered “failed” and the grade of the subject will be the score of the failed exam.
To participate in the recovery, students must have been previously evaluated in a set of activities the weight of which equals a minimum of two thirds of the total grade of the subject and have reached a global grade equal or higher than 3.5.
In the case of non-compliance with safety regulations, a student may be expelled from the laboratory and suspend the practice of that day. In the case of serious or repetitive breach of safety regulations may be expulsion from the laboratory and suspend the subject.
Title | Weighting | Hours | ECTS | Learning Outcomes |
---|---|---|---|---|
Personal work | 10% | 0 | 0 | 1, 3, 2, 7, 6, 50, 51, 9, 49, 53, 33, 26, 27, 20, 24, 21, 22, 25, 18, 17, 16, 48, 47, 46, 28, 5, 52, 29, 30, 31, 35, 36, 32, 40, 39, 37, 41, 38, 10, 44, 43, 42, 45, 13, 15, 63, 62, 57, 60, 59, 56, 11, 12 |
Report of the results | 30% | 0 | 0 | 4, 2, 7, 24, 21, 23, 22, 37, 10, 44, 43, 42, 34, 58, 54, 55, 12 |
Results of the laboratory practice | 20% | 0 | 0 | 4, 3, 2, 7, 51, 27, 24, 21, 23, 22, 18, 17, 16, 29, 31, 36, 32, 37, 38, 10, 44, 43, 42, 45, 15, 14, 19, 57, 34, 60, 58, 54, 12 |
Written exam | 40% | 3 | 0.12 | 4, 2, 7, 8, 21, 23, 22, 25, 61, 36, 37, 44, 43, 42, 45, 19, 58 |
P.W. ATKINS.; J. DE PAULA; Atkins' Physical Chemistry. 9ª ed. Oxford University Press, 2009. (Traducción de la 8ª ed., Ed. Pananmericana, 2008)
J. Guiteras, R. Rubio, G. Fonrodona; Curso experimental de Química Analítica. Ed. Sintesis 2003.
D.A. Skoog, F.J.Holler, T.A. Nieman; Principios de Análisis Instrumental, 5ª ed Mc Graw Hil, 2001.
D.C.Harris, C.A. Lucy; Quantitative Chemical Analysis, 9th ed. Mac Millan Education, 2016.
J.N. Miller, J.C. Miller Statistics and Chemometrics for Analytical Chemistry 6th ed.