Sam Harrison
@samharrison.science
📈 Environmental modeller @ukceh.bsky.social Lancaster
⚛️ Chemical fate & exposure to plastics, pharma, PFAS
🖥️ Research software engineer, #OpenScience #OpenData and #OpenSource advocate
⛰️ Fell runner & mountain-goer
🧑 Own views
🔗 https://samharrison.science
⚛️ Chemical fate & exposure to plastics, pharma, PFAS
🖥️ Research software engineer, #OpenScience #OpenData and #OpenSource advocate
⛰️ Fell runner & mountain-goer
🧑 Own views
🔗 https://samharrison.science
Three of us from @ukceh.bsky.social are attending #SafePlastChem in Ascona, Switzerland, this week. We are sharing insights on plastic chemical release dynamics, environmental fate of microplastics vs chemicals and modeling to understanding fragmentation and leaching.
@lxbllngs.bsky.social
@lxbllngs.bsky.social
January 27, 2026 at 12:40 PM
Three of us from @ukceh.bsky.social are attending #SafePlastChem in Ascona, Switzerland, this week. We are sharing insights on plastic chemical release dynamics, environmental fate of microplastics vs chemicals and modeling to understanding fragmentation and leaching.
@lxbllngs.bsky.social
@lxbllngs.bsky.social
January 26, 2026 at 10:26 AM
It did depart eventually, which is a good job as it meant I got to enjoy these stunning Ticino views today!
January 25, 2026 at 9:35 PM
It did depart eventually, which is a good job as it meant I got to enjoy these stunning Ticino views today!
I'm on my way to Ascona for the SafePlastChem conference. I'll be presenting our latest modelling efforts to link plastic fragmentation and additive leaching to uncover the complex interplay between particle size and additives. Well, I will be if my delayed train from Paris Lyon ever departs...
January 24, 2026 at 2:03 PM
I'm on my way to Ascona for the SafePlastChem conference. I'll be presenting our latest modelling efforts to link plastic fragmentation and additive leaching to uncover the complex interplay between particle size and additives. Well, I will be if my delayed train from Paris Lyon ever departs...
Using the open source FRAGMENT-MNP model (fragmentmnp.ceh.ac.uk), we predict that particle counts will fall below 1 particle/g soil after 600-700 days. Experiments showed that more than 90% of polymer carbon was mineralised within 270 days.
December 3, 2025 at 8:53 AM
Using the open source FRAGMENT-MNP model (fragmentmnp.ceh.ac.uk), we predict that particle counts will fall below 1 particle/g soil after 600-700 days. Experiments showed that more than 90% of polymer carbon was mineralised within 270 days.
I hate doing expenses claims...
September 8, 2025 at 7:37 AM
I hate doing expenses claims...
There will be no #GlobalPlasticsTreaty from #INC5.2. The Chair informed us at just after 6am this morning that, despite best efforts and a new revised Chair's text overnight, consensus could not be reached.
#PlasticsTreaty
#PlasticsTreaty
August 15, 2025 at 5:13 AM
There will be no #GlobalPlasticsTreaty from #INC5.2. The Chair informed us at just after 6am this morning that, despite best efforts and a new revised Chair's text overnight, consensus could not be reached.
#PlasticsTreaty
#PlasticsTreaty
It is 5.30am in Geneva and the final #INC5.2 plenary is scheduled to resume.
The new revised Chair's text is many steps from being able to fully end plastic pollution, but it is a few steps in the right direction. Now we find out how countries will react.
#PlasticsTreaty #GlobalPlasticsTreaty
The new revised Chair's text is many steps from being able to fully end plastic pollution, but it is a few steps in the right direction. Now we find out how countries will react.
#PlasticsTreaty #GlobalPlasticsTreaty
August 15, 2025 at 3:41 AM
It is 5.30am in Geneva and the final #INC5.2 plenary is scheduled to resume.
The new revised Chair's text is many steps from being able to fully end plastic pollution, but it is a few steps in the right direction. Now we find out how countries will react.
#PlasticsTreaty #GlobalPlasticsTreaty
The new revised Chair's text is many steps from being able to fully end plastic pollution, but it is a few steps in the right direction. Now we find out how countries will react.
#PlasticsTreaty #GlobalPlasticsTreaty
Waiting for the final plenary of #INC5.2. Will it be this side of midnight?!
#GlobalPlasticsTreaty #PlasticsTreaty
#GlobalPlasticsTreaty #PlasticsTreaty
August 14, 2025 at 7:23 PM
Waiting for the final plenary of #INC5.2. Will it be this side of midnight?!
