EAPSI: Chemical reaction of pollutants within fog droplets in the Eastern Yellow Sea

EAPSI：东黄海雾滴内污染物的化学反应

• 批准号: 1414725
• 负责人: Alexandra Boris
• 金额: $ 0.51万
• 依托单位: Boris Alexandra J
• 依托单位国家: 美国
• 项目类别: Fellowship Award
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-06-01 至 2015-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1414725&HistoricalAwards=false
• 关键词: EAPSI; Chemical; reaction; pollutants; within

Fog droplets can impact air pollutants by providing a medium for their removal from the atmosphere, or their chemical reaction to form products that impact the climate system, human health, and ecosystem health differently. Specifically, solid and liquid products formed from aqueous reactions in fog droplets can aggregate to increase the number of particles available for cloud or fog droplet formation, and in turn, the lifetime and density of a cloud or fog. The chemicals present in atmospheric particles, fog, or cloud water will also determine their toxicity as they enter human respiratory systems or are deposited into ecosystems. Identifying and quantifying chemical reactions occurring within fog water is therefore important, particularly in regions where large amounts of pollutants have been measured, and fog events are frequent. This research will be conducted at Baengnyeong Island, Korea with the assistance of Dr. Taehyoung Lee of Hankuk University of Foreign Studies in Seoul. Baengnyeong Island is located in the Eastern Yellow Sea, where frequent fog events during the summer coincide with large amounts of gaseous and suspended solid or liquid pollutants from industrial, agricultural, desert (dust), and sea sources. Chemical and physical measurements of fog water collected at Baengnyeong Island will be made to determine whether expected chemical reactions are occurring within the fog. Additional analyses will include analyses for anions including sulfate and nitrate, organic pollutants such as nitrophenols, and products of expected reactions such as small carboxylic acids. This NSF EAPSI award is funded in collaboration with the National Research Foundation of Korea.

雾滴可以通过提供从大气中去除空气污染物的媒介，或者通过它们的化学反应形成产品，以不同的方式影响气候系统、人类健康和生态系统健康，从而影响空气污染物。具体地说，雾滴中水反应形成的固体和液体产品可以聚集在一起，增加可用于形成云或雾液滴的粒子数量，进而增加云或雾的寿命和密度。大气颗粒物、雾或云水中存在的化学物质也将在它们进入人类呼吸系统或沉积到生态系统时确定它们的毒性。因此，确定和量化雾水中发生的化学反应是重要的，特别是在测量到大量污染物和雾事件频繁的地区。这项研究将在韩国白宁岛进行，由首尔韩国外国语大学的Taehyoung Lee博士协助进行。白宁岛位于东黄海，夏季雾事件频繁，同时工业、农业、沙漠(粉尘)和海洋来源的大量气态和悬浮固体或液体污染物。将对在白娘岛收集的雾水进行化学和物理测量，以确定雾中是否发生了预期的化学反应。其他分析将包括对硫酸盐和硝酸盐等阴离子、硝基酚等有机污染物以及预期反应产物(如小羧酸)的分析。该NSF EAPSI奖是与韩国国家研究基金会合作资助的。