Distribution and characterization of microplastics in beach sand from three different Indian coastal environments

Tiwari, Mahavir Prasad; Rathod, T.D.; Ajmal, P.Y.; Bhangare, R.C.; Sahu, S. K.

doi:10.1016/j.marpolbul.2019.01.055

Cited by 354 publications

(93 citation statements)

References 58 publications

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“…In the particle size distribution of microplastics (Figure ), the proportion of microplastics with different particle size ranges in the three samples was in the order of 10 to 15 μm > 20 to 25 μm > 15 to 20 μm > 5 to 10 μm = 0 to 5 μm. With the increase in the particle size, the content of microplastics in the three samples first increased and then decreased, which is inconsistent with the results of most studies involving the increase of microplastic particle size . This may be because the microplastic particle size distribution in other studies is generally larger than 50 μm, while the particle size of microplastics in this study was smaller.…”

Section: Resultscontrasting

confidence: 99%

“…With the increase in the particle size, the content of microplastics in the three samples first increased and then decreased, which is inconsistent with the results of most studies involving the increase of microplastic particle size. [32][33][34][35][36] This may be because the microplastic particle size distribution in other studies is generally larger than 50 μm, while the particle size of microplastics in this study was smaller. The results indicate that the plastic waste in the soil is under the external influence of high temperature oxidation, ultraviolet radiation, physical erosion, and so on.…”

Section: F I G U R E 1 Positive Ion Spectrum Obtained From Xa1mentioning

confidence: 99%

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ToF‐SIMS characterization of microplastics in soils

Gong

et al. 2020

Surface & Interface Analysis

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Microplastics pollution is becoming one of the most serious threats to the surface ecosystem of the earth; it is widespread in oceans, rivers, sediments, soils, and organisms. It is a growing concern as an environmental pollutant, which currently has no clear detection standard. Detection methods still need to be constantly supplemented and improved. This study explored a novel method called time‐of‐flight secondary ion mass spectrometry (ToF‐SIMS) in this field. Four types of microplastics in farmland soils, namely, polypropylene, polyvinyl chloride, polyethylene terephthalate, and polyamide 6, were successfully identified in terms of particle size and abundance by combining the high molecular specificity with ion imaging capability of ToF‐SIMS. The procedure based on ToF‐SIMS analysis also provides a methodological reference and basic data for the investigation and research of microplastics in soil, coastal beaches, and sediment.

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Section: Resultscontrasting

confidence: 99%

Section: F I G U R E 1 Positive Ion Spectrum Obtained From Xa1mentioning

confidence: 99%

ToF‐SIMS characterization of microplastics in soils

Gong

et al. 2020

Surface & Interface Analysis

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“…A similar range of concentrations (6870 ± 6140 items kg − 1 d.w.; min-max: 5014-8714 items kg − 1 d.w.) to our study (9238 ± 2097 items kg − 1 d.w.) was observed in beach sediments from the Beibu Gulf and the coast of the South China Sea (Qiu et al, 2015), located nearby human activities, despite that the range of MPs observation was broader than the one of our study (Table 2). In surface beach sediment from India, lower microplastic concentrations than in Da Nang were measured despite that the beaches were impacted by different anthropogenic activities like an urban area (Mumbai, 220 ± 50 items kg − 1 d.w.), port and industrial areas (Tuticorin, 181 ± 60 items kg − 1 d.w.), and tourism and fishing areas (Dhanushkodi, 45 ± 12 items kg − 1 d.w.) (Tiwari et al, 2019) or Canacona city (520 items kg − 1 d.w.; Balasubramaniam and Phillott, 2016). The MPs concentrations measured in other Asian beaches from Indonesia, Myanmar, Pakistan, Sri Lanka, Singapore, Japan, and Dubai were also one order of magnitude lower than the ones in Da Nang, despite again that the range of MPs observation was broader than our (Balasubramaniam and Phillott, 2016;Nor and Obbard, 2014;Ng and observations were made in other beaches from other continents like in Argentina (46.0 ± 34.8 -Colin et al, 2018).…”

Section: Comparison Of Microplastic Concentrations To Worldwide Beachmentioning

confidence: 99%

Characteristics of microplastics in shoreline sediments from a tropical and urbanized beach (Da Nang, Vietnam)

Nguyen

Strady

et al. 2020

Marine Pollution Bulletin

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Microplastics in shoreline sediments were investigated from Da Nang beach for the first time. Sediment samples at the two depth strata (0-5 cm and 5-10 cm) at eight sites along the entire coast were collected for identifying the characteristics of microplastics, including their concentration, size, shape, color, and nature. The synthetic fiber was the predominant type of microplastics, accounting for 99.2% of the total items. Blue (59.9%) and white (22.9%) were the most common colors of the fibers. Synthetic fibers showed a homogenous distribution at all sampling sites with a mean concentration of 9238 ± 2097 items kg − 1 d.w. Meanwhile, the fibers tended to concentrate much more at the surface stratum than the deeper stratum. A large number of synthetic fibers (81.9%) were in the size range of 300-2600 μm, which might pose a threat to marine biota and human health.

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“…Through decades of agricultural activities, a large number of MPs with smaller particle sizes have accumulated in the region. Plastic products in soil are easier to decompose into MPs with smaller particle size under the effects of agricultural activities, ultraviolet radiation, and microbial decomposition [37][38][39]. However, the MPs at XA2, XA3, XA4, and XA11 were mainly larger than 20 µm.…”

Section: Type Particle Size Abundance and Distribution Of Mpsmentioning

confidence: 99%

Pollution Characteristics of Microplastics in Soils in Southeastern Suburbs of Baoding City, China

Liang

et al. 2020

IJERPH

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Microplastics (MPs) are emerging pollutants that exist in different environmental media. Because of their wide range and large potential environmental hazards, they have attracted widespread attention in recent years. At present, the research on MP is mostly concentrated on the water ecosystems, and the impact on soil ecosystems is less studied. In this study, 12 typical soil samples from southeastern suburbs of Baoding city were investigated and characterized by time-of-flight secondary ion mass spectrometry (TOF-SIMS) combined with mass high resolution mode and positive and negative ion imaging mode. Four types of MPs, poly (propylene) (PP), poly (vinyl chloride) (PVC), poly (ethylene terephthalate) (PET), and poly (amide 6) (PA6), were quickly identified, of which PET and PA6 accounted for the largest proportion of both up to 30.2%; the particle size of the obtained MPs ranged from 0 to 35 μm, of which the proportion of <10 μm MPs was more than 26.3%, while that of 20–25 μm and 25–35 μm MPs was relatively small (17.83% and 9.3%, respectively). Risk assessment results of the MP in the soil showed that the risk level of MPs in the non-ferrous metal industrial parks and in concentrated with small workshops areas is relatively high, and attention should be paid to such areas. In addition, the study provides a reference method for the investigation and risk assessment of MPs in terrestrial soils, coastal beaches, and sediments.

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Distribution and characterization of microplastics in beach sand from three different Indian coastal environments

Cited by 354 publications

References 58 publications

ToF‐SIMS characterization of microplastics in soils

ToF‐SIMS characterization of microplastics in soils

Characteristics of microplastics in shoreline sediments from a tropical and urbanized beach (Da Nang, Vietnam)

Pollution Characteristics of Microplastics in Soils in Southeastern Suburbs of Baoding City, China

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