Recent Publications and Grants
Publications
*corresponding author
2023
- New Hiroto Kawashima*, Otoha Yoshida, Nana Suto (2023), Long-Term Source Apportionment of Ammonium in PM2.5 at a Suburban and a Rural Site Using Stable Nitrogen Isotopes, Environmental Science & Technology, vol.57(3), pp.1268-1277
2022
- New Hiroto Kawashima* (2022), Stable Carbon Isotope Ratio of Volatile Organic Compounds in Air Using Solid-Phase Microextraction Coupled with Chromatography, Combustion, and Isotope Ratio Mass Spectrometry, Chromatographia, vol.85, pp.871-881
- New Hiroto
Kawashima*, Otoha Yoshida, Khaled Shaifullah Joy, Rasel
Ahammed Raju, Kazi Naimul Islam, Farah Jeba, Abdus Salam
(2022), Sources identification of ammonium
in PM2.5 during monsoon season in Dhaka, Bangladesh, Science
of the Total Environment, vol.838, Article
number 156433
- New Momoka Suto, Hiroto Kawashima* (2022), Discrimination for sake brewing methods by compound specific isotope analysis and formation mechanism of organic acids in sake, Food Chemistry, vol.381, Article number 132295
2021
- New Nur Hidayah Norazman, Md Firoz Khan*, Sharanya Ramanathan, Syazwani Mustapa Kama Shah, Siti Jariani Mohd Jani, Khaled Shaifullah JoyKhaled Shaifullah Joy, Kazi Naimul Islam, Farah Jeba, Abdus Salam, Otoha Yoshida, and Hiroto Kawashima* (2021), Influence of Monsoonal Driving Factors on the Secondary Inorganic Aerosol over Ambient Air in Dhaka, ACS Earth and Space Chemistry, vol.5(9), 2517–2533
- New Nana Suto*, Hiroto Kawashima* (2021), 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, vol.21(15), 11815-11828
- New Hiroto
Kawashima*, Otoha Yoshida, Nana Suto (2021), Ion‐exchange
resin and denitrification pretreatment for determining
δ15N‐NH4+, δ15N‐NO3‐, and δ18O‐NO3‐ values , Rapid
Communications in Mass Spectrometry, vol.6,
e9027, page 1-10
- New Hiroto Kawashima*, Raiki Ogata, Takumi Gunji (2021), Laboratory-based validation of a passive sampler for determination of the nitrogen stable isotope ratio of ammonia gas, Atmospheric Environment, Volume 245, 118009
2020
- Momoka Suto, Hiroto Kawashima* (2020), Carbon isotope ratio of organic acids in sake and wine by solid-phase extraction combined with LC/IRMS, Analytical and Bioanalytical Chemistry, page 1-9
- Momoka Suto, Hiroto Kawashima*, Yasunori Nakamura (2020), Determination of Organic Acids in Honey by Liquid Chromatography with Tandem Mass Spectrometry, Food Analytical Methods, page 1-9
- Yasunori Nakamura*, Masami Ono, Momoka Suto, Hiroto Kawashima (2020), Analysis of malto-oligosaccharides and related metabolites in rice endosperm during development, Planta, vol.251, Article number 110
- Takeshi Kinase, Kouji Adachi, Naga Oshima, Kumiko Goto-Azuma, Yoshimi Ogawa‐Tsukagawa, Yutaka Kondo, Nobuhiro Moteki, Sho Ohata, Tatsuhiro Mori, Masahiko Hayashi, Keiichiro Hara, Hiroto Kawashima, Kazuyuki Kita* (2020), Concentrations and Size Distributions of Black Carbon in the Surface Snow of Eastern Antarctica in 2011, Journal of Geophysical Research-Atmospheres, e2019JD030737
2019
- Momoka Suto, Hiroto Kawashima* (2019), Compound Specific Carbon Isotope Analysis in Sake by LC/IRMS and Brewers’ Alcohol Proportion, Scientific Reports, vol.9, Article number 17635
- Momoka Suto, Hiroto Kawashima*, Nana Suto (2019), Heart-cutting two-dimensional liquid chromatography combined with isotope ratio mass spectrometry for the determination of stable carbon isotope ratios of gluconic acid in honey, Journal of Chromatography A, vol.1608, Article number. 460421
- Hiroto Kawashima*, Sae Ono (2019), Nitrogen Isotope Fractionation from Ammonia Gas to Ammonium in Particulate Ammonium Chloride, Environmental Science & Technology, vol.53(18), pp.10629-10635
- Hiroto Kawashima* (2019), Seasonal
trends of the stable nitrogen isotope ratio in particulate
nitrogen compounds and their gaseous precursors in Akita,
Japan, Tellus B: Chemical and Physical
Meteorology, vol.71(1), pp.1-13
- Hiroto Kawashima* (2019), Authenticity and Geographic Origin of Food Using Stable Isotope Ratios, Journal of the Mass Spectrometry Society of Japan, vol.67, pp.86-91
- Hiroto Kawashima*, Momoka Suto, Nana Suto (2019), Stable carbon isotope ratios for organic acids in commercial honey samples, Food Chemistry, vol.289, pp.49-55
2018