#GlobalPlasticsTreaty #PlasticsTreaty
#GlobalPlasticsTreaty #PlasticsTreaty
Les Aubes - a series of free concerts every morning during summer from 6-7am on Bains des Pâquis. Completely free and the best bit is you can watch whilst enjoying your morning swim!
#INC5.2 #PlasticsTreaty #GlobalPlasticsTreaty
#INC5.2 #PlasticsTreaty #GlobalPlasticsTreaty
August 13, 2025 at 6:57 AM
Les Aubes - a series of free concerts every morning during summer from 6-7am on Bains des Pâquis. Completely free and the best bit is you can watch whilst enjoying your morning swim!
#INC5.2 #PlasticsTreaty #GlobalPlasticsTreaty
#INC5.2 #PlasticsTreaty #GlobalPlasticsTreaty
I escaped from the madness of #INC5.2 and Geneva with a day trip across the border to the Chamonix valley today. The (literal) high point of my walk was Lac de la Perseverance (photo 3), which seems a very suitably named lake to visit right now!
#GlobalPlasticsTreaty #PlasticsTreaty
#GlobalPlasticsTreaty #PlasticsTreaty
August 10, 2025 at 9:25 PM
I escaped from the madness of #INC5.2 and Geneva with a day trip across the border to the Chamonix valley today. The (literal) high point of my walk was Lac de la Perseverance (photo 3), which seems a very suitably named lake to visit right now!
#GlobalPlasticsTreaty #PlasticsTreaty
#GlobalPlasticsTreaty #PlasticsTreaty
Some reflections on the first few days of #INC5.2 negotations in Geneva, towards a #GlobalPlasticsTreaty.
Are the negotiations going well? Frankly, not really, though there are reasons for hope 👇
@ukceh.bsky.social
#PlasticsTreaty #PlasticTreaty #GlobalPlasticTreaty
Are the negotiations going well? Frankly, not really, though there are reasons for hope 👇
@ukceh.bsky.social
#PlasticsTreaty #PlasticTreaty #GlobalPlasticTreaty
August 8, 2025 at 10:32 AM
Some reflections on the first few days of #INC5.2 negotations in Geneva, towards a #GlobalPlasticsTreaty.
Are the negotiations going well? Frankly, not really, though there are reasons for hope 👇
@ukceh.bsky.social
#PlasticsTreaty #PlasticTreaty #GlobalPlasticTreaty
Are the negotiations going well? Frankly, not really, though there are reasons for hope 👇
@ukceh.bsky.social
#PlasticsTreaty #PlasticTreaty #GlobalPlasticTreaty
Insightful screening of Homo Plasticus: Plastic Inside Us this evening, followed by an equally as insightful panel discussion. Lots of emerging evidence of the real health risks plastics pose to society, underpinning the need for a strong #GlobalPlasticsTreaty
#INC5.2 #PlasticsTreaty
#INC5.2 #PlasticsTreaty
August 4, 2025 at 9:24 PM
Insightful screening of Homo Plasticus: Plastic Inside Us this evening, followed by an equally as insightful panel discussion. Lots of emerging evidence of the real health risks plastics pose to society, underpinning the need for a strong #GlobalPlasticsTreaty
#INC5.2 #PlasticsTreaty
#INC5.2 #PlasticsTreaty
Panel discussion on "science and research for an effective instrument": strong support for science-based decisions free of conflicts of interest, and a need for transparency in not just Treaty processes, but the data needed to support it.
#INC5.2 #PlasticsTreaty
@bcarneyalmroth.bsky.social
#INC5.2 #PlasticsTreaty
@bcarneyalmroth.bsky.social
August 4, 2025 at 12:42 PM
Panel discussion on "science and research for an effective instrument": strong support for science-based decisions free of conflicts of interest, and a need for transparency in not just Treaty processes, but the data needed to support it.
#INC5.2 #PlasticsTreaty
@bcarneyalmroth.bsky.social
#INC5.2 #PlasticsTreaty
@bcarneyalmroth.bsky.social
#INC5.2 Conversation with Observers starts with @ingerandersen.bsky.social highlighting that UNEA 5/14 mandated negotiations for a strong #PlasticsTreaty considering the full lifecycle of plastics, with safe and sustainable production.
#GlobalPlasticsTreaty
#GlobalPlasticsTreaty
August 4, 2025 at 9:33 AM
#INC5.2 Conversation with Observers starts with @ingerandersen.bsky.social highlighting that UNEA 5/14 mandated negotiations for a strong #PlasticsTreaty considering the full lifecycle of plastics, with safe and sustainable production.
#GlobalPlasticsTreaty
#GlobalPlasticsTreaty
Exposure modelling is a crucial part of assessing the risk from chemicals. Come and find out about the latest advances in exposure modelling at our #SETACVienna session on Wednesday! 0930 and 1140 in Hall D3, with posters up all day (172-194).
