Mass Spectrometry
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- เผยแพร่เมื่อ 7 ส.ค. 2013
- 009 - Mass Spectrometry
In this video Paul Andersen explains how a spectrometer was used to identify the presence of isotopes. This modified Dalton's original atomic theory because atoms of the same element had different masses. The functional parts of a mass spectrometer are detailed including the ionizer, mass analyzer and the detector. A simulation of Chlorine isotopes along with an average atomic mass calculation is included.
Music Attribution
Title: String Theory
Artist: Herman Jolly
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"File:John Dalton by Charles Turner.jpg." Wikipedia, the Free Encyclopedia. Accessed August 2, 2013. en.wikipedia.org/wiki/File:Joh....
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"File:Peptide-Figure-Revised.png." Wikipedia, the Free Encyclopedia. Accessed August 5, 2013. en.wikipedia.org/wiki/File:Pe....
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Wow, you've taken something that I assume is incredibly complex, explained it in 8 minutes and I actually understood it.
And I sucked at chemistry.
+bullsquid42
Don't forget to find a way to test your knowledge and check your understanding, even if you don't like school.
Science isn't hard. It, like math, depends on the educator. Most educators suck. Especially people who call themselves 'science communicators' (see: twenty something 'camera ready' girls who are barely undergrad's on buzzfeed like channels who wear t-shirts that read 'i fucking love science' or something along those lines. They're as negligent as the old uppity teacher who thought the class was hopeless and didn't try, because unlike them they assume the entire class is mentally retarded and needs babyspeak.) People like this guy just explain shit the way it is, and if things are explained in a straight forward way there's no reason to not understand them!
He is what we call an actual teacher.
fr! my chem class online never explained this
You are such a thorough teacher and what you do for thousands or even millions of students is absolutely amazing. Thank you for all your efforts!
Aakriti Ramayani 'Yeah you are right.'
Bozeman Science and KhanAcademy are pure blessing. Thank you guys!
The analogy with the car/motorcycle making a turn was brilliant. Thank you!
Thanks, I use this video in my lecture on atomic mass. I like that you showed the calibration of the machine, the whole process makes more sense when you see what can go wrong with analyzing a sample.
Thank you so much! This was wonderful. I'm writing a paper on identifying biomarkers for pancreatic cancer and specifically researching apolipoprotein A. Thanks so much for going step by step for me to better understand the MS process!
is this a type of biosensor?
I wish I had that kind of teacher in university :) Simple and interesting explanation of method sometimes difficult to understand .
Thank you so much Mr. Andersen!! You are seriously the best. I needed to understand this for my MCAT review and just could not wrap my head around my Kaplan book or AAMC explanations. However, your explanation finally made sense to me. Thank you again, from the bottom of my heart.
wow man you deserve to call you a doctor in your field !
a real person who understand the whole concept and explained it very simple you're not a teacher you're from my point of view a learner
Every other video totally confused me with its complexity, but this one totally cleared it all up! Thank you!
what a superb explanation this was, some of these videos are a work of art from an educational standpoint
Thank you so much for this great video! You're great at teaching and I love the fluency in the video and how you explain things. Thanks once again x
Sir., you saved me time with this incredible explanation!
Thank you
Easily the best intoduction to the topic on youtube
Best video on mass spectrometry i've found. Thanks so much!
Great teacher! Clear, precise and I am SO grateful!
Can he be my chemistry teacher please?
cheers for the upload, always helpful
Incredibly helpful! Thank you.
I can't believe this doesn't cost money! THANKYOU!!!
You are a god sent. Thank you very much for helping us out. You do really have a great talent in teaching and presenting. So thank you for not keeping it to yourself.
Eleni
An excellent,brief explanation in mass spectometry!
Thank you for all your efforts!
Great video! I've been going through the series to prepare for a chem test tomorrow, I really like how you explain stuff! Though, for Dalton's theory, wouldn't there also be differences in the size of elements due to differences in ionic radii?
Really helpful. If you could add more types of ionization that would be absolutely perfect. :)
Thanks to your lectures I have made 3 subjects (two semesters of biochemistry and one semester of molecular biology) :)
GOAT Science youtuber along with crash course
Awesome and simple explanation. Thank you for making this.
Oh thx i am 13 yrs old and i decided to learn about mass spectrometry and it really helps me. Thanks again
Yes, that was very Helpful. Thank you for making these videos!
This is so HELPFUL thank you very much !!
This was perfect! Thank you so much!!
this explanation was awesome. thank you for sharing!!
Great video! Greatly improved my geochronology presentation :)
Is it only the strength of the electromagnet that is varied to calibrate the device, or can the strength of the electric field also be varied?
Thank you so much for the brief explanation! Helps for sure.
Undeniably the greatest of all time Mr. A.
U r a superb teacher........ Doing a great job sir
Such a simple and understandable explanations ! Thank you !!! :)
Thank you so much from 2016
Explained thoroughly. Thank you!
