• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Investigation of dynamics of atmospheric mercury using Hg isotope analysis

Research Project

Project/Area Number 16K16187
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Environmental dynamic analysis
Research InstitutionNational Institute for Environmental Studies

Principal Investigator

Yamakawa Akane  国立研究開発法人国立環境研究所, 環境計測研究センター, 主任研究員 (00720286)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords大気中水銀 / 水銀同位体分析 / CHAAMS / MC-ICP-MS / マルチコレクター誘導結合プラズマ質量分析計 / 環境化学 / MDF / MIF
Outline of Final Research Achievements

Mercury (Hg) is a globally spread pollutant. For better understanding of the Hg atmospheric cycling, it is important to characterize Hg emission sources, such as anthropogenic and natural, and link the sources to Hg exposure of the environmental system. Since the utility of Hg isotopic ratios in atmospheric mercury has been discussed to understand its source(s), we aimed to obtain Hg isotopic compositions of gaseous elemental mercury (GEM) at background site, the Cape Hedo, Okinawa. Our annual monitoring results showed a seasonal trend especially for δ202Hg values. We also observed clear positive correlations between δ202Hg values of GEM, and CO and PM2.5 concentrations in the summer. According to the back-trajectory and meteorological data, the GEM might be derived mainly from the southwest, and mixed with background air in the summer. In this study, Hg isotopic compositions of volcanic and incinerator gases were obtained.

Academic Significance and Societal Importance of the Research Achievements

水俣病を経験した我が国では、水銀による環境問題として「限定された地域の汚染」というイメージが強い。しかし近年は、水銀は様々な化学形態をとりながら、大気、海洋、陸域など複数の環境媒体へと汚染域を拡大する「広域汚染物質」という認識が広まりつつある。将来拡大するかもしれない水銀汚染への未然防止策として、水銀の排出・拡散の実態を明らかにすることは極めて重要な課題である。そこで本研究では、大気中水銀の定量および同位体分析に基づく排出源周辺および広域汚染の実態を調査し、水銀の環境動態について新たな知見を得ることを目的とした。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (6 results)

All 2019 2018 2017 2016

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (5 results) (of which Int'l Joint Research: 1 results,  Invited: 2 results)

  • [Journal Article] merging investigator series: investigation of mercury emission sources using Hg isotopic compositions of atmospheric mercury at the Cape Hedo Atmosphere and Aerosol Monitoring Station (CHAAMS), Japan2019

    • Author(s)
      Yamakawa A., Takami A., Takeda. Y., Kaji Y., Kato S.
    • Journal Title

      Environmental Science: Processes & Impacts

      Volume: 印刷中 Issue: 5 Pages: 809-818

    • DOI

      10.1039/c8em00590g

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 大気中水銀同位体分析:沖縄県辺戸岬での季節変動調査2019

    • Author(s)
      山川茜,高見昭憲,加藤俊吾, 梶井克純
    • Organizer
      第28回環境化学討論会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Hg isotopic measurements for atmospheric mercury at the Cape Hedo Atmosphere and Aerosol Monitoring Station (CHAAMS), Japan2019

    • Author(s)
      Yamakawa A., Takami A., Takeda. Y., Kaji Y., Kato S.
    • Organizer
      European Winter Conference on Plasma Spectrometry
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 大気中水銀同位体分析~辺戸ステーションでの長期観測~2018

    • Author(s)
      山川 茜
    • Organizer
      第27回環境化学討論会、国立環境研究所シンポジウム東アジアの越境大気汚染-国立環境研究所辺戸岬観測ステーションでの成果を中心に-
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 環境中の水銀分析法について-同位体分析からわかる水銀の発生源と環境動態-2017

    • Author(s)
      山川茜
    • Organizer
      第59回日本環境化学会講演会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] 大気中水銀同位体分析:手法とその応用2016

    • Author(s)
      山川茜
    • Organizer
      第6回同位体環境学シンポジウム
    • Place of Presentation
      総合地球環境研究所(京都)
    • Year and Date
      2016-12-22
    • Related Report
      2016 Research-status Report

URL: 

Published: 2016-04-21   Modified: 2020-03-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi