The chemical behaviors of microplastics in marine environment: A review

Guo, Xuan; Wang, Jianlong

doi:10.1016/j.marpolbul.2019.03.019

Cited by 469 publications

(187 citation statements)

References 137 publications

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“…Microplastics have been demonstrated to act as vectors for pollution exposure to marine species [75] and these mechanisms and effects can extend to early life stages. For example, studies exposing the oyster Crassostrea gigas to microplastics have identified cellular impacts on spermatozoa, and a dose-dependent increase in reactive oxygen species production in spermatozoa after acute (up to 5 h) exposure to polystyrene nanoparticles coated with carboxylic groups [76].…”

Section: Discussionmentioning

confidence: 99%

Microplastic Contamination Has Limited Effects on Coral Fertilisation and Larvae

et al. 2019

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Microplastics are ubiquitous throughout the world’s oceans and contaminate coral reef ecosystems. There is evidence of microplastic ingestion by corals and passive contact with coral tissues, causing adverse health effects that include energy expenditure for particle removal from the tissue surface, as well as reduced growth, tissue bleaching, and necrosis. Here, it was examined whether microplastic contamination impairs the success of gamete fertilisation, embryo development and larval settlement of the reef-building coral Acropora tenuis. Coral gametes and larvae were exposed to fifteen microplastic treatments using two types of plastic: (1) weathered polypropylene particles and (2) spherical polyethylene microbeads. The treatments ranged from five to 50 polypropylene pieces L−1 and 25 to 200 microbeads L−1. Fertilisation was only negatively affected by the largest weathered microplastics (2 mm2), but the effects were not dose dependent. Embryo development and larval settlement were not significantly impacted by either microplastic type. The study shows that moderate–high levels of marine microplastic contamination, specifically particles <2 mm2, will not substantially interfere with the success of critical early life coral processes.

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Section: Discussionmentioning

confidence: 99%

Microplastic Contamination Has Limited Effects on Coral Fertilisation and Larvae

et al. 2019

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“…Microplastics are found in commonly manufactured, commercial products such as personal care and cosmetic products or microplastic particles produce from in-situ environmental degradation and subsequent fragmentation of larger size plastics by physical, chemical, and biological processes ( Browne et al., 2010 ; Wang et al., 2018 ). Microplastics are mostly abundant in marine and coastal systems, while synthetic pollutants chemically interact with organic pollutants and metals ( Guo and Wang, 2019a ). The density of microplastics also affects the distribution of microplastics in the water column.…”

Section: Introductionmentioning

confidence: 99%

Plastic pollution in the marine environment

Thushari

Senevirathna

2020

Heliyon

487

139

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Plastic pollution is recognized as a severe anthropogenic issue in the coastal and marine ecosystems across the world. Unprecedented and continuous accumulation of growing plastic contaminants into any respective aquatic ecosystem by the anthropogenic sources causes direct and/or indirect interruption to ecosystem structure, functions, and consequently, services and values. Land-based and sea-based sources are the primary sources of these contaminants in various modes that enter the ocean. In this review paper, we focused on highlighting different aspects related to plastic pollution in coastal and marine environments. Plastic pollutants are distributed in the ecosystems in different forms, with different size variations as megaplastic, macroplastic, mesoplastic, and microplastic. Microplastics in primary and secondary forms reveal a widespread distribution in the water, sediment, and biota of the marine and coastal habitats. The microplastic level of different coastal and marine ecosystems nearly ranged from 0.001-140 particles/m 3 in water and 0.2-8766 particles/m 3 in sediments at different aquatic environments over the world. The microplastic accumulation rate of coastal and marine organisms varied at 0.1-15,033 counts. Accordingly, plastic pollution creates several kinds of negative consequences combined with ecological and socio-economic effects. Entanglement, toxicological effects via ingestion of plastics, suffocation, starvation, dispersal, and rafting of organisms, provision of new habitats, and introduction of invasive species are significant ecological effects with growing threats to biodiversity and trophic relationships. Degradation (changes in the ecosystem state) and modifications of marine systems are associated with loss of ecosystem services and values. Consequently, this emerging contaminant affects the socio-economic aspects through negative impacts on tourism, fishery, shipping, and human health. Preventing accumulation sources of plastic pollutants, 3Rs (Reduce-Recycle-Reuse), awareness & capacity building, and producer/manufacturer responsibility are practical approaches toward addressing the issue of plastic pollution. Existing and adopted policies, legislations, regulations, and initiatives at global, regional, and national level play a vital role in reducing plastic debris in the marine and coastal zones. Development of proposals/solutions on key research gaps can open a novel pathway to address this environmental issue in an effective scientific manner. In conclusion, this paper demonstrates the current status of plastic pollution in the marine ecosystem to make aware people of a plastic-free, healthy blue ocean in the near future.

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“…Though polymers were considered to be inert towards metals in the past [97], great attention has recently been paid to better understanding the interaction between heavy metals and microplastics [98][99][100][101][102][103][104][105][106][107][108].…”

Section: Heavy Metalsmentioning

confidence: 99%

A Detailed Review Study on Potential Effects of Microplastics and Additives of Concern on Human Health

Campanale

Massarelli

Savino

et al. 2020

IJERPH

1,076

451

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The distribution and abundance of microplastics into the world are so extensive that many scientists use them as key indicators of the recent and contemporary period defining a new historical epoch: The Plasticene. However, the implications of microplastics are not yet thoroughly understood. There is considerable complexity involved to understand their impact due to different physical–chemical properties that make microplastics multifaceted stressors. If, on the one hand, microplastics carry toxic chemicals in the ecosystems, thus serving as vectors of transport, they are themselves, on the other hand, a cocktail of hazardous chemicals that are added voluntarily during their production as additives to increase polymer properties and prolong their life. To date, there is a considerable lack of knowledge on the major additives of concern that are used in the plastic industry, on their fate once microplastics dispose into the environment, and on their consequent effects on human health when associated with micro and nanoplastics. The present study emphasizes the most toxic and dangerous chemical substances that are contained in all plastic products to describe the effects and implications of these hazardous chemicals on human health, providing a detailed overview of studies that have investigated their abundance on microplastics. In the present work, we conducted a capillary review of the literature on micro and nanoplastic exposure pathways and their potential risk to human health to summarize current knowledge with the intention of better focus future research in this area and fill knowledge gaps.

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The chemical behaviors of microplastics in marine environment: A review

Cited by 469 publications

References 137 publications

Microplastic Contamination Has Limited Effects on Coral Fertilisation and Larvae

Microplastic Contamination Has Limited Effects on Coral Fertilisation and Larvae

Plastic pollution in the marine environment

A Detailed Review Study on Potential Effects of Microplastics and Additives of Concern on Human Health

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