Evidences of microplastics in aerosols and street dust: a case study of Varanasi City, India

Pandey, Dipika; Banerjee, Tirthankar; Badola, Neha; Chauhan, J. S.

doi:10.1007/s11356-022-21514-1

Cited by 32 publications

(8 citation statements)

References 30 publications

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“…The deposition rate is 2516.63, and 6.49 × 10 6 N/m 2 /d at the fifth and 95th percentiles, respectively. The reported indoor AMP deposition rate in the literature spanned a wide range from 177.3 N/m 2 /d in an apartment in Surabaya, Indonesia to 940,000 N/m 2 /d in a dining room in Wenzhou, China. , In contrast, the maximum reported outdoor AMP deposition rate was only a few thousand. − The median indoor AMP deposition rate in this study is 9.72 × 10 4 N/m 2 /d, indicating a significantly higher level of contamination indoors compared to outdoors. Moreover, the number deposition rates were also converted to mass deposition rates.…”

Section: Resultsmentioning

confidence: 99%

Probabilistic Estimation of Airborne Micro- and Nanoplastic Intake in Humans

Chen,

Meng,

Liu

et al. 2024

Environ. Sci. Technol.

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Little research exists on the magnitude, variability, and uncertainty of human exposure to airborne micro- and nanoplastics (AMNPs), despite their critical role in human exposure to MNPs. We probabilistically estimate the global intake of AMNPs through three main pathways: indoor inhalation, outdoor inhalation, and ingestion during indoor meals, for both children and adults. The median inhalation of AMPs is 1,207.7 (90% CI, 42.5–8.48 × 104) and 1,354.7 (90% CI, 47.4–9.55 × 104) N/capita/day for children and adults, respectively. The annual intake of AMPs is 13.18 mg/capita/a for children and 19.10 mg/capita/a for adults, which is approximately one-fifth and one-third of the mass of a standard stamp, assuming a consistent daily intake of medians. The majority of AMP number intake occurs through inhalation, while the ingestion of deposited AMPs during meals contributes the most in terms of mass. Furthermore, the median ANP intake through outdoor inhalation is 9,638.1 N/day (8.23 × 10–6 μg/d) and 5,410.6 N/day (4.62 × 10–6 μg/d) for children and adults, respectively, compared to 5.30 × 105 N/day (5.79 × 10–4 μg/d) and 6.00 × 105 N/day (6.55 × 10–4 μg/d) via indoor inhalation. Considering the increased toxicity of smaller MNPs, the significant number of ANPs inhaled warrants great attention. Collaborative efforts are imperative to further elucidate and combat the current MPN risks.

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Section: Resultsmentioning

confidence: 99%

Probabilistic Estimation of Airborne Micro- and Nanoplastic Intake in Humans

Chen,

Meng,

Liu

et al. 2024

Environ. Sci. Technol.

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“…When evaluating the number of different pore-size filters used for the same samples collected via active and passive collectors, it is observed that two or three filters were used in sequence for active samplers in five papers [39,40,71,78,80]. On the other hand, according to all the analyzed articles, twelve of them employed a sieve before using the membrane filter [38,47,50,58,60,61,73,77,84,93,95,96], and three used two different pore sizes filtration membranes in passive collectors [44,47,92].…”

Section: Revised Sampling Methodsmentioning

confidence: 99%

Micro- and Nanoplastics in the Atmosphere: Methodology for Microplastics Size-Fractionation Sampling

Logvina,

Matas,

Ribeiro

et al. 2024

Microplastics

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Micro- and nanoplastics (MNPs) are an important atmospheric aerosol constituent. However, there still needs to be a standard procedure for their sampling and size fractionation, which is an obstacle to the aggregation and critical analysis of results obtained by different research groups. This review focuses on the sampling and fractionation methodologies used for MNPs. Moreover, a streamlined, simplified methodology for sampling and fractionation is proposed.

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“…The elemental analysis of all samples shows that they are dominated by carbon and oxygen, indicating that they are plastics. Both inorganic compounds are the basic unit of fossil fuels, which plastic are made out of (Pandey et al, 2022). It is common to observe high composition of carbon and oxygen (Girão, 2020) and the presence of inorganic compounds such as Al, Ca, bromine (Br), and sulphur (S) (EFSA CONTAM Panel, 2016; Campanale et al, 2020) in the EDX spectrum of MPs.…”

Section: Field Emission Scanning Electron Microscope-energy Dispersiv...mentioning

confidence: 99%

Abundance and distribution of microplastics in tropical estuarine mangrove areas around Penang, Malaysia

Tan

Zanuri

2023

Front. Mar. Sci.

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IntroductionThis study reports the abundance and distribution of microplastics in tropical estuarine mangrove areas in Penang, Malaysia.MethodsSamples were collected by using a neuston net and Ponar grab at four study sites (Seberang Perai, Kuala Muda, Penaga and Balik Pulau).Results and DiscussionA total of 8775 pieces were collected from the four sites, with abundance in coastal surface water, coastal bottom sediment, and estuarine sediment ranging between 201 ± 21.214 - 1407 ± 124.265 pcs/L, 255 ± 22.368 - 350 ± 25.892 pcs/kg, and 430 ± 7.234 - 4000 ± 29.174 pcs/kg respectively. Seberang Perai was found with the highest microplastics abundance in all compartments while fragment is the dominant morphology throughout all study sites. Stereomicroscopic analysis showed that microplastics are of numerous colours and irregular in shape while Field Emission Scanning Electron Microscope (FESEM) observed severe surficial weathering. Polyethylene is the most common identified polymer type via Fourier Transform Infrared Spectroscopy (FTIR) analysis and inorganic chemical compounds such as dimethylmercury were detected which pose a threat to organisms and the environment. The overall outcome suggests that human activities play a significant role in microplastic input into the estuarine environment and that the dominant polymer type in respective study site are closely related to the nature of human activities. This baseline study presents fundamental knowledge on microplastic pollution in the estuarine environment of Penang and encourages similar research to be conducted in the future for pollution control and management.

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Evidences of microplastics in aerosols and street dust: a case study of Varanasi City, India

Cited by 32 publications

References 30 publications

Probabilistic Estimation of Airborne Micro- and Nanoplastic Intake in Humans

Probabilistic Estimation of Airborne Micro- and Nanoplastic Intake in Humans

Micro- and Nanoplastics in the Atmosphere: Methodology for Microplastics Size-Fractionation Sampling

Abundance and distribution of microplastics in tropical estuarine mangrove areas around Penang, Malaysia

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