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Hans Peter Arp @hanspeterarp.bsky.social · Jul 30

🌍 Mapping the chemical complexity of plastics - published in Nature Magazine!

As countries negotiate a global treaty to address the plastic pollution crisis, in this new study we identify thousands of chemicals in plastics - many harmful and largely unregulated.

www.nature.com/articles/s41...

Mapping the chemical complexity of plastics - Nature

An inventory of 16,325 known plastic chemicals, including >4,200 hazardous compounds, supports the development of safer plastics.

www.nature.com

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Hans Peter Arp @hanspeterarp.bsky.social · Jul 9

Mapping the chemical complexity of Plastics - now published in @nature.com! This we hope will be used as a launch pad to make plastics and materials more safer and circular!

Mⓐrtin Wⓐgner @martiwag.bsky.social · Jul 9

Over the past few years, our PlastChem team has worked tirelessly to map the chemical complexity of #plastics. Today, we publish the findings in @nature.com. We hope this evidence propels the development of safer plastics to protect human health and environment. 1/4
www.nature.com/articles/s41...

Mapping the chemical complexity of plastics - Nature

An inventory of 16,325 known plastic chemicals, including >4,200 hazardous compounds, supports the development of safer plastics.

www.nature.com

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Hans Peter Arp @hanspeterarp.bsky.social · Jul 7

Breaking #TFA news: The Danish Ministry of the Environment is withdrawing the approval of 23 #pesticides because the products contain active ingredients that can form and leach #TFA into groundwater. This is the first country to ban #PFAS pesticides.

Press release (Danish):
mst.dk/nyheder/2025...

Tractor applying pesticide to a barren field. Photo by Bence Balla-Schottner on Unsplash

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Hans Peter Arp @hanspeterarp.bsky.social · Jun 26

🧪💶Ambitious chemical regulations boosts the economy.

A The European Parliamentary Research Service report warns, however, chemical policy needs a strong #REACH and #PFAS strategy to get the best cost-benefit outcome and save the most lives.

Full report:
www.europarl.europa.eu/thinktank/en...

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Hans Peter Arp @hanspeterarp.bsky.social · Jun 22

Why do Kubrick movies continuously feel ahead of their time?

a black and white photo of a man flying in the air with his hat in the air .

ALT: a black and white photo of a man flying in the air with his hat in the air .

media.tenor.com

Hans Peter Arp @hanspeterarp.bsky.social · Jun 8

Big updates this month to the ZeroPM Regulatory watch - on updates to #PFAS and #PMT substances in the EU

Highlights:
- PFAS in the Soil Monitoring Law
- PFAS in the Water Resilience Strategy
- @echa.europa.eu launches consultation for #TFA as PMT, vPvM and Reprotox 1b

zeropm.eu/regulatory-w...

ZeroPM Regulatory Watch - ZeroPM

As the EU Green Deal roles out, ZeroPM's regulatory watch will announce upcoming initiatives related to persistent and mobile substances.

zeropm.eu

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Reposted by Hans Peter Arp

CHEM Trust @chemtrust.bsky.social · Jun 8

‼️ @global2000.bsky.social have tested cereal products in Austria for TFA, finding all products to be highly contaminated.

😥TFA is a type of #PFAS and is currently under consideration for hazardous classifications such as toxic to reproduction.

More in our #ToxicFree4EU briefing: buff.ly/0b9IKLC

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Hans Peter Arp @hanspeterarp.bsky.social · Jun 5

In this lysimeter study we studied the impact of using biochars to reduce mobility of PFAS in soil. Over 100 years, nearly all PFOS are predicted to leach from no-sorbent lysimeters, while < 1 % will leach from soil treated with sewage sludge- derived biochar.

www.sciencedirect.com/science/arti...

