Characteristics, fate, and sources of microplastics contaminant in surface water and sediments of river water

Physics and Chemistry of the Earth Parts A/B/C, Год журнала: 2024, Номер 134, С. 103596 - 103596

Опубликована: Апрель 9, 2024

Язык: Английский

---

Evaluation of potentially toxic elements and microplastics in the water treatment facility

Environmental Monitoring and Assessment, Год журнала: 2024, Номер 196(5)

Опубликована: Апрель 25, 2024

Abstract The potentially harmful effects of consuming toxic elements (PTEs) and microplastics (MPs) regularly via drinking water are a significant cause for worry. This study investigated PTEs (Cd, Cu, Cr, Ni, Pd, Zn, Co), MPs, turbidity, pH, conductivity, health risk assessment in the treatment plant Kielce, Poland. Zn had highest concentrations throughout facility, whereas Cd, Pb, Co lower (< 0.1 µg/L). order among specified was like Zn˃Cu˃Ni˃Cr˃Cd˃Pb Co. minimum turbidity 0.34, maximum 1.9 NTU. range pH samples 6.51—7.47. conductivity 1,203—1,445 ms samples. These identified MPs were categorized into fiber fragments. color these blue, red, black, green, transparent. size 196 4,018 µm, while average 2,751 ± 1,905 µm. concentration per liter 108.88 55.61. listed C, O, Na, Mg, Al, Si, K, Ca, Ti. Fe predominant seen using EDX. HQ values less than one adults children. human associated with all detected revealed that exhibit satisfactory degree non-carcinogenic adverse risk. HI children age groups one. In most samples, carcinogenic value exceeds threshold 10 −6 . MP should be periodically monitored to minimize consumers' environmental pollution risks.

Язык: Английский

---

Unravelling the microplastic contamination: A comprehensive analysis of microplastics in indoor house dust

Indoor and Built Environment, Год журнала: 2024, Номер 33(8), С. 1519 - 1541

Опубликована: Апрель 17, 2024

Microplastics (MPs), measuring less than 5 mm, have been causing environmental concerns in aquatic ecosystems, and work has done indoor environments, where humans spend most of their lives. This finding revealed a diverse range MPs within house dust samples. These encompassed fibres, fragments, foams, pellets films. Due to the ubiquity textile-based items, fibres are common MP. The different colours like black, red, blue, yellow, white brown. study there were substantial differences MP sizes across households. average size was 178.87–3713.99 µm. One hundred eighteen particles identified as MPs. 22 types MPs, shedding light on these materials’ extensive sources applications everyday household items. environments raise about potential human exposure underscore need for further research into health implications. found samples low-density polyethylene, polypropylene, polyamide, polyvinyl chloride, high-density polyethylene polystyrene. Carbon, nitrogen, fluorine, sodium, sulphur, potassium, calcium, zinc, oxygen magnesium elements all Compared with active sampling, slightly more

Язык: Английский

---

Microplastics and associated polycyclic aromatic hydrocarbons in surface water and sediment of the Bay of Bengal coastal area, India: sources, pathway and ecological risk

Environmental Geochemistry and Health, Год журнала: 2024, Номер 46(5)

Опубликована: Апрель 22, 2024

Язык: Английский

---

Plastic waste production and management in Jashore municipality and its surrounding areas, Bangladesh: An overview

Physics and Chemistry of the Earth Parts A/B/C, Год журнала: 2024, Номер 134, С. 103580 - 103580

Опубликована: Фев. 28, 2024

Язык: Английский

---

Studies on hydrolysis/alcoholysis/ammonolysis mechanisms of ethylene terephthalate dimer using DFT method

Arabian Journal of Chemistry, Год журнала: 2024, Номер 17(4), С. 105719 - 105719

Опубликована: Март 7, 2024

Hydrolysis/alcoholysis/ammonolysis are considered as viable routes for efficient degradation and recycling of polyethylene terephthalate waste plastic. The possible hydrolysis/alcoholysis/ammonolysis pathways the ethylene dimer were investigated by density functional theory (DFT) method M06/cc-pVDZ. geometric structure optimization frequency calculation various intermediates, transition states products involved in reaction carried out to obtain thermodynamic kinetic parameter values. results show that energy barrier cracking process can be reduced under conditions hydrolysis/alcoholysis/ammonolysis, which makes easier. Additionally, at 298 K 1 atm, total rate constants 1.51 × 10-43 cm3 molecular-1s−1, 1.86 10-41 2.82 10-40 respectively. hydrolysis mainly terephthalic acid glycol; alcoholysis dimethyl ammonolysis include terephthalamide glycol. Furthermore, this study shows Gibbs free change is negatively correlated with temperature an increase enhance spontaneity reaction.

Язык: Английский

---

PET microplastics influenced microbial community and heavy metal speciation in heavy-metal contaminated soils

Applied Soil Ecology, Год журнала: 2024, Номер 201, С. 105488 - 105488

Опубликована: Июнь 18, 2024

Язык: Английский

---

Quantitative and rapid detection of nanoplastics labeled by luminescent metal phenolic networks using surface-enhanced Raman scattering

Journal of Hazardous Materials, Год журнала: 2024, Номер 470, С. 134194 - 134194

Опубликована: Апрель 1, 2024

Язык: Английский

---

Ocean plastic pollution: a human and biodiversity loop

Environmental Geochemistry and Health, Год журнала: 2025, Номер 47(4)

Опубликована: Фев. 27, 2025

Язык: Английский

---

Occurrence, quantification and characterisation of microplastics in Godavari River, India

Case Studies in Chemical and Environmental Engineering, Год журнала: 2023, Номер 8, С. 100542 - 100542

Опубликована: Ноя. 8, 2023

One of the difficult and well-known pollutants that has a negative impact on human health is Microplastics (MPs). This study's primary goal to present state our understanding evidence, quantification, origin, effects MPs in Godavari River. According quantitative analysis investigation (digestion, separation, filtration, characterization), mean MP concentration river was found be 3.9 items/L (3900 Items/m3). were at all six sites, with concentrations ranging from 6.5 2.2 (6500–2200 items/m3). The most prevalent shape fiber (81.5 %), followed by foam (13.2%), fragments (4.4%), film (0.7%). colors observed blue (26%), Transparent (25%), pink (17%), yellow (9%), black (8%), white (6%), green (3%), red (2%), violet From chemical characterization ATR-FTIR, polymers detected polypropylene (PP), high-density polyethylene (HDPE), low-density (LDPE), (acrylonitrile butadiene styrene) ABS, EVA, (polystyrene) PS, nylon. Urban areas have higher than less populated areas. Through direct or indirect consumption, River may risk agriculture, living beings. current study adds pollution provides baseline data can used assess precise mitigation.

Язык: Английский

---