Chemical characteristics and precipitation fluxes of soot transported to Japan

运往日本的烟尘化学特征及沉淀通量

• 批准号: 23655140
• 负责人: TSURUMI Makoto
• 金额: $ 2.66万
• 依托单位: Hirosaki University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 无数据
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23655140/
• 关键词: 微量環境物質評価; スス; 早期融雪; 越境汚染; 黒い雪

Chemical characteristics and precipitation fluxes of soot samples were evaluated for weekly collected bulk precipitation by ion chromatograph and for the filtered soot with weighing balance. The precipitation flux of the soot in Japan has not been clarified. The samples were collected during one year, in Hirosaki, Aomori, Japan. The flux of the soot was estimated as similar amount as the flux of yellow sand in Japan. Weekly chloride ion concentrations are correlated to the fluxes of soots, suggesting that both the soots and the chloride ions were carried with the winter prevailing winds from west and, thus, that the soots come from the china continent. Possible reasons for this observation should be discussed in detail. To examin also the relation between the soot precipitation and the wind direction, the samples must be collected over the Japan Sea.

用离子色谱仪对每周收集的大量降水中的烟尘样品的化学特征和降水通量进行了评价，并对过滤后的烟尘样品用称重天平进行了评价。日本烟尘的沉降通量尚未明确。在日本青森的广崎采集了一年的样本。烟尘的排放量与日本黄沙的排放量相当。每周的氯离子浓度与碳烟的通量相关，表明碳烟和氯离子都是由冬季盛行风从西方带来的，因此，碳烟来自中国大陆。应详细讨论这一观察结果的可能原因。为了研究烟尘沉降与风向的关系，必须在日本海上空采集样品。