{"id":31936,"date":"2014-03-21T15:44:00","date_gmt":"2014-03-21T13:44:00","guid":{"rendered":"https:\/\/oneearth-oneocean.com\/2014\/03\/21\/transport-of-persistent-organic-pollutants-by-microplastics-in-estuarine-conditions\/"},"modified":"2014-03-21T15:44:00","modified_gmt":"2014-03-21T13:44:00","slug":"transport-of-persistent-organic-pollutants-by-microplastics-in-estuarine-conditions","status":"publish","type":"post","link":"https:\/\/oneearth-oneocean.com\/en\/research-en\/2014\/transport-of-persistent-organic-pollutants-by-microplastics-in-estuarine-conditions\/","title":{"rendered":"Transport of persistent organic pollutants by microplastics in estuarine conditions"},"content":{"rendered":"
Adil Bakir, Steven J. Rowland, Richard C. Thompson, Transport of\npersistent organic pollutants by microplastics in estuarine conditions,\nEstuarine, Coastal and Shelf Science, Volume 140, 1 March 2014, Pages\n14-21, ISSN 0272-7714, http:\/\/dx.doi.org\/10.1016\/j.ecss.2014.01.004<\/a>.\n(http:\/\/www.sciencedirect.com\/science\/article\/pii\/S0272771414000110<\/a>)\nAbstract: Microplastics represent an increasing source of anthropogenic\ncontamination in aquatic environments, where they may also act as\nscavengers and transporters of persistent organic pollutants. As\nestuaries are amongst the most productive aquatic systems, it is\nimportant to understand sorption behaviour and transport of persistent\norganic pollutants (POPs) by microplastics along estuarine gradients.\nThe effects of salinity sorption equilibrium kinetics on the\ndistribution coefficients (Kd) of phenanthrene (Phe) and 4,4&prime;-DDT, onto\npolyvinyl chloride (PVC) and onto polyethylene (PE) were therefore\ninvestigated. A salinity gradient representing freshwater, estuarine and\nmarine conditions, with salinities corresponding to 0 (MilliQ water, 690\n&mu;S\/cm), 8.8, 17.5, 26.3 and 35 was used. Salinity had no significant\neffect on the time required to reach equilibrium onto PVC or PE and\nneither did it affect desorption rates of contaminants from plastics.\nAlthough salinity had no effect on sorption capacity of Phe onto\nplastics, a slight decrease in sorption capacity was observed for DDT\nwith salinity. Salinity had little effect on sorption behaviour and\nPOP\/plastic combination was shown to be a more important factor.\nTransport of Phe and DDT from riverine to brackish and marine waters by\nplastic is therefore likely to be much more dependent on the aqueous POP\nconcentration than on salinity. The physical characteristics of the\npolymer and local environmental conditions (e.g. plastic density,\nparticle residence time in estuaries) will affect the physical transport\nof contaminated plastics. A transport model of POPs by microplastics\nunder estuarine conditions is proposed. Transport of Phe and DDT by PVC\nand PE from fresh and brackish water toward fully marine conditions was\nthe most likely net direction for contaminant transport and followed the\norder: Phe-PE >> DDT-PVC = DDT-PE >> Phe-PVC.\nKeywords: Marine Strategy Framework Directive; sorption; hydrophobic\norganic compounds; brackish waters; plastic particles<\/pre>\n","protected":false},"excerpt":{"rendered":"
Adil Bakir, Steven J. Rowland, Richard C. Thompson, Transport of persistent organic pollutants by microplastics in estuarine conditions, Estuarine, Coastal and Shelf Science, Volume 140, 1 March 2014, Pages 14-21, ISSN 0272-7714, http:\/\/dx.doi.org\/10.1016\/j.ecss.2014.01.004. (http:\/\/www.sciencedirect.com\/science\/article\/pii\/S0272771414000110) Abstract: Microplastics represent an increasing source of anthropogenic contamination in aquatic environments, where they may also act as scavengers and transporters of persistent organic pollutants. As estuaries are amongst the most productive aquatic systems, it is important to understand sorption behaviour and transport of persistent organic pollutants (POPs) by microplastics along estuarine gradients. The effects of salinity sorption equilibrium kinetics on the distribution coefficients (Kd) of phenanthrene (Phe) and 4,4&prime;-DDT, onto polyvinyl chloride (PVC) and onto polyethylene (PE) were therefore investigated. A salinity gradient representing freshwater, estuarine and marine conditions, with salinities corresponding to 0 (MilliQ water, 690 &mu;S\/cm), 8.8, 17.5, 26.3 and 35 was used. Salinity had no significant effect on the time required to reach equilibrium onto PVC or PE and neither did it affect desorption rates of contaminants from plastics. Although salinity had no effect on sorption capacity of Phe onto plastics, a slight decrease in sorption capacity was observed for DDT with salinity. Salinity had little effect on sorption behaviour and POP\/plastic combination was shown to be a more important factor. Transport of Phe and DDT from riverine to brackish and marine waters by plastic is therefore likely to be much more dependent on the aqueous POP concentration than on salinity. The physical characteristics of the polymer and local environmental conditions (e.g. plastic density, particle residence time in estuaries) will affect the physical transport of contaminated plastics. A transport model of POPs by microplastics under estuarine conditions is proposed. Transport of Phe and DDT by PVC and PE from fresh and brackish water toward fully marine conditions was the most likely net direction for contaminant transport and followed the order: Phe-PE >> DDT-PVC = DDT-PE >> Phe-PVC. Keywords: Marine Strategy Framework Directive; sorption; hydrophobic organic compounds; brackish waters; plastic particles<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3504,3423],"tags":[3693,1445,1545,2290,3579],"yoast_head":"\nTransport of persistent organic pollutants by microplastics in estuarine conditions - One Earth - One Ocean e. V.