Human footprints at hadal depths: interlayer and intralayer comparison of sediment cores from the Kuril Kamchatka trench

Abel, Serena M.; Primpke, Sebastian; Wu, Fangzhu; Brandt, Angelika; Gerdts, Gunnar

doi:10.1016/j.scitotenv.2022.156035

Cited by 14 publications

(3 citation statements)

References 96 publications

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“…Similarly, the abundance of MPs/NPs in sediments includes different representations per unit weight (units/kg) and unit area (units/m 2 ) [ 178 ], while weight also includes dry and wet weights. In addition, the inconsistency of research methods also affects the reliability of the obtained data and the horizontal comparison of these data; this problem is more prominent in the research on air MPs/NPs that started later [ 12 , 179 ].…”

Section: Discussionmentioning

confidence: 99%

Nanoplastics and Microplastics May Be Damaging Our Livers

Yin

Qian

et al. 2022

Toxics

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Plastics in the environment can be degraded and even broken into pieces under the action of natural factors, and the degraded products with a particle size of less than 5 mm are called microplastics (MPs). MPs exist in a variety of environmental media that come into contact with the human body. It can enter the body through environmental media and food chains. At present, there are many studies investigating the damage of MPs to marine organisms and mammals. The liver is the largest metabolizing organ and plays an important role in the metabolism of MPs in the body. However, there is no available systematic review on the toxic effects of MPs on the liver. This paper summarizes the adverse effects and mechanisms of MPs on the liver, by searching the literature and highlighting the studies that have been published to date, and provides a scenario for the liver toxicity caused by MPs.

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Section: Discussionmentioning

confidence: 99%

Nanoplastics and Microplastics May Be Damaging Our Livers

Yin

Qian

et al. 2022

Toxics

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“…To extract potential microplastics, a protocol inspired by Mani et al 20 was used, relying on oxidative sample digestion via Fenton’s reaction followed by density separation and overflow using saturated NaBr solution. 35 Samples were dried using a vacuum drier at 60 °C for 72 h. For digestion 10 g of sample were transferred into 250 mL Erlenmeyer flasks. Then 15 mL FeSO 4 (20 mg mL –1 , pH = 3) were added and the flasks placed in a water bath at room temperature.…”

Section: Methodsmentioning

confidence: 99%

Microplastics in the Water Column of the Rhine River Near Basel: 22 Months of Sampling

Erni-Cassola,

Dolf,

Burkhardt-Holm

2024

Environ. Sci. Technol.

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Measured microplastic concentrations in river surface waters fluctuate greatly. This variability is affected by season and is codriven by factors, such as sampling methodologies, sampling site, or sampling position within site. Unfortunately, most studies comprise single-instance measurements, whereas extended sampling periods are better suited to assessing the relevance of such factors. Moreover, microplastic concentrations in riverine water column remain underexplored. Similar to the oceans, however, this compartment likely holds significant amounts of microplastics. By representatively sampling the entire Rhine River cross-section near Basel through five sampling points over 22 months, we found a median microplastic (50−3000 μm) concentration of 4.48 n m −3 , and estimated a widely ranging load between 4.04 × 10 2 n s −1 and 3.57 × 10 5 n s −1 . We also show that the microplastic concentration in the water column was not well explained by river discharge. This suggests that although high discharge events as observed here can over short time periods lead to peak microplastic concentrations (e.g., 1.23 × 10 2 n m −3 ), microplastic load variance was not dominated by discharge in the study area.

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“…For example, the ocean is the destination of plastic waste generated on land and transported via rivers or coastlines (Jambeck Jenna et al, 2015). Furthermore, microplastics are also found in deep-sea sediment cores, such as the Rockall Trough, North Atlantic Ocean (Abel et al, 2022), and the Kuril Kamchatka Trench, Pacific Ocean (Abel et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Preliminary study on microplastic abundance in mangrove sediment cores at Mae Klong River, upper Gulf of Thailand

Chaisanguansuk

Phantuwongraj

Jirapinyakul

et al. 2023

Front. Environ. Sci.

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Microplastics have polluted our environment, particularly mangrove ecosystems, the barriers between land and sea that trap sediments and pollutants. The abundance of microplastics has increased in microplastic deposition and is expected to rise in the future. In this study, mangrove sediment cores were collected from the Mae Klong River mouth and Queen Sirikit Park (shoreline), Samut Songkhram province. The microplastics were analyzed using a modified flotation method, then recasted and removed organic matter. Fiber microplastics is composed of 92% and 82% of the total microplastics that found in the Mae Klong River mouth and Queen Sirikit Park, respectively. There were significant changes in the abundance of microplastics in relation to the sediment particle size (p < 0.05). The difference in location between the Queen Sirikit Park and Mae Klong River mouth sites was significant (p < 0.01). The accumulation of microplastics in the sediments was influenced by grain size and location. The polymer types of microplastics were those normally used in textiles, indicating human activity. Moreover, micro-Fourier transform infrared (µ-FTIR) spectroscopy analysis identified compounds of other small particles, including tire rubber, pigment, paint, dyes, and flame retardant. These results imply that microplastics and microparticles have polluted the mangrove sediment in the Mae Klong River basin, which is an important fishery area in the upper Gulf of Thailand.

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Human footprints at hadal depths: interlayer and intralayer comparison of sediment cores from the Kuril Kamchatka trench

Cited by 14 publications

References 96 publications

Nanoplastics and Microplastics May Be Damaging Our Livers

Nanoplastics and Microplastics May Be Damaging Our Livers

Microplastics in the Water Column of the Rhine River Near Basel: 22 Months of Sampling

Preliminary study on microplastic abundance in mangrove sediment cores at Mae Klong River, upper Gulf of Thailand

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