Feb 25, 2022
Mmmmm pretty colors from my paper and thin layer chromatography (this are water based markers because I was a coward)
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Mmmmm pretty colors from my paper and thin layer chromatography (this are water based markers because I was a coward)
Chromatography
Chromatography is a physical process of separation in which the components to be separated are distributed between two phases; one phase is stationary phase while the other is the mobile phase moves through it in a definite direction.
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Using SCIENCE to determine the correct colour for Klavier Gavin's jacket.
...or the right compound to throw over him when he's being a glimmerous fop?
20. August 2018 / Update
I finally started on the flash cards for chemistry! I decided on a colour code for the methods of filtration and separation, prepared a couple of small flash cards, and finished two completely. That means I completed the list of my goals for today! :D Only need to get a snack and have another glass of water, then it’s perfect~
...And it’s not 4AM for once! What’s going on? XD I can actually go to bed early today without feeling guilty, hooray!! Even though I have to learn to adjust my study goals and plans for a day. I’m still getting used to writing that down (and then actually following through with it), so I usually throw everything on the paper I can think of, and it’s just waaaay too much to do in one day. But! I’m at the same time quite motivated, because 1) I met my goals for today, 2) I can go to bed early, 3) as a result of 2) I’ll be able to get up early tomorrow!, 4) I managed to power through focus troubles and a period of zero motivation and “I just wanna sleeeeep”. That means I can do it again whenever I next need to, which means my mind and my willpower/discipline are making good progress!! :D
Ink Examinations
Examining inked writing in conjunction with other techniques (e.g., handwriting analysis, watermark identification) can provide details regarding document preparation. The composition of writing inks varies with the type of writing instrument (e.g., ballpoint pen, fountain pen, porous-tip pen) and the date of the ink manufacture. In general, inks are composed of dyes in solvents and other materials that impart selected characteristics. Ink analysis usually is limited to comparisons of the organic dye components. When ink formulations are the same, it is not possible to determine whether the ink originated from the same source to the exclusion of others. Examinations cannot determine how long ink has been on a document.
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Pakistan is an agricultural country and agriculture sector contributes approximately 35-40% to the national income. The Punjab is leading in the production of wheat. Wheat is more susceptible to infestation of different kinds of Fungi. Mycotoxins are perilous toxic metabolites fabricated abundantly by such Fungi. For a prolonged period of time, mycotoxins are familiar to attribute grievous diseases in mankind and animals. For this purpose, wheat flour was purchased from local markets and flour mills of different areas in the Punjab. A total of 108 whole wheat flour samples were collected and analyzed (73 samples from markets and 35 samples from flour mills) for aflatoxin, ash and moisture contents. The overall moisture of wheat flour sampled collected from flour mills of Punjab were in the range of 8.315% to 13.937% and from markets the values were in the range 10.302% to 13.803%.The overall ash content of wheat flour samples from flour mills were in the range of 0.618% to 0.983% and for market samples the values were 0.547% to 1.100%. All of the samples were analyzed and found negative for aflatoxin level in whole wheat flour. Results indicated that moisture content (%) in entire the flour samples were below 14%. Investigation of aflatoxin revealed that AFs (AFB1, AFG2, AFB2 and AFG1) were not established within detectable limits of Thin Layer Chromatography i.e. for B1 and G1 detectable limit is ≥0.72ppb while for B2, G2 is ≥0.20 ppb. However, aflatoxin was not be detected by thin layer chromatography, so for more reliable results, sophisticated techniques such as HPLC need to be used to determine aflatoxin in wheat flour samples.
Hmm. Need more polar eluent