Unfortunately nobody can be told what a matrix is. You have to see it for yourself.
Пікірлер: 25
@kobedierckx2918 Жыл бұрын
Man, i had so much trouble understanding this now i get it. Thanks a lot! Seeing and hearing someone explain it is much better than reading about it in a textbook.
@rajmasani16873 жыл бұрын
You made it alot simple. thanks
@thgeamer86613 жыл бұрын
You are super useful. Finished Analytical Chem and going forward to a Lab tech position and this is perfect for giving me a refresher and thoroughly explaining the topic. An Amazing Chem teacher
@haydenhartranft15245 ай бұрын
You are a lifesaver and an excellent teacher, many thanks
@nvn16493 жыл бұрын
good explanation.. got to see more vid about calibration method from your channel
@ghostofplumbus3 жыл бұрын
Great job making a complicated subject simple! Thank you!
@Falco.2 ай бұрын
Thank you very much. Extremely helpful
@linaandersson6112 Жыл бұрын
Thank you!! You have literally saved me through my Analytical chem course so far, also love the memes
@TanyaradzwaRNcarah4 ай бұрын
"welcome to your first mountain stage 😅" Great video btw
@JespMusic3 жыл бұрын
Cool video. I recommend applying a high pass filter to the vocal audio. There is a low-frequency artifact that is causing a rumble in full-range speakers.
@melisdemirel5526 Жыл бұрын
Keep doing what you're doing. amazing
@chamomile36203 жыл бұрын
GREAT TEACHER. ♥️
@nguyentrieutrinh9335 Жыл бұрын
Thanks Alan. The question is the slope for standard solution may be not the same as the slope for the mix of standard+plasma. If they are different, this method may not be accurate. This will lead to your next video of Multi-point standard addition which I think can provide a more accurate result. Thanks heaps for both amazing videos explaining nicely the tricky issue.
@aiwissal4787 ай бұрын
saved my life
@kacmi62043 жыл бұрын
This guy is awesome
@pavansatyakrishnav37002 жыл бұрын
Why can’t I hear any sound in between 8:28 to 8:39
@alirezaahmadi89443 ай бұрын
Hi, for determination of K percentage in a fertilizer, I make calibration curve mixing standards and unknown. As 10 ml of unknown to all balloons and different amounts of standard, 1 balloon only has unknown without any standard. Why is that? Shouldn't the b from y=ax+b and signal of the balloon without standard be the same? If they are not what should I do? I'm confused, please help
@jonas23782 жыл бұрын
Love the Intro :-D
@zubariasalman Жыл бұрын
Hi, I am new to this topic and Thanks to you, I am learning a lot. Can you please explain what is the difference between Isotopic dilution method and internal standard method? Or these are same methods?
@alandoucette9997 Жыл бұрын
Isotonic dilution is a specific forn of internal standard. With mass spectrometry, we can distinguish molecules that are chemically identical, except that certain elements are isotope variations (eg Carbon 13, instead of Carbon 12). But internal standards do not need to be isotonic standards and can be employed with other detection methods. I do have a video on internal standards which shows the general process
@youssefbaajour61382 жыл бұрын
but how is S, the proportionality constant, the same for the two solutions? the matrix (plasma only or plasma with distilled water, so the slope of the calibration curve for the two is expected to be different.
@shortchemistry79272 жыл бұрын
Thank you for your question. In this example, I showed a "hypothetical" calibration curve made in distilled water, and another curve for those standards in plasma. In that case, the slope of the curve (S) would be different. However, this is not what we are actually plotting. In the standard addition experiment, we never generate a calibration curve in distilled water. What we do instead is combine the standard with the plasma. And we do this in such a way that the background solution is nearly constant (typically by adding a very small volume of the distilled water to the plasma). Therefore, since both samples (plasma alone; plasma + standard) are measured in a plasma matrix, each equation will have the same value for S, which therefore can be cancelled out. Sorry I didn't make that completely clear in the video!
@alirezaahmadi89443 ай бұрын
@@shortchemistry7927Hi, for determination of K percentage in a fertilizer, I make calibration curve mixing standards and unknown. As 10 ml of unknown to all balloons and different amounts of standard, 1 balloon only has unknown without any standard. Why is that? Shouldn't the b from y=ax+b and signal of the balloon without standard be the same? If they are not same what should I do? I'm confused, please help. I mean why we determine signal of balloon that doesn't have any standard added? The b must be same as it! If b and the signal of sample without any standard aren't same numbers what must be done?
@corradoblondi97923 жыл бұрын
nice thank you
@johnsmith-sp6yl2 жыл бұрын
yeah i can't watch this video, i'm schizoprenic and you're freaking me out too much dude.