How the AAS works 

12 years later and it's still educative. Thanks alot

Nice video, However the atoms of intrest in the flame will absorb light from the hollow cathode tube, this will decrease the amout of light going to the photo multiplier. The decrease in light detection reguarding the sample compared to the amount of light detected with just the hollow cathode tube is converted to a measurable amount of absorption.

Very Good! But the student made an error while explaining the absorption of the lamp's light. That was actually the emission not the Absorption.

Simple yet very informative! Easy to understand. Kudos!

Wow thankyou Katherine. It's always better to see them than to read more.

good prep for my AAS lab practical tomorrow, thanks.

Absolutely incredible! So eloquently explained! Definitely an enormous thumps up!!!

Great video. Step by step makes it simple to understand what's going on.

thank you very much, put together some terms i'm reading right now that i have no time to piece together for my course. Beautiful explanation for basic mechanics. Thank you!

That was one nice tutorial for AAS.. Thanks Katherine..

You're a life saver Katherine!

Oh thank you so much. I was having a hard time visualising it and my textbook wasn't helping much

Very nice, clear, and concise information! Thank you!

Wow, the student's explaination is very clear, I was a student studying chemical engineering.My professional classes has this machine.

Thanks for the explanation. This was very well done.

Thanks so much for making this video. Very good and clear explanation :)

Thank you so much!!! Seeing it in real form is much better than animation form...👌🏻👌🏻👌🏻

Wonderful explanation , very helpful!

wow you made it so easy to understand. Thanks a lot and be blessed.

Great explanation, Thank you so much!

Thank you so much! For me it was impossible to figure out by just reading about it!

Thank you for your tutorial on the AAS

Excellent video and explanation

Cheers Katherine!!!

wow this was cool! thank you so much for explaining! helps me so much while studying for finals in Analytical chemistry 2 ! :))

really good informative video.

thanks for the video, it really helped.

Thank you so much, your explanations really helped me :DDD

Fantastic! Thank you!

this is really really great, thanks!! 🌹🌹

Nice explanation!

very clear explanation.. Thank you very much

Informative one.. thank you

This help a lot thank you for making this video :)

wow this is a great vid! thanks for making

Fantastic :) I will use this for my project thanks :)

Very nice informative video

well done Katherine!

very helpful, thank you!

Great stuff apart from a little bit of confusion at 3:00 min - 3:15 min of the video. Photons from Mg emission in the flame are of no relevance to the analysis. This has been observed by a couple of commentators on this video. The student in the video could have explained better in terms of modulated transmitted (unabsorbed) radiation from the hollow cathode lamp versus unmodulated emissions from excited Mg atoms in the atomiser, other excited atoms, plus radiation from the atomiser itself. A supporting mention about the inverse relationship of absorbance and transmittance (Beer's Law) and role of the log amplifier would probably have completed the video perfectly.

Atomic Absorption Spectrophotometry (AAS) this video is very useful

great job katherine^^

Nice explanation

Hi thks for the video! Considering the fact that each element absorbs a very specific wavelength, from each cathode lamp, it means you don't need to use a standard?

Good theoritical explanation. Can you elaborate more on trouble shooting such as instrumental error?

i wish she took out the nebuliser and showed exactly its working,,i was an engineers for aas..

hey Katherine, you sound Aussie!! Great explanation - used it in Yr 12 HSC Chem today. Thx heaps

Does the output display on a readout or in the form of a printout or is it connected to some software package?

Great video!! Thanks :)

its really helpful

Nice presentation indeed please add something about Vapor and furnace use.

that was really great actually

Finally a video with 0 dislikes haha great explanation! thank you

Thank you!

good job!

GyroGerald Thank you so much!!.. i was pulling my hair out thinking how the absorption was detected if the light emitted was the same was the same wavelength as what was coming out of the HCL absolutely no-one explains that properly..

thank youuuuuu . really helpfull

Thank you, you should come to teach us at our college :)

thank you so much, i was looking for such videos . But now i could not take my eye off the video . To me you are the most beutiful chemist in the world. Starting from the day i download the video , i watch it at least twice a day simply to see you dear! please please please contact me. Waiting for your response!

Is it possible to analyse Boron and Zinc with AAS?

thanks a lot!!

That's the same spectrometer I used during my training... That thing is really expensive.

very nice and thanks

Thanks!

420 blazzzze it lad, but seriously thanks

thank you it was helpful can you u upload more explanations of analatical technques such fluid chromotograpphy and voltametry

Brilliant

Anyways thanks for this AAS video.

Thanks Mam. Please tell about more about AAS and how to operate software

Oh I enjoy this

thank you

Who invented the method for detecting elements with light, that sounds like crazy sci-fi tech

if the compounds are broken down , they become ions right? Then what is being exited that goes back to ground state to be detected by the eqpt?

sick!!

THANKYOU

Please suggest me how to calibrate atomic absorption spectrophotometer for chromium metal.

Aloha Have you worked on Varian 820 ICP MS?

Other three lamps are used for which elements?

I thought that the AAS measures the decrease of light after its part was consumed to promote electrons not the light emited by atoms returning to their ground state

This is gold! :D

what about the monochromator?

blaze it

You are so smart

i thought the detector was measuring the absence of light ie. the electrons absorb light, release it (in all directions) while returning to ground state and therefore there is less light reaching the detector.

This information about AAS is helpful, but you did not mention about other metals cathode lamp for Cu, Zn, Fe, Cr, Ni, and Co, How we take the data if possible please try to explain this as well, Thank you

Super

Hey you got that explanation of the process all wrong! Extra light is Absorbance? I thought it was the other way around! Actually free state atoms created by the flame do absorb photons at the characteristic wavelengths (specific for the element under study) emitted by the lamps. However this causes a drop in intensity reaching the detector (compared to an unaffected "Reference" beam) and the drop in intensity is converted mathematically into an Absorbance value, proportional to concentration.

Can anybody tell me that, is it necessary for cathode to be made of the metal which is in the solution? If yes then why?

Can any one explain me how to Cr(VI) trace in flame AAS

Olá tudo bem, você pode me dizer onde comprar Absorção Atômica Spectrometer AAS (Varian ) ? alguém disse que a Austrália seria mais em conta , é verdade ? menos pagar esta unidade. Hello all right, you can tell me where to buy Atomic Absorption Spectrometer AAS (Varian ) ? someone said Australia would be more into account , it is true ? less pay this unit

this is very good real vi.deo

Thanks for the explanation...makes the whole lots easier to understand. You know what, you are kinda of cute haha

This is emission..

The video length is 4:20

Oh

this may be a horribly stupid question... but what solution is the capillary tube in? for storage i assume?

Ah yes, rectify as soon as possible. Asap. Yup.

Auto CC was having a bad day

cost? 😂

Is this not atomic emission?