Towards a Consensus Method for the Isolation of Microplastics from Freshwater Sediments DOI Open Access
Daniel Elaigwu Enenche, Christine M. Davidson, John J. Liggat

et al.

Environments, Journal Year: 2024, Volume and Issue: 11(7), P. 146 - 146

Published: July 12, 2024

Environmental pollution caused by plastic waste is of global concern. There growing interest in the study microplastics freshwater systems. However, lack harmonized analytical methodology makes it difficult to compare results obtained different laboratories. This work compared methods for recovery from sediments based on density separation flotation followed digestion organic matter. Simulated sediment was spiked with virgin polypropylene, polystyrene, polyamide (PA), polyethylene terephthalate (PET), and polyvinyl fluoride (PVF) pellets, post-consumer polytetrafluoroethylene (PTFE) fragments. Density carried out using distilled water NaCl, CaCl2, ZnCl2, NaI solutions, both intact pellets/fragments following grinding sieving three size fractions (<1 mm, 1–2 >2 mm). Digestions HNO3, NaOH, Fenton’s reagent were compared. Only quantitatively recovered all types polymers. CaCl2 ZnCl2 but PVF PTFE. Different patterns observed same polymer, highlighting fact that not only factor affecting recovery. Digestion efficiencies 6–78% 4–45% 49–80% reagent. Overall, recommended matter removal.

Language: Английский

Unveiling the impact of microplastics and nanoplastics on vascular plants: A cellular metabolomic and transcriptomic review DOI Creative Commons

Fugang Ren,

Jing Huang, Yongqing Yang

et al.

Ecotoxicology and Environmental Safety, Journal Year: 2024, Volume and Issue: 279, P. 116490 - 116490

Published: May 24, 2024

With increasing plastic manufacture and consumption, microplastics/nanoplastics (MP/NP) pollution has become one of the world's pressing global environmental issues, which poses significant threats to ecosystems human health. In recent years, sharp researches have confirmed that MP/NP had direct or indirect effects on vegetative growth sexual process vascular plant. But potential mechanisms remain ambiguous. particles can be adsorbed and/or absorbed by plant roots leaves thus cause diverse This holistic review aims discuss plant, with special emphasis changes metabolic molecular levels. alter substance energy metabolism, as well shifts in gene expression patterns. Key aspects affected stress include carbon nitrogen amino acids biosynthesis hormone signal transduction, related genes, metabolism those involved pathogen defense. Additionally, provides updated insights into physiological responses plants exposed MP/NP, encompassing phenomena such seed/spore germination, photosynthesis, oxidative stress, cytotoxicity, genotoxicity. By examining impact from both perspectives, this sets stage for future investigations complex interactions between pollutants.

Language: Английский

Citations

11
From source to distribution channel: A baseline study of microplastic occurrence in drinking water in Ogun State, Nigeria DOI
Oluwatosin Sarah Shokunbi,

Favour Makanju,

Joshua Nneoma

et al.

Environmental Monitoring and Assessment, Journal Year: 2025, Volume and Issue: 197(4)

Published: March 19, 2025

Language: Английский

Citations

0
Microplastic contamination and ecological risk in a riverine system: A case study from the Valvanti River, Goa, India DOI

Shritesh Mhapsekar,

Niyati Kalangutkar,

Nitesh Joshi

et al.

Environmental Monitoring and Assessment, Journal Year: 2025, Volume and Issue: 197(6)

Published: May 31, 2025

Language: Английский

Citations

0
Investigation of microplastics and potentially toxic elements (PTEs) in sediments of two rivers in Southwestern Nigeria DOI
Oluwatosin Sarah Shokunbi, Gideon Aina Idowu, Christine M. Davidson

et al.

Environmental Monitoring and Assessment, Journal Year: 2024, Volume and Issue: 196(10)

Published: Sept. 18, 2024

Language: Английский

Citations

3
Towards a Consensus Method for the Isolation of Microplastics from Freshwater Sediments DOI Open Access
Daniel Elaigwu Enenche, Christine M. Davidson, John J. Liggat

et al.

Environments, Journal Year: 2024, Volume and Issue: 11(7), P. 146 - 146

Published: July 12, 2024

Environmental pollution caused by plastic waste is of global concern. There growing interest in the study microplastics freshwater systems. However, lack harmonized analytical methodology makes it difficult to compare results obtained different laboratories. This work compared methods for recovery from sediments based on density separation flotation followed digestion organic matter. Simulated sediment was spiked with virgin polypropylene, polystyrene, polyamide (PA), polyethylene terephthalate (PET), and polyvinyl fluoride (PVF) pellets, post-consumer polytetrafluoroethylene (PTFE) fragments. Density carried out using distilled water NaCl, CaCl2, ZnCl2, NaI solutions, both intact pellets/fragments following grinding sieving three size fractions (<1 mm, 1–2 >2 mm). Digestions HNO3, NaOH, Fenton’s reagent were compared. Only quantitatively recovered all types polymers. CaCl2 ZnCl2 but PVF PTFE. Different patterns observed same polymer, highlighting fact that not only factor affecting recovery. Digestion efficiencies 6–78% 4–45% 49–80% reagent. Overall, recommended matter removal.

Language: Английский

Citations

2