Simultaneous sorption behaviors of UV filters on the virgin and aged micro-high-density polyethylene under environmental conditions.
TL;DR: In this paper, the simultaneous sorption behaviors of four analytes from the UV filters group, benzophenone (BPh), 4-methylbenzylidene camphor (4MBC), BPh, BPh3, and BPh2 on virgin and aged high-density polyethylene (HDPE) with a particle size of 125 μm in milliQ and river water were examined.
About: This article is published in Science of The Total Environment.The article was published on 2021-05-24 and is currently open access. It has received 14 citations till now. The article focuses on the topics: Sorption & High-density polyethylene.
Citations
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TL;DR: In this article, a review of the occurrence, fate, and impacts of microplastics in aquatic environments worldwide is presented, with particular emphasis on contaminants of emerging concern (CECs).
Abstract: Microplastics have been observed in most environments, and their concentrations are expected to increase over the coming decades given the continued and increased production of synthetic polymer products. The expected increase in microplastic pollution may elevate the risk posed by these synthetic particles to the health of both the aquatic environment and humans. This review seeks to provide a current overview of the occurrence, fate, and impacts of microplastics in aquatic environments worldwide. We first summarize studies recording the occurrence of representative microplastics in marine and freshwater environments, revealing the sources and composition of microplastics. Then, the sorption behavior and relationship between microplastics and pollutants are discussed. The influence of the weathering/aging process and environmental factors on sorption behavior in laboratory tests and real environments is reviewed with particular emphasis on contaminants of emerging concern (CECs). Finally, the potential toxic effects of microplastics on aquatic biota and human health are discussed. This review aims to advance our understanding of the fate and impacts of microplastics in aquatic environments and to shed light on important questions warranting further investigation.
33 citations
TL;DR: In this article , the adsorption behaviors and mechanism of typical NOM, humic acid (HA), on polyvinyl chloride (PVC) and polystyrene (PS) microplastics were investigated.
10 citations
TL;DR: In this article , a UV-vis spectroscopy-based approach was developed for in-situ monitoring organic contaminants uptake onto suspended microplastics after correcting the light scattering interference from microplastic suspensions and establishing the nonlinear relationship between concentration and light absorbance of organic species.
9 citations
TL;DR: In this article , the authors provided an overview of the definition and source of microplastics and analyzed the potential aging pathways of MPs in the current aquatic environment and elaborated on the changes in the physicochemical properties of MPs during the aging process (e.g., particle size, crystallinity, thermodynamic properties, and surface functional groups).
Abstract: Plastic wastes are becoming one of the most serious environmental pollutants because of their high antidegradation properties and the damage they cause to human health. More seriously, plastics can become smaller in size and form microplastics (MPs), attributing to the oxidation, weathering, and fragmentation processes. The influx of MPs into water bodies seriously affects the quality of the aquatic environment. Therefore, it is necessary to summarize the aging process of MPs. In this review, we first provided an overview of the definition and source of MPs. Then we analyzed the potential aging pathways of MPs in the current aquatic environment and elaborated on the changes in the physicochemical properties of MPs during the aging process (e.g., particle size, crystallinity, thermodynamic properties, and surface functional groups). In addition, the possible synergistic contamination of MPs with other pollutants in the environment is illustrated. Finally, the mechanisms of generation and toxicity of environmental persistent free radicals (EPFRs) that may be generated during the photoaging of MPs were described, and the feasibility of using photoaged MPs as photosensitizers to catalyze photoreactive degradation of organic pollutants is proposed. Overall, this review provides a comprehensive and objective evaluation of the behavior of MPs in the aquatic environment.
6 citations
TL;DR: In this article , the physicochemical characteristics of microplastics undergoing natural and artificial aging and evaluated current analytical methods used in aging studies are discussed, leading to a conclusion that AOPs composed of oxidant and ultraviolet (UV) irradiation can better facilitate the alteration of MPs compared to UV irradiation alone.
5 citations
References
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TL;DR: Global plastics production and the accumulation of plastic waste are documented, showing that trends in mega- and macro-plastic accumulation rates are no longer uniformly increasing and that the average size of plastic particles in the environment seems to be decreasing.
Abstract: One of the most ubiquitous and long-lasting recent changes to the surface of our planet is the accumulation and fragmentation of plastics. Within just a few decades since mass production of plastic...
4,044 citations
TL;DR: It is shown that microplastics are ingested by, and may impact upon, zooplankton, and imply that marine microplastic debris can negatively impact upon zoopLankton function and health.
Abstract: Small plastic detritus, termed “microplastics”, are a widespread and ubiquitous contaminant of marine ecosystems across the globe. Ingestion of microplastics by marine biota, including mussels, worms, fish, and seabirds, has been widely reported, but despite their vital ecological role in marine food-webs, the impact of microplastics on zooplankton remains under-researched. Here, we show that microplastics are ingested by, and may impact upon, zooplankton. We used bioimaging techniques to document ingestion, egestion, and adherence of microplastics in a range of zooplankton common to the northeast Atlantic, and employed feeding rate studies to determine the impact of plastic detritus on algal ingestion rates in copepods. Using fluorescence and coherent anti-Stokes Raman scattering (CARS) microscopy we identified that thirteen zooplankton taxa had the capacity to ingest 1.7–30.6 μm polystyrene beads, with uptake varying by taxa, life-stage and bead-size. Post-ingestion, copepods egested faecal pellets lade...
1,832 citations
TL;DR: The inaccurate use of technical terms, the problem associated with quantities for measuring adsorption performance, the important roles of the adsorbate and adsorbent pKa, and mistakes related to the study of adsor adaptation kinetics, isotherms, and thermodynamics are discussed.
1,691 citations
TL;DR: This systematic study shows the emerging pollution of inland river sediments with microplastic particles and underlines the importance of rivers as vectors of transport of microplastics into the ocean.
Abstract: Plastic debris is one of the most significant organic pollutants in the aquatic environment. Because of properties such as buoyancy and extreme durability, synthetic polymers are present in rivers, lakes, and oceans and accumulate in sediments all over the world. However, freshwater sediments have attracted less attention than the investigation of sediments in marine ecosystems. For this reason, river shore sediments of the rivers Rhine and Main in the Rhine-Main area in Germany were analyzed. The sample locations comprised shore sediment of a large European river (Rhine) and a river characterized by industrial influence (Main) in areas with varying population sizes as well as sites in proximity to nature reserves. All sediments analyzed contained microplastic particles (<5 mm) with mass fractions of up to 1 g kg–1 or 4000 particles kg–1. Analysis of the plastics by infrared spectroscopy showed a large abundance of polyethylene, polypropylene, and polystyrene, which covered more than 75% of all polymer ty...
787 citations
TL;DR: The results indicated that commonly observed polyamide particles can serve as a carrier of antibiotics in the aquatic environment and correlated positively with octanol-water partition coefficients (Log Kow).
719 citations