Sunlight-driven dissolution is a major fate of oil at sea.
Sunlight-driven dissolution is a major fate of oil at sea.
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DOI：
10.1126/sciadv.abl7605
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发表时间：
2022-02-18
期刊：
影响因子：
13.6
通讯作者：
Ward CP
中科院分区：
文献类型：
--
作者：
Freeman DH;Ward CP
阳光引发的氧化反应可以将海上原油的不溶性成分转化为水溶性产物，这一过程被称为光溶解。半个世纪前首次报道，光溶解从未包括在泄漏模型中，因为速率模型所需的关键参数未知，包括波长和光子剂量依赖性。在这里，我们通过实验将光溶解作为波长和光子剂量的函数进行量化，从而可以对假设泄漏情景中的环境变量进行敏感性分析，并对2010年深水地平线（DwH）泄漏进行质量平衡评估。敏感性分析表明，速率对浮油厚度、季节/纬度和波长最敏感，对光子剂量不太敏感。我们估计3 - 17%（最好的估计是8%）的DwH表面油受到光溶解的影响，其程度与其他广泛认可的溶解过程相当。我们的研究结果引发了对地面石油预算的重新评估，无论是DwH还是未来的海上泄漏。阳光驱动的溶解在数量上可与其他油的消失过程相比较，应包括在泄漏模型中。
Oxygenation reactions initiated by sunlight can transform insoluble components of crude oil at sea into water-soluble products, a process called photo-dissolution. First reported a half century ago, photo-dissolution has never been included in spill models because key parameters required for rate modeling were unknown, including the wavelength and photon dose dependence. Here, we experimentally quantified photo-dissolution as a function of wavelength and photon dose, making possible a sensitivity analysis of environmental variables in hypothetical spill scenarios and a mass balance assessment for the 2010 Deepwater Horizon (DwH) spill. The sensitivity analysis revealed that rates were most sensitive to oil slick thickness, season/latitude, and wavelength and less sensitive to photon dose. We estimate that 3 to 17% (best estimate 8%) of DwH surface oil was subject to photo-dissolution, comparable in magnitude to other widely recognized fate processes. Our findings invite a critical reevaluation of surface oil budgets for both DwH and future spills at sea. Sunlight-driven dissolution is quantitatively comparable with other oil fate processes and should be included in spill models.
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影响因子：
3
作者：
HANSEN H P
通讯作者：
HANSEN H P
影响因子：
11.4
作者：
Hong, Jun;Xie, Huixiang;Song, Guisheng
通讯作者：
Song, Guisheng
影响因子：
4.1
作者：
Bridges, Kristin N.;Lay, Claire R.;Roberts, Aaron P.
通讯作者：
Roberts, Aaron P.
影响因子：
11.4
作者：
Aeppli, Christoph;Swarthout, Robert F.;Reddy, Christopher M.
通讯作者：
Reddy, Christopher M.
DOI：
10.1016/0302-3524(74)90034-6
发表时间：
1974-01-01
期刊：
Estuarine and Coastal Marine Science
影响因子：
--
作者：
BURWOOD R;SPEERS G C
通讯作者：
SPEERS G C