Measurement and modelling of sorbent-amendment impacts on seasonal and long-term PFAS transport through unsaturated soil lysimeters

This study investigated the effectiveness of waste-derived biochar amendments and commercial sorbents in stabilizing PFAS-spiked soils in field-scale …

www.sciencedirect.com

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Reposted by Hans Peter Arp

CHEM Trust Europe @chemtrusteurope.bsky.social · Jun 5

Mehr über #Chemikaliencocktails erfahrt ihr außerdem auf unserer Website:
🔗 chemtrust.org/de/chemikali... (3/3)

@thoba.bsky.social @martiwag.bsky.social @kristiansyberg.bsky.social @hanspeterarp.bsky.social @bcarneyalmroth.bsky.social @gabrielsigmund.bsky.social @marleneagerstrand.bsky.social

Chemikaliencocktails - CHEM Trust Europe

Chemikaliencocktails

chemtrust.org

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Hans Peter Arp @hanspeterarp.bsky.social · Jun 4

Plastic-Associated Chemicals: Late Lessons from Early Equilibrium Partitioning Science

In this viewpoint we argue why different fields looking at the hazard and risks of plastic associated chemicals can and should unit using a common, existing framework.

pubs.acs.org/doi/10.1021/...

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Reposted by Hans Peter Arp

Stockholm University @stockholm-uni.bsky.social · Jun 3

A group of leading European scientists have sent an open letter to the European Commission urging stronger regulatory measures against chemical mixtures in the upcoming revision of REACH—the EU’s main regulation for chemicals. @marleneagerstrand.bsky.social
www.su.se/department-o...

Researchers call on EU to strengthen protection against chemical mixtures in REACH revision - Department of Environmental Science

A group of leading scientists from across Europe, including researchers from the Department of Environmental Science, have jointly sent an open letter to the European Commission urging stronger regula...

www.su.se

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Reposted by Hans Peter Arp

Rebecca Altman, PhD @rebecca-altman.bsky.social · May 14

Manuscript delivered 😮‍💨 — now begins development and editing and whatever lies beyond that. Every day I’ve gotten to do this, grateful beyond grateful. 🌱 Thank you, friends, family, for the years (5+) of support. Thank you, thank you, thank you.

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Reposted by Hans Peter Arp

Shira Joudan @shirajoudan.bsky.social · May 7

New paper in Environmental Science: Processes & Impacts
studying the spontaneous defluorination of some trifluoromethylphenols, led by co-first authors Zhefei Guo (PhD candidate) and Genevieve Tremblay (undergrad!) in my group: doi.org/10.1039/D4EM... (open access 😎)

Spontaneous aqueous defluorination of trifluoromethylphenols: substituent effects and revisiting the mechanism

Trifluoromethylphenols (TFMPs) are environmental contaminants that exist as transformation products of aryl-CF3 pharmaceuticals and agrochemicals. Their –CF3 moiety raises concerns as it may form prob...

doi.org

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Reposted by Hans Peter Arp

Mariah Blake @mariahblake.bsky.social · Apr 27

My piece in morning's New York Times about the unlikely activists who are fighting to turn off the tap on forever chemicals— and making serious headway, even as the Trump camp is dismantling environmental regulations. #PFAS @crownpublishing.bsky.social www.nytimes.com/2025/04/27/o...

Opinion | Meet the Unlikely Warriors on the Front Lines of a Major Environmental Battle (Gift Article)

Thousands of ordinary Americans whose lives have been upended by forever chemicals are battling to end their use.

www.nytimes.com

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Reposted by Hans Peter Arp

Chemistry World @chemistryworld.com · Apr 27

Researchers say the rule will make it impossible for the majority of scientists in the country to carry on with, or to apply to, prestigious ERC research grants, or grants from Serbia’s own national science foundation.

Serbia limits academics’ research time to just one hour a day

Researchers say controversial policy will block majority of scientists from applying for grants

www.chemistryworld.com

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Reposted by Hans Peter Arp

Gabriel Sigmund @gabrielsigmund.bsky.social · Apr 25

Great read on #TFA. It was a pleasure to be able to give my thoughts on this issue alongside @hanspeterarp.bsky.social

The Guardian @theguardian.com · Apr 24

‘Alarming’ increase in levels of forever chemical TFA found in European wines

Wines produced after 2010 showed steep rise in contamination of trifluoroacetic acid, analysis finds

www.theguardian.com

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Hans Peter Arp @hanspeterarp.bsky.social · Apr 23

The Tibetan Plateau region is an important source of freshwater for two billion people. Climate change has been releasing substances from the permafrost. We reviewed the literature and applied a ML model to identify #PMT substances that are a concern to water quality.

pubs.acs.org/doi/10.1021/...

