The Nobel Prize in Chemistry 2022 has been awarded to Barry Sharpless and Morten Meldal for laying the foundations of click chemistry, which quickly and efficiently joins molecular building blocks; and to Carolyn Bertozzi, who pioneered bioorthogonal reactions, which use this technique inside living organisms without altering the chemistry of the cell.
Researchers have analysed the presence of perfluoroalkyl and polyfluoroalkyl substances (PFASs) in 72 textile products purchased online in the US and Canada in 2020 and 2021. The results, published in the journal Environmental Science and Technology Letters, show high concentrations in school uniforms and higher concentrations in 100 % cotton as opposed to synthetics.
Although gold is chemically inert, i.e. it resists discolouration and corrosion, its alloys are less resistant. This type of metal in the form of gold leaf is present in the Alhambra in Granada. Two researchers from the University of Granada analyse in the journal Science Advances what causes this corrosion and why purple-coloured nanospheres have appeared.
An international team led by researchers at the University of Copenhagen has detected a new class of extremely reactive chemical compounds in tha atmpsphere, the 'trioxides'. The challenge now is to understand the role of trioxides in climate and air quality. The result is presented in Science.
A review of studies in rodents and humans examines the relationship between exposure to perfluoroalkyl substances (PFAS) and liver damage.