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.
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.
that was really great actually
leonie21fly 3 days ago
420, thank you. il now pass my midterm
curtis0714 1 week ago
very clear explanation.. Thank you very much
aldehlawi 2 weeks ago
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.
SkaterMK99 3 weeks ago
Great video!! Thanks :)
shikinhlmzf 1 month ago
very nice and thanks
123ankitsaxena 1 month ago
thank you! finally
yardconnec1 2 months ago
Awesome video! Hope it helps me with my interview for a placement tomorrow!
msmcgregor 2 months ago
this may be a horribly stupid question... but what solution is the capillary tube in? for storage i assume?
gortaithe 3 months ago
anyone else got an AAS tomorrow? xD
plzcallmebabe 3 months ago
very helpful, thank you!
asianseyesRpretty2 4 months ago
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.
HariElayath 5 months ago
hey Katherine, you sound Aussie!! Great explanation - used it in Yr 12 HSC Chem today. Thx heaps
SodiumMan 6 months ago
great discription, thx:)
Na5iR1 7 months ago