An investigation of potentially toxic element content in beached plastic resin pellets from Kuwait and the United Kingdom

Research output: Contribution to conferenceAbstract

Abstract

Plastic is the dominant form of debris in the marine environment, with microplastics of particular concern due to their wide distribution and impact. Microplastics contain catalyst residues and additives such as plasticisers and fillers. They can absorb hydrophobic persistent organic pollutants (POPs) from the surrounding environment. Recent evidence indicates they can also be a vector for potentially toxic elements (PTE).

Plastic resin pellets were collected from the foreshore at Limekilns, Scotland, UK and from Shuwaikh Port, Kuwait. They were air-dried, sieved, rinsed with deionised water and then classified using FTIR analysis. Examples of each type of plastic pellet were subjected to a two-step extraction procedure: cold leaching for 24 h in 20% aqua regia followed by microwave-assisted digestion in nitric acid. Aluminium, As, Ca, Cd, Cr, Fe, Mn, Na, Pb, V, and Zn were measured in the extracts by ICP-MS using an Agilent 7700x instrument.

Pellets collected from Limekilns were 68% polyethylene and 32% polypropylene, while samples from Kuwait were 45% polyethylene and 45% polypropylene. Analyte concentrations were higher in polyethylene than in polypropylene pellets at both locations, and concentrations of Al, As, Cr, Ni, and V are significantly higher in Kuwait than in the UK samples. Larger amounts of PTE were released in the first step of the extraction than in the second step, except for Ca, Mg and Na. The latter were also detected in virgin pellets, suggesting they were incorporated during pellet manufacture rather than sorbed from the marine environment.

Conference

ConferenceBNASS 2016: The 18th Biennial National Atomic Spectroscopy Symposium
CountryUnited Kingdom
CityLiverpool
Period4/07/166/07/16

Fingerprint

Polypropylenes
Poisons
Polyethylene
Resins
Plastics
Nitric Acid
Plasticizers
Organic pollutants
Deionized water
Aluminum
Debris
Leaching
Fillers
Microwaves
Catalysts
Air

Keywords

  • marine debris
  • plastic resin
  • plastic toxicity

Cite this

Mandekar, B. E. A., Davidson, C., Switzer, C., & Liggat, J. (2016). An investigation of potentially toxic element content in beached plastic resin pellets from Kuwait and the United Kingdom. Abstract from BNASS 2016: The 18th Biennial National Atomic Spectroscopy Symposium, Liverpool, United Kingdom.
Mandekar, Bedraya E A ; Davidson, Christine ; Switzer, Christine ; Liggat, John. / An investigation of potentially toxic element content in beached plastic resin pellets from Kuwait and the United Kingdom. Abstract from BNASS 2016: The 18th Biennial National Atomic Spectroscopy Symposium, Liverpool, United Kingdom.
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abstract = "Plastic is the dominant form of debris in the marine environment, with microplastics of particular concern due to their wide distribution and impact. Microplastics contain catalyst residues and additives such as plasticisers and fillers. They can absorb hydrophobic persistent organic pollutants (POPs) from the surrounding environment. Recent evidence indicates they can also be a vector for potentially toxic elements (PTE).Plastic resin pellets were collected from the foreshore at Limekilns, Scotland, UK and from Shuwaikh Port, Kuwait. They were air-dried, sieved, rinsed with deionised water and then classified using FTIR analysis. Examples of each type of plastic pellet were subjected to a two-step extraction procedure: cold leaching for 24 h in 20{\%} aqua regia followed by microwave-assisted digestion in nitric acid. Aluminium, As, Ca, Cd, Cr, Fe, Mn, Na, Pb, V, and Zn were measured in the extracts by ICP-MS using an Agilent 7700x instrument. Pellets collected from Limekilns were 68{\%} polyethylene and 32{\%} polypropylene, while samples from Kuwait were 45{\%} polyethylene and 45{\%} polypropylene. Analyte concentrations were higher in polyethylene than in polypropylene pellets at both locations, and concentrations of Al, As, Cr, Ni, and V are significantly higher in Kuwait than in the UK samples. Larger amounts of PTE were released in the first step of the extraction than in the second step, except for Ca, Mg and Na. The latter were also detected in virgin pellets, suggesting they were incorporated during pellet manufacture rather than sorbed from the marine environment.",
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Mandekar, BEA, Davidson, C, Switzer, C & Liggat, J 2016, 'An investigation of potentially toxic element content in beached plastic resin pellets from Kuwait and the United Kingdom' BNASS 2016: The 18th Biennial National Atomic Spectroscopy Symposium, Liverpool, United Kingdom, 4/07/16 - 6/07/16, .

