#Analytical Chemistry

[mindblowingscience]

A team of materials scientists and engineers at ETH Zurich has developed a light-triggered chemical process for breaking down certain polymers into their constituent monomers. The paper is published in the journal Science. In recent years, scientists have become aware of new problems associated with the mass production of polymers—microplastics can now be found on every part of the Earth, including inside virtually every person on the planet. Part of the problem is the difficulty and expense involved in recycling plastics, which makes it easier to throw them in the trash or the ocean.

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[scorchrend]

[polycyclic-aromatic-homocarbon]

I hate that analytical chemistry is called that how I am supposed to take an article seriously that’s published in a journal called Anal. Chem.

[crisis-vision]

Learning about Kendrick mass defect plots 🤍

It feels good learning about things that directly apply to my research 🔬

[6626e-34]

Sigh, I’ve been trying to study all week but lately the work I’ve been doing for my research lab has been going nowhere and it’s left me unmotivated…I went on a walk

[asquirrelinspace]

Artist's rendition of my experience in analytical chem

[shouyurramen]

A very slow day 🫠

studying anachem makes me wanna cry, can my mum just pick me up cmao ~

[tajgernewdemon]

[studychemistrytopics]

Bromocresol green (BCG) is a dye that is used in chemistry and analytical chemistry as a pH indicator in acid-base titration and in thin-layer chromatography staining solutions to visualize acidic compounds. Generally, the indicator can be prepared by dissolving BCG in an ethanol solution.

[tenth-sentence]

And analysis is by no means straightforward.

"Environmental Chemistry: A Global Perspective", 4e - Gary W. VanLoon & Stephen J. Duffy

[mindblowingscience]

The continuing release of carbon dioxide into the atmosphere is a major driver of global warming and climate change with increased extreme weather events. Researchers at Johannes Gutenberg University Mainz (JGU) have now presented a method for effectively converting carbon dioxide into ethanol, which is then available as a sustainable raw material for chemical applications. "We can remove the greenhouse gas CO₂ from the environment and reintroduce it into a sustainable carbon cycle," explained Professor Carsten Streb from the JGU Department of Chemistry. His research group has shown how carbon dioxide can be converted to ethanol by means of electrocatalysis.

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[wemahesh]

Parts per million (ppm) is a way of expressing very dilute concentrations of substances

Parts per million (ppm) is a way of expressing very dilute concentrations of substances. To calculate ppm, you can use the following formulas depending on what information you have. Mass base example   volume base calculation   Practical Notes For dilute aqueous solutions, 1 ppm is roughly equal to 1 mg/L. For gaseous mixtures, 1 ppm is often taken as 1 µL of gas per liter of air. Summary PPM…

[polycyclic-aromatic-homocarbon]

Spending nearly 5 hours on an assignment worth only 2% of a mark normally doesn’t feel great but my grad student mentors said that my rough draft exceeded their expectations and they had no big comments on the final draft and that’s worth soooo much more to my ego than 5 hours teehee.

[regexkind]

Is there a good way to get access to a mass spectrometer as an amateur chemist? I want to synthesize e.g. aspirin and verify the purity

(I understand that this is not the same as it being safe to take if the mass spectrometer only shows peaks corresponding to the product. I'd still be curious)

[chemistry2024]

Chemistry’s Chameleon: The Self-Repairing Marvels of Chemical Gardens

Chemists have been enamoured with the vibrantly coloured, coral-like structures that develop when combining metal salts in a tiny vial since the mid-1600s.

To date, scientists have been unable to simulate the functioning of these ostensibly straightforward tubular structures, known as chemical gardens, or the patterns and laws that control their development. Oliver Steinbock, an associate professor of chemistry and biochemistry at FSU, described it as "very interesting in a materials context." They don't develop as crystals do. A crystal grows and has lovely, pointed corners.

Chemical gardens typically develop when metal salt particles are added to a silicate solution. A semipermeable membrane that erupts upward in the solution as a result of the dissolving salt's reaction with the solution gives the structure, which resembles coral in appearance, a biological appearance.

The chemistry is associated with the development of hydrothermal vents as well as the corrosion of steel surfaces, where insoluble tubes can develop. The researchers were able to simulate a variety of distinct shape patterns, some of which resembled flowers, hair, spirals, and worms thanks to the constriction between two layers.

The designs could be made up of self-extending filaments, loose particles, or folded membranes, for instance.  The self-healing properties of the material were also shown by the model, which supported observations that fresh membranes expand in response to microbreaches.

[chasingrosesandbooks]

I'm afraid to ask what's going on page 157