- Nana Suto, Hiroto Kawashima* (2018), Online wet oxidation/isotope ratio mass spectrometry method for determination of stable carbon isotope ratios of water-soluble organic carbon in particulate matter, Rapid Communications in Mass Spectrometry, vol.32, pp.1668-1674
- Hiroto Kawashima*, Momoka Suto, Nana Suto (2018), Determination of carbon isotope ratios for honey samples by means of a liquid chromatography/isotope ratio mass spectrometry system coupled with a post‐column pump, Rapid Communications in Mass Spectrometry, vol.32, pp.1271-1279
- Hiroto Kawashima* (2018), Source identification for environmental compounds using stable isotope -Recent research using stable isotope ratio analysis of pesticide- , Japanese Journal of Pesticide Science, vol.43(2), pp.131-132
2017
- Hiroto Kawashima*, Takuro Kariya (2017), Use of stable carbon isotope ratios to determine the source of cypermethrin in so-called natural plant extract formulations used for organic farming, Isotopes in Environmental and Health Studies, vol.53, pp.70-79
- Nana Suto, Hiroto Kawashima* (2017), Classification of nine malathion emulsion samples by using carbon isotope ratios and the ratio of organic solvents, Science & Justice, vol.57, pp.1-5
2016
- Nana Suto, Hiroto Kawashima* (2016), Global mapping of carbon isotope ratios in coal, Journal of Geochemical Exploration, vol.167, pp.12-1
- Takeshi Kinase, Kazuyuki Kita*, Yoshimi Ogawa, Kumiko Goto Azuma, Hiroto Kawashima (2016), Influence of the melting temperature on the measurement of the mass concentration and size distribution of black carbon in snow, Atmospheric Measurement Technique, vol.9, pp.1939-1945
2015
- Nana Suto, Hiroto Kawashima* (2015), Stable carbon isotope ratio for sugar, amino acid, and caffeine by liquid chromatography/isotope ratio mass spectrometry, Procedia Earth and Planetary Science, vol.13, pp.181-184
- Hiroto Kawashima* (2015), The fractionation factors of hydrogen stable isotopes for VOCs, Procedia Earth and Planetary Science, vol.13, pp.185-188
- Hiroto Kawashima* (2015), The measurement of stable carbon isotope ratios of eight methamidophos samples, Journal of Forensics Science, Volume 60, Issue 5, Pages 1360–1364
2014
- Hiroto Kawashima* (2014),Isotope Environmental Science - 2. Source identification using stable isotope - ,Journal of Japan Society for Atmospheric Environment,vol.49, pp.A47-A57
- Hiroto Kawashima*, Mai Murakami(2014), Measurement of the stable carbon isotope ratio of atmospheric volatile organic compounds using chromatography, combustion, and isotope ratio mass spectrometry coupled with thermal desorption, Atmospheric Environment, vol.89, pp.140-147
- Hiroto Kawashima*(2014),Formation mechanism and source apportionment of ammonium and nitrate ions in aerosol using nitrogen isotopes,Earozol Kenkyu,vol.29, pp.110-116
2013
- Nami Kikuchi, Hiroto Kawashima* (2013), Hydrogen isotope analysis of benzene and toluene emitted from vehicles, Atmospheric Environment, vol.72, pp.151-158
2012
- Hiroto Kawashima*, Yuya Haneishi(2012), Effects of combustion emissions from the Eurasian continent in winter on seasonal δ13C of elemental carbon in aerosols in Japan, Atmospheric Environment, vol.46, pp.568-579
2011
- Hiroto Kawashima*, Takahiro Kurahashi(2011), Inorganic ion and nitrogen isotopic compositions of atmospheric aerosols at Yurihonjo, Japan; Implications for nitrogen sources, Atmospheric Environment, vol 45, pp.6309-6316
2010
- Hiroto Kawashima*, Yasuhiro Katayama(2010), Source Evaluation of Diazinon using Stable Carbon Isotope Ratio, Environmental Forensics, vol.11, pp.363-371
Grants
- 2020-,Japan Society for the Promotion of Science(JSPS), Grant-in-Aid for Challenging Research (Pioneering), 20K20639
- 2018-,Japan Society for the Promotion of Science(JSPS), Grant-in-Aid for Scientific Research (B), 18H03393
- 2017-,JSPS, Fund for the Promotion of Joint International Research (Fostering Joint International Research, 16KK0015
- 2015-2018,JSPS, Grant-in-Aid for Scientific Research (B), 15H05121
- 2015-2017,JSPS, Grant-in-Aid for Scientific Research(B), 15H02980
- 2014-2016,The Ministry of the Environment, The Environment Research and Technology Development Fund
- 2014,The Ministry of Economy, Trade and Industry,Research Grant
- 2014-2016,JSPS, Grant-in-Aid for Exploratory Research, 26550070
- 2013-2014,The Ministry of Health Labour and Welfare, Risk Analysis Research on Food and Pharmaceuticals
- 2012-2014,JSPS, Grant-in-Aid for Young Scientists (A), 24681034, etc.