implementation of fluorescence spectroscopy as basic laboratory

46th Lunar and Planetary Science Conference (2015)
Fraile1, Department of Chemistry, Universidad Nacional de Colombia, Carrera 45 No 26-85, Bogotá D.C., Colombia, [email protected]
Introduction: Analitic Chemistry is a measurement
science that uses its concepts and techniques to be applied in the different knowledge areas to solve specific
troubles about qualitative and quantitative characterization of matter [1], for example the Planetary Science
area has a wide application of remote analysis thechniques like tools of study to the spacial bodies, including from an asteroid to a galaxy billions of light years,
allowing their general characterization with regard to
composition, temperature, density, preassure, among
others variable that can be defined thanks to these techniques.Although there are many analysis techniques,
now we are going to talk about spectroscopy techniques as instrumental techniques which study the interaction of the matter with the electromagnetic radiation.
As the boom of the spectroscopic analysis techniques is
not just in the Planetary Science but in another action
fields, which the needed for general people to understand and to acquire the basic concepts about the
daily phenomenon as these, although these techniques
seem complex and secializated are commons, they
involve frequent terms that we can find everyday in
media and scientist disclosure.Therefore it is proprose
the implementation of a laboratory practice focused to
the spectroscopy as a basic topic, which can contribute
with the globalization of knowledge planting estates in
high school and undergraduated education, to introduce
the topic, the fluorescence phenomenon and fluorescence spectroscopy are suggested to facilitate and to
attract the interest of the students because of the aspect
of the fluorescence offering a nice and awesome experience about science.
Chemical and instrumental analysis techniques:
Actually these techniques are so important in Planetary Science, because exist the needed to obtain data
about chemical, isotopic and mineralogical composition of surfaces and atmospheres, moreover it offers a
quantification of the distinct bodies, which are being
studied . When the spacecrafts and spaceships design are analyzed , we can see the major part of the
equipment and instruments that constitute it, it correspond to basic unit operations and techniques more
complex and specialized like gas chromatography and
different methods of spectroscopy, Although they
differ , allow to acquire essential data to build new
hypothesis and models, where the distance is not an
obstacle. The demand of knowledge that the population
have, is requiring greater academic depth training and
basic education to keep the step with science and technology, implementation to the techniques with a higher
level of complexity and technical basic lets you generate a very noticeable eductional impact and at the same
time generate greater public outreach and information
Spectroscopy: It is a chemical analysis technique
which because of to its versatility and wide range of
information that can be about a body in study, it has
became in absolutely essential technique today for
Planetary Science in all the studies which have been
doing now like all the studies will undertake in the
future. Because of its importance in different action
fields, it is also result essencial to the general community to adquire a basic knowledge about this technique.
So with the idea to propose to implement the spectroscopy as a basic laboratory technique and the need to
lead a dynamic teaching, the basic laboratory practice
about fluorescence spectroscopy is postulated.
Fluorescence spectroscopy: The fluorescence as an
emission process is a phenomenon so striking for the
aspect that the samples adquire when they are exposed
to radiation, like the emittion of light is of different
ways and with different wavelength according to the
chemical composition of the sample, we can observe
the distinct characteristics colors with the light radiated.[2] When we talk about education, is important to
find dynamic and atractive teaching methods to motivate the students, therefore the idea to propound a laboratory technique more complex than basic laboratory
techniques have to include any tactic to captivate the
interest of the students to understand the visual
phenomenon and the impact it has in the individual
after the experience.
46th Lunar and Planetary Science Conference (2015)
Laboratory guide: the guide will allow students of
high school and undergraduated to acquire the necessary concepts to develop the laboratory practice based
on fluorescence phenomenon and fluorescence spectroscopy as a general perpestive of spectroscopy techniques that are used nowadays and are very important.The guide is a source to help both, students and
teachers, before, during and after the practice is done.
Firsly the lab guide will have a theorical frame that will
allow students to know the basic concepts about the
technique, then, it will indicate the materials, equipments, requirements,cautions, procedures and, at the
end, it will offer a questionary to evaluate students
knowledge and will provide a guide to do analysis of
fluorescence phenomenon and fluorescence spectroscopy meansof calculations and observations made by
each one of the students during the session. Four minerals are suggested with different emissions of
flurescence like the samples to used in practice, it provides at the same time, a vision about the use of this
techniqueon the branch of Geochemistry an Planetary
Educational impact and public outreach: implementation of a laboratory practice addressing the fluorescence topic and fluorescence spectroscopy have like
objetive to introduce and to offer to the students of
high school an undergraduated education to a so frequent and used technique today in the different áreas
as Planetary Science, where this and another methods
of spectroscopy ares used to a remote analysis of spacial bodies to indentify and quantify chemical and mineralogical species, besides to determinate structures of
the samples or bodies studied.The main idea consist in
the practice to provide a general perspective of the
topic and its characteristics, allowing to meet the application in Planetary Science and generating the descentralizatetion of scientist knowledge to achieve the
scientist disclosure has a major outreach inseide the
society without any limitation.
Conclusions: To propose a laboratory practice about
fluorescence phenomenon and fluorescence spectroscopy in the área to the Basic Chemistry in high school
and undergraduate educación are based on to offer to
the students a general perspective about the different
spectroscopy techniques which are used often in Planetary Science to indentify chemical, isotopic and mineralogical composition, besides of to quantify it. So it
allows to descentralizate the knowledge and to increase the public outreach of the scientist disclosure. At the
university the group of Planetary Science TITAN is
working so hard to implement the spectroscopy technique as a basic laboratory practice to undergraduate
students because we know the importance that the
chemical and instrumental analysis techniques have
into the Panertary Science and Geoscience, and also we
are working in the scientist disclosure wih some projects focused to the acknowledgment the Planetary
Science in our country Colombia.
[1] Skoog D., West D., Holler F., Crouch S.
(2005) Fundamentos de Quimica Analitica 8 ed, 27,
[2] Skoog D., West D., Holler F., Crouch S. (2005)
Fundamentos de Quimica Analitica 8 ed, 27, 837- 843.