Long-term sorption of metals is similar among plastic types: implications for plastic debris in aquatic environments.
Long-term sorption of metals is similar among plastic types: implications for plastic debris in aquatic environments.
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DOI：
10.1371/journal.pone.0085433
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发表时间：
2014
期刊：
影响因子：
3.7
通讯作者：
Teh SJ
中科院分区：
文献类型：
--
作者：
Rochman CM;Hentschel BT;Teh SJ
对塑料碎片及其在水环境中积累高浓度优先污染物的能力的担忧促使我们量化海水中不同类型的大规模生产的塑料和金属之间的关系。在圣地亚哥湾的三个地点，我们测量了9种目标金属（铝、铬、锰、铁、钴、镍、锌、镉和铅）在1、3、6、9和12个月时取样的积累，5种塑料类型：聚对苯二甲酸乙二醇酯（PET）、高密度聚乙烯（HDPE）、聚氯乙烯（PVC）、低密度聚乙烯（LDPE）和聚丙烯（PP）。积累模式在空间和时间上并不一致，一般而言，所有类型的塑料都倾向于积累类似浓度的金属。当我们在圣地亚哥湾的单个采样周期或位置观察到金属浓度之间的显着差异时，我们发现HDPE通常积累的金属浓度低于其他四种聚合物。此外，在12个月的研究期间，所有金属的浓度都随着时间的推移而增加，在整个12个月的暴露期间，铬，锰，钴，镍，锌和铅在至少一种塑料类型上没有达到饱和。这表明，塑料碎片在海上停留的时间越长，金属的浓度就越高。总的来说，我们的工作表明，在由各种塑料组成的塑料碎片上可以发现复杂的金属混合物，包括美国环保署列为优先污染物的金属（镉、镍、锌和铅）。
Concerns regarding plastic debris and its ability to accumulate large concentrations of priority pollutants in the aquatic environment led us to quantify relationships between different types of mass-produced plastic and metals in seawater. At three locations in San Diego Bay, we measured the accumulation of nine targeted metals (aluminum, chromium, manganese, iron, cobalt, nickel, zinc, cadmium and lead) sampling at 1, 3, 6, 9 and 12 months, to five plastic types: polyethylene terephthalate (PET), high-density polyethylene (HDPE), polyvinyl chloride (PVC), low-density polyethylene (LDPE), and polypropylene (PP). Accumulation patterns were not consistent over space and time, and in general all types of plastic tended to accumulate similar concentrations of metals. When we did observe significant differences among concentrations of metals at a single sampling period or location in San Diego Bay, we found that HDPE typically accumulated lesser concentrations of metals than the other four polymers. Furthermore, over the 12-month study period, concentrations of all metals increased over time, and chromium, manganese, cobalt, nickel, zinc and lead did not reach saturation on at least one plastic type during the entire 12-month exposure. This suggests that plastic debris may accumulate greater concentrations of metals the longer it remains at sea. Overall, our work shows that a complex mixture of metals, including those listed as priority pollutants by the US EPA (Cd, Ni, Zn and Pb), can be found on plastic debris composed of various plastic types.
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影响因子：
8.8
作者：
Deheyn, Dimitri D.;Latz, Michael I.
通讯作者：
Latz, Michael I.
DOI：
10.1098/rstb.2008.0205
发表时间：
2009-07-27
影响因子：
6.3
作者：
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通讯作者：
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影响因子：
5.8
作者：
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通讯作者：
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影响因子：
3.3
作者：
HUTCHINSON, TH;WILLIAMS, TD;EALES, GJ
通讯作者：
EALES, GJ
影响因子：
5.8
作者：
Donohue, MJ;Boland, RC;Antonelis, GA
通讯作者：
Antonelis, GA