In your element round up

Our ‘in your element’ feature is still alive and well, the articles are still freely available online, and the periodic table here is still being updated. Over the last few months a few more squares in that periodic table have been filled in with contributions from several authors.

In February, Anders Lenartsson from Chalmers University of Science and Technology argued that there are many reasons to disagree with one of his former professors, who said that “you’ll never impress me with zinc”.

Neatly continuing on the short-lived and entirely unintentional theme of ‘elements beginning with Z’, in March, John Emsley explained that zirconium has more wide-ranging applications than the use of its silicate, cubic zirconia, in fake gemstones.

In the April issue, Claude Piguet from the University of Geneva illuminated the convoluted history of erbium, and told us how it has carved out a niche for itself in photonics.

In the May issue, which came online a few days ago, Eric Ansoborlo from the French Alternative Energies and Atomic Energy Commission shared some interesting nuggets on polonium, including a health warning for smokers: polonium is not only extremely radiotoxic, but the small amounts that are found in nature are also known to accumulate in tobacco plants.

The articles themselves do not come with any such health warnings though, so do take a look at what other fascinating facts are contained within!

Blogroll: Inviting ire and iron

Editor’s note: As we continue to invite bloggers out there in the wild to compose our monthly Blogroll column, Tien Nguyen penned the May 2014 column.

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Flawed plastics testing and the chemistry of cranberries.

A toddler eyes the camera sternly while drinking from a sippy cup underneath the headline of a Mother Jones article that reads, ‘The Scary New Evidence on BPA-free Plastics’. Sounds alarming. But it turns out that the research is actually three years old, which John Spevacek at It’s the Rheo Thing points out, “hardly qualifies as new,” and further, that “none of this evidence qualifies as evidence”.

The original research tested plastics for oestrogenic activity after subjecting them to unrealistically abusive conditions. This included exposure to UV light with unnaturally high energy and using an autoclave instead of a dishwasher. A test they had to run, suggests Spevacek wryly, “since dishwashers aren’t available in the Austin, Texas area.” Scare journalism based on misinformation is all too common, but those of us paying attention are grateful when someone with Spevacek’s expertise takes the time to succinctly uncover faulty data.

Let’s talk about a substance we don’t have to be afraid of — cranberries. High-school senior Meera Mody writes about the chemistry of this fruit on What’s UR Rxn?, a group blog (Twitter feed here) run by students at Detroit County Day School who make personal everyday connections to chemistry topics.

Mody notes that cranberries were used hundreds of years ago by Native Americans to treat infections, and modern studies have explained their antibacterial activity. Mody writes that “the phenolic ingredients in cranberries largely give them their healthy reputation” because polyphenols can bind to and remove excess iron, which reduces cellular oxidative stress. With a knack for relating chemistry in a clear and engaging way, these self-identified ‘chemjournalists’ are ones to watch.

Written by Tien Nguyen, who blogs at https://mustlovescience.com.

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[As mentioned in this post, we’re posting the monthly blogroll column here on the Sceptical Chymist. This is the May 2014 article]

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