@praetorius-a.bsky.social
@praetorius-a.bsky.social
May 12, 2025 at 10:17 AM
Exposure modelling is a crucial part of assessing the risk from chemicals. Come and find out about the latest advances in exposure modelling at our #SETACVienna session on Wednesday! 0930 and 1140 in Hall D3, with posters up all day (172-194).
@praetorius-a.bsky.social
@praetorius-a.bsky.social
I'm fairly confident that I have never caught a DB train that wasn't delayed, and I've caught quite a few. Today is no exception! Though I suppose if they're *all* delayed, then at least you're more likely to still catch your connection...
May 10, 2025 at 2:16 PM
I'm fairly confident that I have never caught a DB train that wasn't delayed, and I've caught quite a few. Today is no exception! Though I suppose if they're *all* delayed, then at least you're more likely to still catch your connection...
#SETACVienna here I come! I'm taking a #FlightFree journey starting with the @eurostarnews.bsky.social to Brussels, then DB trains to Frankfurt and Vienna. Departure: 0704. Arrival: 2305 (if I make the connections!) Plenty of time to write that presentation! 😬
#FlyingLess @flightfreeuk.bsky.social
#FlyingLess @flightfreeuk.bsky.social
May 10, 2025 at 6:26 AM
#SETACVienna here I come! I'm taking a #FlightFree journey starting with the @eurostarnews.bsky.social to Brussels, then DB trains to Frankfurt and Vienna. Departure: 0704. Arrival: 2305 (if I make the connections!) Plenty of time to write that presentation! 😬
#FlyingLess @flightfreeuk.bsky.social
#FlyingLess @flightfreeuk.bsky.social
We studied a range of polymers - PP, LDPE, PA-6, HIPS and TPU - and quantified the release of water-soluble organics, as well as secondary micro- and nanoplastics (including their particle size distributions).
March 26, 2025 at 10:19 AM
We studied a range of polymers - PP, LDPE, PA-6, HIPS and TPU - and quantified the release of water-soluble organics, as well as secondary micro- and nanoplastics (including their particle size distributions).
It's time for the return journey! After a weekend in the Tyrol Alps, I'm travelling back from Innsbruck via Zürich and Paris. Looking forward to some great views along the way!
📷 Skiing on Hahnenkamm, evening arrival in Zürich, early morning run up Zürichberg
📷 Skiing on Hahnenkamm, evening arrival in Zürich, early morning run up Zürichberg
March 11, 2025 at 9:45 AM
It's time for the return journey! After a weekend in the Tyrol Alps, I'm travelling back from Innsbruck via Zürich and Paris. Looking forward to some great views along the way!
📷 Skiing on Hahnenkamm, evening arrival in Zürich, early morning run up Zürichberg
📷 Skiing on Hahnenkamm, evening arrival in Zürich, early morning run up Zürichberg
Made the connection with *lots* of time to spare, mostly because the Frankfurt-Vienna ICE is 30 mins delayed. Not too bad, all things considered - at least I've avoided an unintended overnight stop in Frankfurt!
March 3, 2025 at 4:04 PM
Made the connection with *lots* of time to spare, mostly because the Frankfurt-Vienna ICE is 30 mins delayed. Not too bad, all things considered - at least I've avoided an unintended overnight stop in Frankfurt!
It's looking good for my connection in Frankfurt! 😌 And in fairness to DB, whilst their reliability might be rubbish, they do have a lovely app that keeps you informed how rubbish their reliability currently is!
March 3, 2025 at 2:45 PM
It's looking good for my connection in Frankfurt! 😌 And in fairness to DB, whilst their reliability might be rubbish, they do have a lovely app that keeps you informed how rubbish their reliability currently is!
20 min connection in Brussels? No problem! The "short cut" was open (first time I've seen that in years - @seatsixtyone.bsky.social take note!) and so I was on the correct platform 3 minutes after arriving.
March 3, 2025 at 11:29 AM
20 min connection in Brussels? No problem! The "short cut" was open (first time I've seen that in years - @seatsixtyone.bsky.social take note!) and so I was on the correct platform 3 minutes after arriving.
Made my first connection to the @eurostarnews.bsky.social London-Brussels service with plenty of time to spare. A record 23 minutes from disembarking at Euston to the Eurostar departures lounge! I only have 20 minutes to connect in Brussels - let's see how that goes...
March 3, 2025 at 8:51 AM
Made my first connection to the @eurostarnews.bsky.social London-Brussels service with plenty of time to spare. A record 23 minutes from disembarking at Euston to the Eurostar departures lounge! I only have 20 minutes to connect in Brussels - let's see how that goes...