The Active Soil Layer of Thawing Permafrost Is an Emergent Source for Organic Substances of Concern to Water Resources

The Tibetan Plateau and surrounding area are an important source of freshwater for approximately two billion people. Climate change has aggregated permafrost degradation in the Tibetan Plateau over th...

pubs.acs.org

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Reposted by Hans Peter Arp

Rachel Salvidge @rachelsalvidge.bsky.social · Apr 19

NEW!: 3 UK military bases have been marked for investigation over fears they may be leaking toxic forever chemicals into drinking water sources and important environmental sites.

In the US, billions of dollars has been spent on military site contamination.

www.theguardian.com/environment/...

Fears that UK military bases may be leaking toxic ‘forever chemicals’ into drinking water

Bases in Norfolk, Devon and Hampshire face MoD investigation over possible leaching of dangerous PFAS into environment

www.theguardian.com

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Reposted by Hans Peter Arp

WATERSHED Investigations @watershed-i.bsky.social · Apr 19

MoD investigating military bases in Norfolk, Hampshire & Devon feared to be leaking PFAS forever chemicals - including globally banned PFOS & carcinogenic PFOA - into drinking water sources. Our article in today's @theguardian.com

www.theguardian.com/environment/...

Fears that UK military bases may be leaking toxic ‘forever chemicals’ into drinking water

Bases in Norfolk, Devon and Hampshire face MoD investigation over possible leaching of dangerous PFAS into environment

www.theguardian.com

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Reposted by Hans Peter Arp

Pam Spaulding @pamspaulding.bsky.social · Apr 14

“No government — regardless of which party is in power — should dictate what private universities can teach, whom they can admit and hire, and which areas of study and inquiry they can pursue."
—Harvard President Alan Garber
is.gd/B8PkXt

The Trump regime threat letter (PDF): is.gd/8L47wv

Harvard says it won’t comply with Trump’s ‘unprecedented’ demands

Last month, the Trump administration launched a review into $9 billion in the school’s federal funding due to allegations of antisemitism.

is.gd

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Hans Peter Arp @hanspeterarp.bsky.social · Apr 11

Mobility at the European Chemicals Agency! At ECHA in Helsinki to present and discuss methods to assess substance #mobility.

This visit is related to the implementation of the new #PMT and #vPvM hazard classes introduced in the EU #CLP Regulation - with Raoul Wolf and Anne Deininger

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Hans Peter Arp @hanspeterarp.bsky.social · Mar 15

Agreed. Two points from the article to highlight:

1. The lack of mechanistic plausibility that particles larger than 1µm can cross blood/membrane barriers (from decades of air pollution research):
2. Results of polyethylene in tissues/blood cannot be trusted due to molecular similarities to lipids

Reposted by Hans Peter Arp

Mariah Blake @mariahblake.bsky.social · Feb 19

I’ve spent the last 8 years working on a book about forever chemicals, or #PFAS, and the chemical industry’s decades-long campaign to cover up their dangers. What I discovered along the way is deeply disturbing, and yet the journey has left me hopeful.

www.penguinrandomhouse.com/books/554198...

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Reposted by Hans Peter Arp

Nature @nature.com · Feb 25

US President Donald Trump is taking a wrecking ball to science and to international institutions. The global research community must take a stand against these attacks.

https://go.nature.com/4kd1vIu

Trump 2.0: an assault on science anywhere is an assault on science everywhere

US President Donald Trump is taking a wrecking ball to science and to international institutions. The global research community must take a stand against these attacks.

go.nature.com

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Hans Peter Arp @hanspeterarp.bsky.social · Feb 19

Please join my webinar today "The Global Threat of from the Irreversible accumulation of Trifluoroacetic Acid (TFA)"

www.healthandenvironment.org/che-webinars...
(3PM EST/ 9 PM CET)

Attendance has reached full capacity, but registrants on the wait list will get access to a recording afterward.

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