Very clear & concise. Thank you!
I liked this video. Thanks for helping us understand a little better about this.
Thanks
Simply put. Very helpful thanks
I would like more detail about the data analysis for the determination of concentrations of components of a mixture that are exiting a chromatograph. Further discussion on different types of ionization, types of mass analyzers, and finally types of detectors would also interest me.
Your videos are super helpful, thank you!
I couldn't find this explanation in my book so thought Mr Anderson there... who needs the book.. easily explained
thank you so much for your help! Great explanation, everything make sense now
Thank you:) Best teacher I found for this.
This video is brilliant - thank you!
This video is awesome!, thanks for sharing.
I love you! This is clear!!!! Finally!
Outstanding presentation thank you.
This was so helpful! Thank you! :)
Dear Mrs Anderson, would you explain (detailed..:)) how you analyze the single amino acid in the peptide?
Very helpful !! thank you very much
Cheers boss man, couldn’t have done it with out you 🙏🏼🙏🏼🙏🏼
Always helpful .
Great and very clearing concept....... i see ever......... thanks
Thank you so much sir.This is really helpful
Thank you so much Sir! This is so helpful
Absolutely fantastic! lets hope this helps me pass my exam
yes,it's really helpful for me in studies.Thank you very much.
excellent explanation!
fantastic truly helped me with my homework!!!!
This was super usefull, and i thank you mister!!! I just have 1 question, you said after the magnet curve there is a detector with electron multiplier, but we are only sending Ions down the curve... so does the multiplier, multiply Ions too in order to read/show the peaks?
Very helpful. Thank you!
this video learn me a lot.
thank you so much
extremely helpful
appreciate your efforts
Helpen me a lot! Thanks
Amazing ! May I know what problems faced when mass spectroscopy is used with HPLC system ?
thx men you made my day .
I actually understood what you said AND how to get the atomic weight, every other time I felt like I was reading Arabic. LOL. Now I understand it. THANK YOU!!
Thank you so much sir you have really helped me to sustain my job 😘
Great explanation..thanx man
THANK U SOO MUCH SIR.... THAT WAS SOO HELPFUL
Great Job, Where did you find the simulator for the mass spec?... any chance for a link?
thank you, I appreciate, your biology and chemistry videos a LOT...
bless you, i have finally understood how this thing works :'))
Super helpful Thank you!
Thank you ( from Brasil)
Very nice. God Bless you for your teaching. I got a question.So how the abundance was calculated? It has to be in the formula. So what is the way to calculating that. Thanks
+rustyjeanz Abundance is just the fraction of that specific isotope from all atoms of that element.
So say you have 10 atoms of Chlorine. Of these 10 Chlorine atoms, 7 of them have atomic weight of 35, and 3 of them have atomic weight of 37.
So the abundance of Chlorine 35 is just # of Chlorine 35/ All Chlorine, which is 7/10 = 0.7, which is your abundance.
For Chlorine 37, the abundance is 3/10 = 0.3
Notice the abundance is essentially just the chance of getting that type of atom. You have 0.7, or 70% chance to get Chlorine 35, and 0.3 or 30%, to get Chlorine 37.
Percent chance * Weight + Percent chance * Weight is what is called the Expected Value in statistics, which gives the average value of a Chlorine atom.
I needed that video!!!!!!!!!!
Sir, you are amazing!!!
Thanks, helping me get ready for a-chem test
I would also like to know how to read a mass spectrum and how to identify various peaks.
Thank you! I understand it very well :)
thank you very much! that was very clear
Nice videos you make, sir. Hope to see organic chemistry some day.
What about when you're trying to identify let's say, 5 different medicines in 1 sample? How do u separate them & identify each 1 separately (plus amount taken) & how often do false positives appear? Especially when multiple meds are involved in 1 sample? Please I need help with this.
amazing video, but I have a question, what made the heavy isotopes above the lighter isotpes on the detector screen ?
Usually the number of protons and neutrons is similar, and the less abundant isotopes are often “heavy”, i.e., they have an extra neutron or two.
amazing video! how do we get in touch with suggestions and thoughts?
You can always contact me through my website. www.bozemanscience.com
+Bozeman Science
I have a suggestion. Don't listen to suggestions and keep making amazing videos, or whatever you like. You know the stuff, and you are doing a great job ! (:
Thanks !
It helps a lot !
Very helpful.
Thank you so much...greetings from Oaxaca, México.
Yes, that was very helpful :)
Thanks Boz❤
Thanks a lot for all the explanations! I have a single question: all of my textbooks seem to specify that the sample has to be in a gaseous or vapour state - can it actually be in solid and liquid states, as well?
the solid or liquid samples must be vaporized in order to go in the mass spectrometer, so yes liquid and solid samples are acceptable as long as they are in the gaseous state.
0:28 John Dalton is Paul Anderson?
I love your videos