Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019JD032182 |
Understanding the Interfacial Behavior of Typical Perfluorocarboxylic Acids at Surfactant-Coated Aqueous Interfaces | |
Cheng, Shumin1; Du, Lin1; George, Christian2,3 | |
2020-07-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2020 |
卷号 | 125期号:13 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; France |
英文摘要 | Sea surface microlayers (SMLs) play an important role in the transport and fate of surfactants from both anthropogenic and biogenic sources. The formation of sea spray aerosols (SSAs) at the SML has been recognized as a critical pathway for the entry of surfactants into the atmosphere. Perfluorocarboxylic acids (PFCAs) have become increasingly concerning as a class of emerging organic pollutants, having high enrichment in surface seawaters due to their remarkable surface activity. Using artificial seawater coated by extensively existed surfactants, including stearyl alcohol (C18OH) and stearic acid (SA) as simplified models of the SML and fresh SSAs, the interfacial behaviors of soluble and insoluble PFCAs were examined. Information about lateral packing and chain conformation of films was obtained by means of Langmuir trough and infrared reflection-absorption spectroscopy (IRRAS). Perfluorooctanoic acid (PFOA) dissolved in aqueous subphases was found to be incorporated into lipid monolayers via alterations in surface pressure-area (pi-A) isotherms. With negligible solubility, perfluorotetradecanoic acid (PFTA) formed condensed mixed monolayers with other lipids at the air-water interface. The mixed monolayers of C18OH/PFTA and SA/PFTA were expanded by the addition of sea salts into the pure water subphase. Compared with the pi-A isotherms of SA/PFTA, decreased molecular areas were observed for those of C18OH/PFTA. This research suggests that PFCAs can be incorporated into air-water interfaces by acting as film-forming materials. The introduction of PFCAs will alter the surface properties and thus the atmospheric fate and behavior of SSAs and SMLs. |
英文关键词 | Langmuir film Lipid Mixed monolayer Air-water interface sea spray aerosol Perfluorocarboxylic acids |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000551484700035 |
WOS关键词 | AIR-WATER-INTERFACE ; SEA SPRAY AEROSOL ; FATTY-ACID ; ORGANIC FILMS ; PERFLUORINATED COMPOUNDS ; MIXED MONOLAYERS ; PALMITIC ACID ; PERFLUOROTETRADECANOIC ACID ; PERFLUOROSTEARIC ACID ; MARINE ATMOSPHERE |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/289509 |
专题 | 气候变化 |
作者单位 | 1.Shandong Univ, Environm Res Inst, Qingdao, Peoples R China; 2.Shandong Univ, Sch Environm Sci & Engn, Qingdao, Peoples R China; 3.Univ Claude Bernard Lyon 1, IRCELYON, CNRS, Villeurbanne, France |
推荐引用方式 GB/T 7714 | Cheng, Shumin,Du, Lin,George, Christian. Understanding the Interfacial Behavior of Typical Perfluorocarboxylic Acids at Surfactant-Coated Aqueous Interfaces[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2020,125(13). |
APA | Cheng, Shumin,Du, Lin,&George, Christian.(2020).Understanding the Interfacial Behavior of Typical Perfluorocarboxylic Acids at Surfactant-Coated Aqueous Interfaces.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,125(13). |
MLA | Cheng, Shumin,et al."Understanding the Interfacial Behavior of Typical Perfluorocarboxylic Acids at Surfactant-Coated Aqueous Interfaces".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 125.13(2020). |
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