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Explainer: The science of alkyl nitrites aka poppers
Sep 16, 2021 · Inhaling alkyl nitrites feels like becoming instantly drunk according to some users, although the effect lasts for only a few minutes. Also known as poppers, these chemicals have been taken recreationally since the 1960s. Although they are sold openly, usually in small brown bottles with enticing brand names such as ‘liquid gold’, their ...
The scale of the problem of replacing ‘forever chemicals’ PFAS
Oct 10, 2024 · Some packaging contains PFAS to repel grease, for example fast food wrappers and pizza boxes. One study published last year found PFAS chemicals in single-use paper, cardboard and plant-based moulded fibre food containers from 17 countries across Africa, Asia, Europe, North America, Latin America and the Caribbean. The research team identified fluorotelomer alcohols, precursors of PFAS ...
One-electron covalent bond between two carbons pushes limits of …
Oct 4, 2024 · Scientists in Japan have made a groundbreaking discovery: they have identified a covalent bond between two carbon atoms that share only a single electron. ‘This [study was driven] by a curiosity to know where the limits of chemical bonds are,’ says Takuya Shimajiri at the University of Tokyo. Bulky aryl groups helped to stabilise the one ...
The Kuderna–Danish concentrator | Opinion | Chemistry World
Jan 7, 2021 · Persistent chattering. The Kuderna–Danish concentrator uses a Snyder fractionation column to condense residues of interest from a boiling solvent. In 1950, Kuderna and Danish began to develop a method to concentrate down …
Predictions for the 2024 chemistry prize highlight growing …
Sep 20, 2024 · With the 2024 chemistry Nobel prize just two weeks away, anticipation is reaching fever pitch among aficionados of the award. Analysts and online commentators have proposed a number of contenders for the prize, with favourites including molecular dynamics, clean energy and three-dimensional protein structure prediction.
The 2024 Nobel prize in chemistry as it happens – live
Oct 9, 2024 · 3.03pm Collection of papers celebrating the chemistry Nobel prize. The Royal Society of Chemistry has put together a collection of open access papers celebrating computational protein design and protein structure prediction, including four articles featuring David Baker’s work.This collection highlights work on protein design and analysis using computational methods, providing applications ...
Chemistry career options in sustainability
Nov 17, 2021 · O’Neil recommends the book, which outlines 12 principles of green chemistry, to anyone interested in sustainability. O’Neil also joined the Network of Early Career Sustainable Scientists and Engineers (Nesse). Early career researchers were ‘sharing what they knew about green chemistry, sustainable chemistry, anything in the sustainable ...
Noble metals dissolved without aqua regia - Chemistry World
Sep 1, 2020 · Noble metals dissolved without aqua regia. Scientists in Belgium have developed a simple and environmentally-benign method for recovering precious metals from metal wires and spent automotive catalysts. Using highly-concentrated aluminium nitrate and aluminium chloride solutions, they were able to dissolve both gold and platinum group metals ...
Is modern food lower in nutrients? | Feature | Chemistry World
Dec 5, 2023 · The increase in carbohydrates dilutes other grain components, including minerals. So although we see higher yields, the grains themselves are poorer in micronutrients: average concentrations of zinc, copper, iron and magnesium in the grain of the newer varieties were 19–28% lower than those of the older ones.