Risk assessment of microplastic particles

Nature Reviews Materials, Год журнала: 2022, Номер 7(2), С. 138 - 152

Опубликована: Янв. 21, 2022

Язык: Английский

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A critical review of interactions between microplastics, microalgae and aquatic ecosystem function

Water Research, Год журнала: 2020, Номер 188, С. 116476 - 116476

Опубликована: Сен. 28, 2020

Язык: Английский

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Quality Criteria for Microplastic Effect Studies in the Context of Risk Assessment: A Critical Review

Environmental Science & Technology, Год журнала: 2020, Номер 54(19), С. 11692 - 11705

Опубликована: Авг. 28, 2020

In the literature, there is widespread consensus that methods in plastic research need improvement. Current limitations quality assurance and harmonization prevent progress our understanding of true effects microplastic environment. Following recent development assessment for studies reporting concentrations biota water samples, we propose a method to assess effect studies. We reviewed 105 with aquatic biota, provided systematic overview their characteristics, developed 20 criteria four main categories (particle characterization, experimental design, applicability risk assessment, ecological relevance), protocol future particles, and, finally, used all information define weight evidence respect demonstrated mechanisms. On average, scored 44.6% (range 20–77.5%) maximum score. No study positively on criteria, reconfirming urgent better assurance. Most recommendations improvement relate avoiding verifying background contamination, improving environmental relevance exposure conditions. The majority (86.7%) evaluated particle characteristics properly, nonetheless it should be underlined by failing provide an entire experiment can become irreproducible. Studies addressed environmentally realistic polymer types fairly well; however, was mismatch between sizes tested those targeted when analyzing samples. far too many instances, suggest speculate mechanisms are poorly supported design data study. This represents problem decision-makers needs minimized research. papers, authors frame 10 as "suggested", whereas 7 them framed "demonstrated". When accounting according three these remained. These inhibition food assimilation and/or decreased nutritional value food, internal physical damage, external damage. recommend addresses higher priority.

Язык: Английский

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Weathering Plastics as a Planetary Boundary Threat: Exposure, Fate, and Hazards

Environmental Science & Technology, Год журнала: 2021, Номер 55(11), С. 7246 - 7255

Опубликована: Май 11, 2021

We described in 2017 how weathering plastic litter the marine environment fulfils two of three criteria to impose a planetary boundary threat related "chemical pollution and release novel entities": (1) planetary-scale exposure, which (2) is not readily reversible. Whether plastics meet third criterion, (3) eliciting disruptive impact on vital earth system processes, was uncertain. Since then, several important discoveries have been made motivate re-evaluation. A key issue if macroplastics, microplastics, nanoplastics, their leachates an inherently higher potential elicit adverse effects than natural particles same size. summarize findings context that demonstrate increasing fate processes leading poorly reversible pollution, (eco)toxicological hazards thresholds. provide evidence criterion could be fulfilled for sensitive environments therefore conclude pose threat. suggest future research priorities better understand modulated by exposure continuous parametrize threshold pollution.

Язык: Английский

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Impacts of nanoplastics on bivalve: Fluorescence tracing of organ accumulation, oxidative stress and damage

Journal of Hazardous Materials, Год журнала: 2020, Номер 392, С. 122418 - 122418

Опубликована: Фев. 27, 2020

Язык: Английский

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The occurrence of microplastic in Mu Us Sand Land soils in northwest China: Different soil types, vegetation cover and restoration years

Journal of Hazardous Materials, Год журнала: 2020, Номер 403, С. 123982 - 123982

Опубликована: Сен. 16, 2020

Язык: Английский

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Identification of Trace Polystyrene Nanoplastics Down to 50 nm by the Hyphenated Method of Filtration and Surface-Enhanced Raman Spectroscopy Based on Silver Nanowire Membranes

Environmental Science & Technology, Год журнала: 2022, Номер 56(15), С. 10818 - 10828

Опубликована: Июль 19, 2022

Nanoplastics are emerging pollutants that pose potential threats to the environment and organisms. However, in-depth research on nanoplastics has been hindered by absence of feasible reliable analytical methods, particularly for trace nanoplastics. Herein, we propose a hyphenated method involving membrane filtration surface-enhanced Raman spectroscopy (SERS) analyze in water. In this method, bifunctional Ag nanowire was employed enrich enhance their spectra situ, which omitted sample transfer avoided losing smaller Good retention rates (86.7% 50 nm approximately 95.0% 100–1000 nm) high sensitivity (down 10–7 g/L 50–1000 up 105 SERS enhancement factor) standard polystyrene (PS) were achieved using proposed method. PS with concentrations from 10–1 sizes ranging 1000 successfully detected mapping. Moreover, micro- environmental water samples collected seafood market also at μg/L level. Consequently, provides more possibilities analyzing low-concentration aquatic environments enrichment efficiency, minimal loss, sensitivity.

Язык: Английский

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Characterizing microplastic hazards: which concentration metrics and particle characteristics are most informative for understanding toxicity in aquatic organisms?

Microplastics and Nanoplastics, Год журнала: 2022, Номер 2(1)

Опубликована: Авг. 6, 2022

Abstract There is definitive evidence that microplastics, defined as plastic particles less than 5 mm in size, are ubiquitous the environment and can cause harm to aquatic organisms. These findings have prompted legislators environmental regulators seek out strategies for managing risk. However, microplastics also an incredibly diverse contaminant suite, comprising a complex mixture of physical chemical characteristics (e.g., sizes, morphologies, polymer types, additives, sorbed chemicals, impurities), making it challenging identify which particle might influence associated hazards life. In addition, there lack consensus on how microplastic concentrations should be reported. This not only makes difficult compare across studies, but begs question concentration metric may most informative hazard characterization. Thus, international panel experts was convened 1) metrics mass or count per unit volume mass) development health-based thresholds risk assessment 2) best inform toxicological concerns. Based existing knowledge, recommended toxicity tests calculated from both at minimum, though ideally researchers report additional metrics, such surface area, more specific mechanisms. Regarding characteristics, sufficient conclude size critical determinant outcomes, particularly mechanisms food dilution tissue translocation .

Язык: Английский

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From source to sink: Review and prospects of microplastics in wetland ecosystems

The Science of The Total Environment, Год журнала: 2020, Номер 758, С. 143633 - 143633

Опубликована: Ноя. 12, 2020

Язык: Английский

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Microplastics and plankton: Knowledge from laboratory and field studies to distinguish contamination from pollution

Journal of Hazardous Materials, Год журнала: 2021, Номер 417, С. 126057 - 126057

Опубликована: Май 8, 2021

Язык: Английский

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