An investigation of potentially toxic element content in beached plastic resin pellets from Kuwait and the United Kingdom. / Mandekar, Bedraya E A; Davidson, Christine; Switzer, Christine; Liggat, John.

2016. Abstract from BNASS 2016: The 18th Biennial National Atomic Spectroscopy Symposium, Liverpool, United Kingdom.

Research output: Contribution to conferenceAbstract

TY - CONF

T1 - An investigation of potentially toxic element content in beached plastic resin pellets from Kuwait and the United Kingdom

AU - Mandekar, Bedraya E A

AU - Davidson, Christine

AU - Switzer, Christine

AU - Liggat, John

PY - 2016/5/5

Y1 - 2016/5/5

N2 - Plastic is the dominant form of debris in the marine environment, with microplastics of particular concern due to their wide distribution and impact. Microplastics contain catalyst residues and additives such as plasticisers and fillers. They can absorb hydrophobic persistent organic pollutants (POPs) from the surrounding environment. Recent evidence indicates they can also be a vector for potentially toxic elements (PTE).Plastic resin pellets were collected from the foreshore at Limekilns, Scotland, UK and from Shuwaikh Port, Kuwait. They were air-dried, sieved, rinsed with deionised water and then classified using FTIR analysis. Examples of each type of plastic pellet were subjected to a two-step extraction procedure: cold leaching for 24 h in 20% aqua regia followed by microwave-assisted digestion in nitric acid. Aluminium, As, Ca, Cd, Cr, Fe, Mn, Na, Pb, V, and Zn were measured in the extracts by ICP-MS using an Agilent 7700x instrument. Pellets collected from Limekilns were 68% polyethylene and 32% polypropylene, while samples from Kuwait were 45% polyethylene and 45% polypropylene. Analyte concentrations were higher in polyethylene than in polypropylene pellets at both locations, and concentrations of Al, As, Cr, Ni, and V are significantly higher in Kuwait than in the UK samples. Larger amounts of PTE were released in the first step of the extraction than in the second step, except for Ca, Mg and Na. The latter were also detected in virgin pellets, suggesting they were incorporated during pellet manufacture rather than sorbed from the marine environment.

AB - Plastic is the dominant form of debris in the marine environment, with microplastics of particular concern due to their wide distribution and impact. Microplastics contain catalyst residues and additives such as plasticisers and fillers. They can absorb hydrophobic persistent organic pollutants (POPs) from the surrounding environment. Recent evidence indicates they can also be a vector for potentially toxic elements (PTE).Plastic resin pellets were collected from the foreshore at Limekilns, Scotland, UK and from Shuwaikh Port, Kuwait. They were air-dried, sieved, rinsed with deionised water and then classified using FTIR analysis. Examples of each type of plastic pellet were subjected to a two-step extraction procedure: cold leaching for 24 h in 20% aqua regia followed by microwave-assisted digestion in nitric acid. Aluminium, As, Ca, Cd, Cr, Fe, Mn, Na, Pb, V, and Zn were measured in the extracts by ICP-MS using an Agilent 7700x instrument. Pellets collected from Limekilns were 68% polyethylene and 32% polypropylene, while samples from Kuwait were 45% polyethylene and 45% polypropylene. Analyte concentrations were higher in polyethylene than in polypropylene pellets at both locations, and concentrations of Al, As, Cr, Ni, and V are significantly higher in Kuwait than in the UK samples. Larger amounts of PTE were released in the first step of the extraction than in the second step, except for Ca, Mg and Na. The latter were also detected in virgin pellets, suggesting they were incorporated during pellet manufacture rather than sorbed from the marine environment.

KW - marine debris

KW - plastic resin

KW - plastic toxicity

UR - http://www.rsc.org/events/detail/19910/bnass-2016-the-18th-biennial-national-atomic-spectroscopy-symposium

M3 - Abstract

ER -

Mandekar BEA, Davidson C, Switzer C, Liggat J. An investigation of potentially toxic element content in beached plastic resin pellets from Kuwait and the United Kingdom. 2016. Abstract from BNASS 2016: The 18th Biennial National Atomic Spectroscopy Symposium, Liverpool, United Kingdom.