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首页> 外文期刊>Marine pollution bulletin >Persistence and photochemical transformation of water soluble constituents from industrial crude oil and natural seep oil in seawater
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Persistence and photochemical transformation of water soluble constituents from industrial crude oil and natural seep oil in seawater

机译：海水中工业原油和天然渗漏水溶性成分的持久性和光化学转化

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摘要

The persistence and transformation of water soluble chemical constituents derived from surface oil from the 2015 Refugio Oil Spill and from a nearby natural seep were evaluated under simulated sunlight conditions. Photoirradiation resulted in enhanced oil slick dissolution, which was more pronounced in spill oil compared to seep oil. Nontargeted analysis based on GC ? GC/TOF-MS revealed that photoirradiation promoted oil slick dissolution, and more water soluble compounds were released from spill oil (500 compounds) than from seep oil (180 compounds), most of them (488 in spill oil and 150 in seep oil) still persisting in solution after 67 days of photoirradiation. First-order degradation rate coefficients of humic-like water soluble constituents were found to be 0.26 day-1 and 0.29 day-1 for irradiated spill and seep samples, respectively. The decreases in humic-like fluorescence, specific UV absorbance, and aromatic compounds without corresponding decreases in DOC concentration support indirect photochemical transformation in addition to complete photomineralization.
机译：在模拟阳光条件下评估了从2015年Refugio Oill Spilill和附近的天然席克的水溶性化学成分的持续性和转化。与渗水相比，光放射导致增强的油脂溶解，其在溢油中更加明显。基于GC的不确定分析？ GC / TOF-MS揭示了光异性辐射促进的油脂溶解，并且从溢油（500种化合物）释放出更多的水溶性化合物，而不是来自渗漏油（180种化合物），其中大部分（488次溢油中的溢油中的150个）在67天的光照相后仍然持续存在。发现腐殖质水溶性成分的一阶降解速率系数分别为0.26天-1和0.29天-1，分别用于照射溢出和渗漏样品。除了完全的光矿化外，腐殖质样荧光，特异性UV吸光度和芳族化合物的降低而没有相应的DOC浓度支持的间接光化学转化。

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  • 来源
    《Marine pollution bulletin》 |2021年第4期|112049.1-112049.10|共10页
  • 作者

    Snyder Kristen; Mladenov Natalie; Richardot William; Dodder Nathan; Nour Azin; Campbell Cari; Hoh Eunha;

  • 作者单位

    San Diego State Univ Dept Civil Construct & Environm Engn San Diego CA 92182 USA;

    San Diego State Univ Dept Civil Construct & Environm Engn San Diego CA 92182 USA;

    San Diego State Univ Sch Publ Hlth San Diego CA 92182 USA;

    San Diego State Univ Sch Publ Hlth San Diego CA 92182 USA;

    San Diego State Univ Dept Civil Construct & Environm Engn San Diego CA 92182 USA;

    San Diego State Univ Dept Civil Construct & Environm Engn San Diego CA 92182 USA;

    San Diego State Univ Sch Publ Hlth San Diego CA 92182 USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Non-targeted analysis; Photooxidation; Fluorescence; Oil spill; Gas chromatography; Pacific Ocean;

    机译：非靶向分析;光氧化;荧光;漏油;气相色谱;太平洋;

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