Burnt plastic (pyroplastic) from the M/V X-Press Pearl ship fire and plastic spill contain compounds that activate endocrine and metabolism-related human and fish transcription factors

Published: Sept. 2, 2024

In May 2021, the M/V X-Press Pearl ship fire disaster led to largest maritime spill of resin pellets (nurdles) and burnt plastic (pyroplastic). Field samples collected from beaches in Sri Lanka nearest comprised nurdles pieces pyroplastic. Three years later, toxicity spilled material remains unresolved. To begin understanding its potential toxicity, solvent extracts pyroplastic were screened for their bioactivity by several Attagene FACTORIAL bioassays (TF, NR, AquaTox), which measured activity a combined 70 human transcription factor response elements nuclear receptors 6-7 each three phylogenetically distinct fish species. Extracts pyroplastics robustly activated end points aryl hydrocarbon receptor (AhR), estrogen (ER), pregnane X (PXR), peroxisome proliferator-activated (PPAR), retinoid (RXR), oxidative stress (NRF2), others. This profile was most similar (similarity score = 0.96) that probable carcinogens benzo[b]fluoranthene benzo[k]fluoranthene despite being complex mixture thousands compounds. The diminished only slightly eight months after spill. AquaTox bioassay activation ERa, ERb, androgen (AR), PPARa, PPARy, RXRb human, zebrafish (Danio rerio), Japanese medaka (Oryzias latipes), rainbow trout (Oncorhynchus mykiss), revealing species-specific sensitivities chemicals associated with pyroplastics. These findings provide needed information guide long-term monitoring efforts, make hazard assessments material, direct further research on pyroplastic, an emerging global contaminant.

Language: Английский

---

Broken to Pieces - Fragmented Marine Plastics as the Prevalent Litter Type on a Small Island Beach in the Adriatic

Published: Jan. 1, 2024

Download This Paper Open PDF in Browser Add to My Library Share: Permalink Using these links will ensure access this page indefinitely Copy URL DOI

Language: Английский

---

Demonstration of online STEAM learning through Arduino uno-based automatic trash with ultrasonic sensor

AIP conference proceedings, Journal Year: 2024, Volume and Issue: 3116, P. 060032 - 060032

Published: Jan. 1, 2024

This research aims to utilize robotics technology create an Arduino-based automatic trash can innovation with infrared sensor that integrates STEAM learning based on problems in the surrounding environment during Covid-19 pandemic. study follows procedure of Research and Development (R&D) model. The innovations made this include being able open close automatically, find out capacity remaining can, provide feedback form thanks for efforts community who have disposed their right place. making cans are integrated approach be used as alternative improve students' critical, creative, logical thinking skills scientific work trigger enthusiasm continue innovate solving environment. In addition, it is hoped inspire educate public dispose waste according place provided.

Language: Английский

---

Burnt Plastic (Pyroplastic) from the M/V X-Press Pearl Ship Fire and Plastic Spill Contain Compounds That Activate Endocrine and Metabolism-Related Human and Fish Transcription Factors

Environment & Health, Journal Year: 2024, Volume and Issue: 3(1), P. 91 - 101

Published: Oct. 30, 2024

In May 2021, the M/V X-Press Pearl ship fire disaster led to largest maritime spill of resin pellets (nurdles) and burnt plastic (pyroplastic). Field samples collected from beaches in Sri Lanka nearest comprised nurdles pieces pyroplastic. Three years later, toxicity spilled material remains unresolved. To begin understanding its potential toxicity, solvent extracts pyroplastic were screened for their bioactivity by several Attagene FACTORIAL bioassays (TF, NR, AquaTox), which measured activity a combined 70 human transcription factor response elements nuclear receptors 6 7 each three phylogenetically distinct fish species. Extracts pyroplastics robustly activated end points aryl hydrocarbon receptor (AhR), estrogen (ER), pregnane X (PXR), peroxisome proliferator-activated (PPAR), retinoid (RXR), oxidative stress (NRF2) had activation others. The profile was most similar (similarity score = 0.96) that probable carcinogens benzo[b]fluoranthene benzo[k]fluoranthene despite being complex mixture thousands compounds. diminished only slightly eight months after spill. AquaTox bioassay ERα, ERβ, androgen (AR), PPARα, PPARγ, RXRβ human, zebrafish (Danio rerio), Japanese medaka (Oryzias latipes), rainbow trout (Oncorhynchus mykiss), revealing species-specific sensitivities chemicals associated with pyroplastics. These findings provide needed information guide long-term monitoring efforts, make hazard assessments material, direct further research on pyroplastic, an emerging global contaminant.

Language: Английский

---

Control of Sediment Grainsize on Lead (Pb) Content in the Reef Sediment Systems: A Case Study of Panjang Island, Banten Bay, Indonesia

RISET Geologi dan Pertambangan, Journal Year: 2023, Volume and Issue: 33(2), P. 123 - 123

Published: Dec. 30, 2023

Sediments are known to accumulate pollutants from terrestrial and coastal waters, can be used as an indicator monitor metal pollution in the biosphere effects of anthropogenic events environment. Eight samples reef surface sediments were collected north east coasts Panjang Island. Island, located Banten Bay, was chosen for this study because its proximity many industrial areas. Nevertheless, island supports a natural ecosystem, including coral reefs, seagrass, mangroves. The analyzed grainsize, component analysis, Pb concentrationusing AAS flame method. result indicated concentration grain-supported sediment Island is varied. detected concentrations 0-28.68 mg/kg dry weight. that different value mainly controlled by grainsize. highest accumulation occurs areas with very fine which have better adsorption capabilities heavy metals. This also suggests medium sand fraction may values. that, according classification ANZECC/ARMCANZ, all area low risk toxicant level. Additionally, SQG-Q (Sediment Quality Guidelines) quotient analysis indicates posed low-moderate impact adverse biological effect.

Language: Английский

---