Building a gas chromatograph
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- Опубликовано: 13 окт 2024
- #gaschromatograph #homemade #arduino
Gas chromatography (GC) is a separation technique using gas flow through a column that separates compounds based on both volatility and interaction with the liquid stationary phase. Professional GCs are very expensive and not affordable for schools or amateur researchers. In the video, I will show you how to build a simple CG and a column that can be used to analyze LPG or other low molecular-weight alkanes.
Further sources of information:
www.aatis.de/c...
www.researchga...
www.researchga...
It's interesting how easy it is to build a GC. Thanks for the video.
Great Video! I saw a similar design many years ago somewhere on the internet. But your video was grear to watch! It would be interesting to see how far you could push a DIY GC with a longer column (maybe thinner and made from metal), nitrogen as a carrrier gas, other detector designs and maybe even an oven. But your approach to make it smaller and integrate it into a robot is great too!
Thank you. An oven is not hard to build, a heating element, a temperature sensor, a PID controller, and some isolation material. For the robot nose I plan to use a MiCS-6814 gas sensor, which has three fully independent sensing elements on one package.
Very cool idea.
Excellent! To improve resolution I suggest you use a much smaller ID column within the current tube (that you use as a heated air jacket). These 2 additions will significantly improve resolution. Very creative design!!
Yup thin ptfe tubing or silica tubing is used in most of them.
Thats a great idea! Like a Liebig condenser.
For miniature version you can use 1/8" PTFE tubing, there is a lot of adapters and connectors for these. Also you can consider making derivatized silica, for example C-18 one using octadecyl-dimethylchlorosilane (procedure is to dry silica first, and then reflux for 24h in toluene your ODS reagent, silica and some base (imidazol or TEA for example), filter, wash and dry).
Very good tips. Thank you.
Amazing content, so well structured and explained
This is soo cool. I'm studying analytical chemistry this term and learning things about GC. So fascinating to see you build one! I'm curious about your education background and works.
Thank you. I am an engineer and mathematician, chemistry is just a hobby. I am particularly interested in combining chemistry with other fields of science, for example microfluid systems and robotics. Good luck with your study:)
Gut und günstig! 😉
If you want to upgrade it to make an ion mobility spectrometer a very convenient ion source for a diy GC is a Am241 source from a smoke derector for positive ions or one of those gimmicky germ killer lights made for sanitizing cell phones.
Great tip. I used Am241 for my cloud chamber and Geiger counter project:)
Absolutely love the video, but can you add voice please to explain what you do, at the very least text to speech with ai is top notch now so you don't have to use your own voice and still sound great. Just google best open source TTS in RUclips.. Would really make us all happy!! 👍
Many people hate TTS in videos, but I am thinking to do a voice over in one of my next videos to see if people like my voice:)
AMAZING!!!
nice.
Great, thx!
Почему бы не поставить диод параллельно моторчику, и не перевести моторчик в режим неразрывного тока?
That all looked extremely simple, except for designing something in kicad :)
The good thing is it's an open source EDA. Once the schematics are drawn it's relativly easy to layout the board. But you can use any other EDA (fritzing is very easy to use). Mayby I publish all files as an open source project:)
Great!
Hello Marb's Lab. What is the problem with my comment? Why is it not being published? Was it wrong what I wrote?
I just checked it. I don't see your first comment and I didn't delete it. RUclips sometimes behaves weirdly.
@@Marbslab OK. sorry. Than I try it again.
Maybe there is a problem with hyperlinks...
@@measurementsfriend4887 Could be. You can email if it's important (but no homework questions😁).
now do liquid chromatography :)
I'm glad you didn't say I should build a mass spectrometer:p