Occurrence and spatial distribution of microplastics in beach sediments of Cox's Bazar, Bangladesh

Rahman, Shahriar Md. Arifur; Robin, Gulam Saruar; Momotaj, Mahila; Uddin, Jamir; Siddique, Mohammad Abdul Momin

doi:10.1016/j.marpolbul.2020.111587

Cited by 88 publications

(29 citation statements)

References 58 publications

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“…However, the improper management of plastic waste and its environmental persistence has resulted in the accumulation of plastics in many environments [ 2 , 3 ]. Plastic debris and particularly microplastics (herein referred to as MP; plastics smaller than 5 mm) are considered ubiquitous pollutants and have been reported in water, soil, air, living organisms [ 4 , 5 ], as well as in processed food and drinking water [ 6 ]. Therefore, human exposure to MPs is inevitable, and it is imperative to determine their impacts on human health.…”

Section: Introductionmentioning

confidence: 99%

Investigating the current status of COVID-19 related plastics and their potential impact on human health

De-la-Torre

Pizarro-Ortega

Dioses-Salinas

et al. 2021

Current Opinion in Toxicology

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The COVID-19 pandemic led to a sudden global increase in the production, consumption, and mismanagement of personal protective equipment (PPE). As plastic-based PPE such as disposable face masks and gloves have become widely used, human exposure to PPE-derived pollutants may occur through indirect and direct pathways. This review explores the potential health impacts related to plastic-based PPE through these pathways. Face masks release microplastics, which are directly inhaled during use or transported through the environment. The latter can adsorb chemical contaminants and harbor pathogenic microbiota, and once consumed by organisms, they can translocate to multiple organs upon intake, potentially causing detrimental and cytotoxic effects. However, more research is required to have a comprehensive overview of the human health effects.

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Section: Introductionmentioning

confidence: 99%

Investigating the current status of COVID-19 related plastics and their potential impact on human health

De-la-Torre

Pizarro-Ortega

Dioses-Salinas

et al. 2021

Current Opinion in Toxicology

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“…With strong historical antecedents and natural endowments, some places in the region, i.e., CHTs, Cox's Bazar, Saint Martin Island, etc. have grown the most popular tourist destinations in the country nowadays (Rahman et al 2020). Further, many infrastructural undertakings and megaprojects, e.g., Karnaphuli underwater tunnel, Chittagong-Cox's Bazar railway link, Moheshkhali LNG terminal, Matarbari power plant, etc.…”

Section: Introductionmentioning

confidence: 99%

Climate change projection using statistical downscaling model over Chittagong Division, Bangladesh

Shahriar

Siddique

Rahman

2021

Meteorol Atmos Phys

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Countries around the world have already been experiencing the repercussions of climate change. Bangladesh is cited as one of the most vulnerable countries among them. Due to the utmost contribution to the country's economy and continuous exposure to climatic extremes, climate change scenarios for the largest division in the country, the Chittagong Division, have a major concern. This study analyzed the potential climatic changes by the downscaling approach for the Chittagong Division under Representative Concentration Pathways (RCPs) i.e., RCP 2.5, RCP 4.5 and RCP 8.5, and Special Report on Emission Scenarios (SRES) i.e., A2, A1B, and B2 scenarios. Statistical Downscaling Model (SDSM) was used for downscaling three General Circulation Models (GCMs) viz. HadCM3, CanESM2, and CGCM3. A quantitative approach was used for both calibration and validation, where the results indicated the suitability of SDSM for downscaling daily mean temperature and precipitation under different scenarios for three future time horizons, i.e., early-twenty-first, mid-twenty-first, and latetwenty-first century. Additionally, bias correction was applied to downscaled climate variables. The downscaled projection showed increasing trends in mean annual temperature and precipitation for all the scenarios by the end of the century. Under CanESM2, the highest increase in temperature and precipitation were projected as 1.1 °C and 1.7 mm for the RCP 8.5. On the other hand, the highest increase in temperature and precipitation were projected as 0.5 °C and 1.4 mm for the SRES scenario A2 under CGCM3 and HadCM3. The spatial distribution of projections shows that the southern coastal part of the division is marked by remarkable future changes. The downscaled pathways have set a basis for assessing the impacts of future climate change on different sectors for the Chittagong Division and other areas in the country.

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“…Although there are no previous studies of MP abundance in salt samples, other studies have been conducted in the coastal zone of the Bay of Bengal adjacent to Bangladesh. A study conducted by Rahman et al 24 in beach sediments from Cox's Bazar beach registered relatively low MP values of 8.1 ± 2.9 particles kg −1 while, in a study of intertidal sediments from the same area by Hossain et al 25 , higher MP values of 368.68 ± 10.65 particles kg −1 were reported. Both studies attributed their spatial MP variation to be due to the tidal current, wave energy, beach orientation, river discharges, and human activity.…”

Section: Resultsmentioning

confidence: 91%

Microplastics pollution in salt pans from the Maheshkhali Channel, Bangladesh

Rakib

Nahian

Alfonso

et al. 2021

Sci Rep

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Microplastics (MP) were recognized as an emergent pollution problem due to their ubiquitous nature and bioaccumulative potential. Those present in salt for consumption could represent a human exposure route through dietary uptake. The current study, conducted in Bangladesh, reports microplastics contamination in coarse salt prepared for human consumption. Sea salt samples were collected from eight representative salt pans located in the country's largest salt farming area, in the Maheshkhali Channel, along the Bay of Bengal. Microplastics were detected in all samples, with mean concentrations ranging from 78 ± 9.33 to 137 ± 21.70 particles kg−1, mostly white and ranging in size from 500–1000 µm. The prevalent types were: fragments (48%) > films (22%) > fibers (15%) > granules and lines (both 9%). Fourier transform mid-IR and near-IR spectra (FT-MIR-NIR) analysis registered terephthalate (48%), polypropylene (20%), polyethylene (17%), and polystyrene (15%) in all samples. These results contribute to the MP's pollution knowledge in sea salts to understand and reduce this significant human exposure route and environmental pollution source in the future.

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Occurrence and spatial distribution of microplastics in beach sediments of Cox's Bazar, Bangladesh

Cited by 88 publications

References 58 publications

Investigating the current status of COVID-19 related plastics and their potential impact on human health

Investigating the current status of COVID-19 related plastics and their potential impact on human health

Climate change projection using statistical downscaling model over Chittagong Division, Bangladesh

Microplastics pollution in salt pans from the Maheshkhali Channel, Bangladesh

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