Research field (1)：
Environmental impact assessment
Research keywords (3)：
環境影響評価
, 安定同位体
, 大気環境
Research theme for competitive and other funds (3)：
2019 - 2024 水溶性有機炭素の成分ごとの新たな多元素同位体測定と発生源の解明
2017 - 2019 微小粒子状物質に含まれる水溶性有機物の実態解明と発生源の推定
2015 - 2016 水溶性農薬に含まれる炭素安定同位体比の高精度分析法の確立
Papers (10)：
Hiroto Kawashima, Otoha Yoshida, Nana Suto. Long-Term Source Apportionment of Ammonium in PM<sub>2.5</sub> at a Suburban and a Rural Site Using Stable Nitrogen Isotopes. Environmental Science & Technology. 2023. 57. 3. 1268-1277
Nana Suto, Hiroto Kawashima. Measurement report: Source characteristics of water-soluble organic carbon in PM2.5 at two sites in Japan, as assessed by long-term observation and stable carbon isotope ratio. Atmospheric Chemistry and Physics. 2021. 21. 15. 11815-11828
Hiroto Kawashima, Otoha Yoshida, Nana Suto. Ion-exchange resin and denitrification pretreatment for determining δ15N-NH4+, δ15N-NO3-, and δ18O-NO3- values. Rapid Communications in Mass Spectrometry. 2021. 35. 6. e9027
