| DOI: | 10.1016/j.marpolbul.2016.06.048
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| Scopus记录号: | 2-s2.0-84990879547
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| 论文题名: | Long-term aging and degradation of microplastic particles: Comparing in situ oceanic and experimental weathering patterns |
| 作者: | Brandon J.; Goldstein M.; Ohman M.D.
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| 刊名: | Marine Pollution Bulletin
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| ISSN: | 0025-326X
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| EISSN: | 1879-3363
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| 出版年: | 2016
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| 卷: | 110, 期:1 | | 起始页码: | 299
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| 结束页码: | 308
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| 语种: | 英语
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| 英文关键词: | FTIR
; North Pacific Subtropical Gyre
; Oceanic microplastic
; Polyethylene (PE)
; Polypropylene (PP)
; Weathering
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| Scopus关键词: | plastic
; polyethylene
; polypropylene
; sea water
; water pollutant
; bioremediation
; California
; chemistry
; hydrogen bond
; infrared spectroscopy
; sunlight
; water pollutant
; Biodegradation, Environmental
; California
; Hydrogen Bonding
; Plastics
; Polyethylene
; Polypropylenes
; Seawater
; Spectroscopy, Fourier Transform Infrared
; Sunlight
; Water Pollutants, Chemical
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| Scopus学科分类: | Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
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| 英文摘要: | Polypropylene, low-density polyethylene, and high-density polyethylene pre-production plastic pellets were weathered for three years in three experimental treatments: dry/sunlight, seawater/sunlight, and seawater/darkness. Changes in chemical bond structures (hydroxyl, carbonyl groups and carbon-oxygen) with weathering were measured via Fourier Transform Infrared (FTIR) spectroscopy. These indices from experimentally weathered particles were compared to microplastic particles collected from oceanic surface waters in the California Current, the North Pacific Subtropical Gyre, and the transition region between the two, in order to estimate the exposure time of the oceanic plastics. Although chemical bonds exhibited some nonlinear changes with environmental exposure, they can potentially approximate the weathering time of some plastics, especially high-density polyethylene. The majority of the North Pacific Subtropical Gyre polyethylene particles we measured have inferred exposure times > 18 months, with some > 30 months. Inferred particle weathering times are consistent with ocean circulation models suggesting a long residence time in the open ocean. © 2016 Elsevier Ltd |
| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/86813
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| Appears in Collections: | 过去全球变化的重建
全球变化的国际研究计划
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作者单位: | Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, United States
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| Recommended Citation: | |
Brandon J.,Goldstein M.,Ohman M.D.. Long-term aging and degradation of microplastic particles: Comparing in situ oceanic and experimental weathering patterns[J]. Marine Pollution Bulletin,2016-01-01,110(1)
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