<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/oneearth-oneocean.com\/en\/research-en\/2014\/transport-of-persistent-organic-pollutants-by-microplastics-in-estuarine-conditions\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Transport of persistent organic pollutants by microplastics in estuarine conditions - One Earth - One Ocean e. V.\" \/>\n<meta property=\"og:description\" content=\"Adil Bakir, Steven J. Rowland, Richard C. Thompson, Transport of persistent organic pollutants by microplastics in estuarine conditions, Estuarine, Coastal and Shelf Science, Volume 140, 1 March 2014, Pages 14-21, ISSN 0272-7714, http:\/\/dx.doi.org\/10.1016\/j.ecss.2014.01.004. (http:\/\/www.sciencedirect.com\/science\/article\/pii\/S0272771414000110) Abstract: Microplastics represent an increasing source of anthropogenic contamination in aquatic environments, where they may also act as scavengers and transporters of persistent organic pollutants. As estuaries are amongst the most productive aquatic systems, it is important to understand sorption behaviour and transport of persistent organic pollutants (POPs) by microplastics along estuarine gradients. The effects of salinity sorption equilibrium kinetics on the distribution coefficients (Kd) of phenanthrene (Phe) and 4,4&prime;-DDT, onto polyvinyl chloride (PVC) and onto polyethylene (PE) were therefore investigated. A salinity gradient representing freshwater, estuarine and marine conditions, with salinities corresponding to 0 (MilliQ water, 690 &mu;S\/cm), 8.8, 17.5, 26.3 and 35 was used. Salinity had no significant effect on the time required to reach equilibrium onto PVC or PE and neither did it affect desorption rates of contaminants from plastics. Although salinity had no effect on sorption capacity of Phe onto plastics, a slight decrease in sorption capacity was observed for DDT with salinity. Salinity had little effect on sorption behaviour and POP\/plastic combination was shown to be a more important factor. Transport of Phe and DDT from riverine to brackish and marine waters by plastic is therefore likely to be much more dependent on the aqueous POP concentration than on salinity. The physical characteristics of the polymer and local environmental conditions (e.g. plastic density, particle residence time in estuaries) will affect the physical transport of contaminated plastics. A transport model of POPs by microplastics under estuarine conditions is proposed. Transport of Phe and DDT by PVC and PE from fresh and brackish water toward fully marine conditions was the most likely net direction for contaminant transport and followed the order: Phe-PE >> DDT-PVC = DDT-PE >> Phe-PVC. Keywords: Marine Strategy Framework Directive; sorption; hydrophobic organic compounds; brackish waters; plastic particles\" \/>\n<meta property=\"og:url\" content=\"https:\/\/oneearth-oneocean.com\/en\/research-en\/2014\/transport-of-persistent-organic-pollutants-by-microplastics-in-estuarine-conditions\/\" \/>\n<meta property=\"og:site_name\" content=\"One Earth - One Ocean e. 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(http:\/\/www.sciencedirect.com\/science\/article\/pii\/S0272771414000110) Abstract: Microplastics represent an increasing source of anthropogenic contamination in aquatic environments, where they may also act as scavengers and transporters of persistent organic pollutants. As estuaries are amongst the most productive aquatic systems, it is important to understand sorption behaviour and transport of persistent organic pollutants (POPs) by microplastics along estuarine gradients. The effects of salinity sorption equilibrium kinetics on the distribution coefficients (Kd) of phenanthrene (Phe) and 4,4&prime;-DDT, onto polyvinyl chloride (PVC) and onto polyethylene (PE) were therefore investigated. A salinity gradient representing freshwater, estuarine and marine conditions, with salinities corresponding to 0 (MilliQ water, 690 &mu;S\/cm), 8.8, 17.5, 26.3 and 35 was used. Salinity had no significant effect on the time required to reach equilibrium onto PVC or PE and neither did it affect desorption rates of contaminants from plastics. Although salinity had no effect on sorption capacity of Phe onto plastics, a slight decrease in sorption capacity was observed for DDT with salinity. Salinity had little effect on sorption behaviour and POP\/plastic combination was shown to be a more important factor. Transport of Phe and DDT from riverine to brackish and marine waters by plastic is therefore likely to be much more dependent on the aqueous POP concentration than on salinity. The physical characteristics of the polymer and local environmental conditions (e.g. plastic density, particle residence time in estuaries) will affect the physical transport of contaminated plastics. A transport model of POPs by microplastics under estuarine conditions is proposed. 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