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Chemical characteristics and precipitation fluxes of soot transported to Japan

Research Project

Project/Area Number 23655140
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Environmental chemistry
Research InstitutionHirosaki University

Principal Investigator

TSURUMI Makoto  弘前大学, 大学院・理工学研究科, 教授 (70111680)

Project Period (FY) 2011
Project Status Completed (Fiscal Year 2011)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2011: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Keywords微量環境物質評価 / スス / 早期融雪 / 越境汚染 / 黒い雪
Research Abstract

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.

Report

(2 results)
  • 2011 Annual Research Report   Final Research Report ( PDF )

URL: 

Published: 2011-08-05   Modified: 2019-07-29  

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