Department of Ocean Science and Engineering, Southern University of Science and Technology, No. 1088 Xueyuan Blvd, Nanshan District, Shenzhen, Guangdong 518055, China.
Department of Ocean Science and Engineering, Southern University of Science and Technology, No. 1088 Xueyuan Blvd, Nanshan District, Shenzhen, Guangdong 518055, China; Center for Oceanic and Atmospheric Science at SUSTech (COAST), Southern University of Science and Technology, Shenzhen, China.
Sci Total Environ. 2021 May 10;768:145054. doi: 10.1016/j.scitotenv.2021.145054. Epub 2021 Jan 9.
Volatile organic compounds (VOCs) play a vital role in the global carbon budget and in the regional formation of ozone in the troposphere, and are emitted from both natural and anthropogenic activities. They can also serve as a source of secondary organic aerosol (SOA). Field and model studies showed evidences of a strong marine biogenic influence on marine aerosols. Although knowledge of terrestrial VOC emissions and SOA formation mechanisms has been advanced considerably over the last decades, processes constraining marine VOC emissions and marine SOA formation remain poorly understood. Seawater contains an extremely complex, diverse, and largely unidentified mixture of VOCs. Despite the fact that the ocean covers 70% of the Earth's surface, the role of the ocean in the global budget of VOCs is still unclear. The distribution and emission of sea surface VOCs exhibit considerable spatial-temporal variation, with higher concentrations often, but not always, correlated with biological activities. VOCs in surface seawater have been measured in various geographic regions, however, knowledge of the distribution of marine VOCs and the role of the oceans in the global atmospheric chemistry is still insufficient due to the paucity of measurements. This study reviews marine VOCs in terms of current analytical methods, global marine VOCs measurements, their effects on SOA, and future needs for understanding the role of marine VOCs in the chemistry of the atmosphere.
挥发性有机化合物（VOCs）在全球碳预算和对流层中臭氧的区域形成中起着至关重要的作用，它们既来自自然活动，也来自人为活动。它们还可以作为二次有机气溶胶（SOA）的来源。现场和模型研究表明，海洋生物对海洋气溶胶有很强的影响。尽管过去几十年中，人们对陆地 VOC 排放和 SOA 形成机制的认识有了很大的提高，但限制海洋 VOC 排放和海洋 SOA 形成的过程仍知之甚少。海水中含有极其复杂、多样且在很大程度上未被识别的 VOC 混合物。尽管海洋覆盖了地球表面的 70%，但海洋在全球 VOC 预算中的作用仍不清楚。海表面 VOC 的分布和排放表现出相当大的时空变化，尽管通常但并非总是与生物活动相关的浓度更高。已经在各个地理区域测量了海表面 VOC，但由于测量的缺乏，海洋 VOC 的分布及其在全球大气化学中的作用的知识仍然不足。本研究从当前的分析方法、全球海洋 VOC 测量、它们对 SOA 的影响以及未来理解海洋 VOC 在大气化学中的作用的需求等方面综述了海洋 VOC。
