Introduction to IR Spectroscopy: How to Read an Infrared Spectroscopy Graph
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In this video I will give you an introduction to infrared spectroscopy and explain what the graphs mean and how to interpret a spectroscopy graph. This is pitched at the level of A level and AS chemistry but can be used beyond that. I will show you how to interpret the peaks on the graph to work out what functional groups are present in a substance and explain the significance of the fingerprint region of an IR spectrum.
Link to Infrared spectroscopy correlation tablehttps://en.wikipedia.org/wiki/Infrared_spectroscopy_correlation_table
Microplastics Analysis of Sea Salt by FT-IR Mapping
In our first video, we analyzed the microplastics content of sea salt by FTIR imaging. This time we take a look at another very feasible approach in microplastics analysis: FTIR mapping.
Infrared micro spectroscopy a widespread technique that allows to detect and identify MP particles. Visit our website, where we discuss different approaches to MP analysis and compare them to find the best solution.
https://www.bruker.com/microplastics
Video on sample preparation and FPA imaging of microplastics:
https://www.youtube.com/watch?v=ottRhp6uwIM
More about LUMOS II:
https://www.bruker.com/products/infrarednearinfraredandramanspectroscopy/ftirroutinespectrometers/ftirmicroscopelumosii.html
More on FTIR imaging:
https://www.bruker.com/products/infrarednearinfraredandramanspectroscopy/ftirmicroscopesramanmicroscopes/ftirimaging.html
Fourier Transform IR spectroscopy (FTIR) – How it works?
What is FTIR and Michelson interferometer? It is one of the nondispersive IR technique which is more accurate and precise over conventional dispersive IR spectra. Here Fourier Transformation is a mathematical conversion of time domain into frequency domain.
ftir
interferometer
timedomain
Shimadzu IR Solution FTIR (spectroscopy) software
Shimadzu FTIR spectroscopy software
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VIDEOS ON CHEMISTRY TECHNIQUES IN THE LAB
UV Spectroscopy
https://www.youtube.com/watch?v=s5uIVQGFDE4
Thin Layer Chromatography
https://www.youtube.com/watch?v=iV1GfI_BbKE
In Situ Fourier Transform Infrared (FTIR) Spectroscopy – An Introduction – METTLER TOLEDO – en
Ok, so, why would I even bother with in situ Fourier Transform Infrared (FTIR) Spectroscopy? What will FTIR spectroscopy even do for me? Well, we’ve got a chemical reactor. And inside our reactor we’ve got a little reaction going on in here, and we just want to know what’s really is happening. We want to unlock the questions. For example, we might want to know, when does it end? We might even want to know; did it start? We might want to know, have I made what I thought I was making? https://www.mt.com/us/en/home/products/L1_AutochemProducts/ReactIR.html?GLO_YT_Autochem_OTH_Youtube_Autochem
And inside our chemistry here, there’s a couple of important things we might want to find out. The problem though is that traditionally to do that we need to take samples. So we need to find a way of getting reaction mixture out, so that we can deal with it and feed it to various analytical techniques. And it may be that our chemistry is very toxic, it may be under high temperature, it may be under pressure, and that’s not always a straightforward thing to be able to do.
There are a couple of different solutions and ways that we can be able to do this. METTLER TOLEDO EasySampler takes a sample, quenches at reaction conditions, and it helps you take that sample to Liquid Chromatography (LC), prepare it for Liquid Chromatography (LC) and of course from there you can get your LC results. EasySampler is obviously very useful but the downside there is that you have to wait for the Liquid Chromatrography (LC) results. https://www.mt.com/us/en/home/products/L1_AutochemProducts/EasySampler.html ?GLO_YT_Autochem_OTH_Youtube_Autochem
An alternative approach is to insert a ReactIR FTIR spectroscopy probe. And what ReactIR FTIR spectroscopy does in real time is it takes spectra as a function of time of the reaction chemistry itself. And quite simply you can peak profile these over a period of time because absorbance is proportion of the concentration, and you end up with a set of reaction profiles.
So, in this particular instance, as the reaction’s proceeding, you would get important questions answered. You would know in this instance: when does it start? When do my reactants begin to interact with each other? You would know when does the reaction stop? When do I have my final products? In actual fact you can even say in this instance my reaction maybe stops here and is therefore now’s my time to take a confirmation sample.
And the other thing we can do with ReactIR FTIR spectroscopy for example is we can tell, maybe there’s a reactive intermediate inside my chemistry, So the actual chemistry might even be going via some other species and that would actually help us figure out exactly what’s going on inside the chemistry.
So, in a very, very simple way, in real time, FTIR spectroscopy answers the key questions.
When does it start? When does it stop? What’s the mechanism? What to my kinetics look like?
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