Wang, Y., Okochi, H., Tani, Y., Hayami, H., Minami, Y., Katsumi N., Takeuchi M., Sorimachi A., Fujii, Y., Kajino, M., Adachi, K., Ishihara, Y., Iwamoto, Y., Niida, Y. (2023)
Airborne hydrophilic microplastics in cloud water at high altitudes and their role in cloud formation. Environmental Chemistry Letters 21, 3055–3062.
Honda, Y., Saito, Y., Katsumi, N., Nishikawa, M., Takagi, H. (2023) Physicochemical properties of starch in rice flour with different hardening rates of glutinous rice cake
(mochi). Journal of Cereal Science 112, 103687.
Katsumi, N., Kusube, T., Nagao, S., Okochi, H. (2023) Spatiotemporal variation in microplastics derived from polymer-coated fertilizer in an agricultural small river in
Ishikawa Prefecture, Japan. Environmental Pollution 325, 121422.
Katsumi, N., Nagao, S., Okochi, H. (2022) Addition of polyvinyl pyrrolidone during density separation with sodium iodide solution improves recovery rate of small
microplastics (20–150 μm) from soils and sediments. Chemosphere 307, 135730.
Lailati, M., Shang, Y., Huynh, T.Q., Ito, K., Katsumi, N., Mizuuchi, Y., Ino, M., Takashima, T., Nisikawa, U. (2022) Effects of ground bamboo application on weed suppression
and rice production: A 3-year paddy field experiment. CABI Agriculture and Bioscience 3, 20.
Shimada, K., Nohchi, M., Maeshima, K., Uchino, U., Kobayashi, Y., Ono, K., Ogata H., Katsumi, N., Inazu, K., Okochi, H. (2022) Effects of changes in polycyclic aromatic
hydrocarbons (PAHs) emissions and degradation on their concentrations in Tokyo from 2007 and 2016. Scientific Reports 12, 4249.
Takeuchi, M., Tomiyasu, N., Namikawa, M., Tanaka, H., Toda, K., Katsumi, N., Okochi, H. (2022) On-line analysis of free-tropospheric water-soluble acidic gases and
particulate anions on the summit of Mt. Fuji, Japan. Atmospheric Environment 273, 118977.
Katsumi, N., Kusube, T., Nagao, S., Okochi, H. (2021) The input–output balance of microplastics derived from coated fertilizer in paddy
fields and the timing of their discharge during the irrigation season. Chemosphere 279, 130574.
Nishida, S., Katsumi, N., Matsumoto, K. (2021) Prevention of the rise in plasma cholesterol and glucose levels by kaki-tannin and characterization of its bile acid-binding
capacity. Journal of the Science of Food and Agriculture 101, 2117-2124.
Nishikawa, U., Lailati, M., Huynh, T.Q., Shang, Y., Ito, K., Katsumi, N., Mizuuchi, Y., Ino, M. (2021) Effectiveness of ground bamboo mulching in suppressing weeds and
enhancing rice production: a microcosm experiment. Paddy and Water Environment 19, 159–171.
Katsumi, N., Kusube, T., Nagao, S., Okochi, H. (2021) Accumulation of microcapsules derived from coated fertilizer in paddy fields. Chemosphere 267, 129185.
Katsumi, N., Kusube, T., Nagao, S., Okochi, H. (2020) The role of coated fertilizer used in paddy fields as a source of microplastics in the marine
environment. Marine Pollution Bulletin 161, 111727.
Honda, Y., Saito, Y., Mishima, T., Katsumi, N., Matsumoto, K., Enomoto, T., Miwa, S. (2020) Characterization of physicochemical and digestive
properties of starches from various “dainagon” adzuki beans (Vigna angularis) cultivated in Japan. International Journal of Biological Macromolecules 148, 1021–1028.
Sugo, T., Okochi, H., Uchiyama, R., Yamanokoshi, E., Ogata, H., Katsumi, N., Nakano, T. (2019) The role of humic-like substances as atmospheric
surfactants in the formation of summer-heavy rainfall in downtown Tokyo. City and Environment Interactions 3, 100022.
Wada, R., Sadanaga, Y., Kato, S., Katsumi, N., Okochi, H., Iwamoto, Y., Miura, K., Kobayashi, H., Kamogawa, M., Matsumoto, J., Yonemura, S.,
Matsumi, Y., Kajino, M., Hatakeyama, S. (2019) Ground-based observation of lightning-induced nitrogen oxides at a mountaintop in free troposphere. Journal of Atmospheric Chemistry 76,
133–150.
Honda, Y., Yamazaki, T., Katsumi, N., Fujita, N., Matsumoto, K., Okazaki, M., Miwa, S. (2019) Physicochemical properties of starches from lotus
rhizomes harvested in different months. Journal of Applied Glycoscience 66, 51–57.
Katsumi, N., Miyake, S., Okochi, H., Minami, Y., Kobayashi, H., Kato, S., Wada, R., Takeuchi, M., Toda, K., Miura, K. (2019) Humic-like
substances global levels and extraction methods in aerosols. Environmental Chemistry Letters 17, 1023–1029.
Uchiyama, R., Okochi, H., Ogata, H., Katsumi, N., Nakano, T. (2019) Characteristics of trace metal concentration and stable isotopic
composition of hydrogen and oxygen in “urban-induced heavy rainfall” in downtown Tokyo, Japan; The implication of mineral/dust particles on the formation of summer heavy rainfall. Atmospheric
Research 217, 73–80
Kataoka, J., Kishimoto, A., Taya, T., Mochizuki, S., Tagawa, L., Koide, A., Sueoka, K., Morita, H., Maruhashi, T., Fujieda, K., Arimoto, M., Okochi, H.,
Katsumi, N., Kinno, S., Matsunaga, K., Ikeda, H., Shimosegawa, E., Hatazawa, J., Ohsuka, S., Toshito, T., Kimura, M., Yamaguchi, M., Kurita, K., Kawachi, N. (2018)
Ultracompact Compton camera for innovative Gamma-ray imaging. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
921, 1–5.
Katsumi, N., Miyake, S., Okochi, H. (2018) Chemical structural features of humic-like substances (HULIS) in urban atmospheric aerosols
collected from central Tokyo with special reference to nuclear magnetic resonance spectra. Asian Journal of Atmospheric Environment 12, 153–164.
Mochizuki, S., Kataoka, J., Tagawa, L., Iwamoto, Y., Okochi, H., Katsumi, N., Kinno, S., Arimoto, M., Maruhashi, T., Fujieda, K., Kurihara, T.,
Ohsuka, S. (2018) First demonstration of aerial gamma-ray imaging using drone for prompt radiation survey in Fukushima. Journal of Instrumentation 12, P11014.
Uchiyama, R., Okochi, H., Asai, D., Kaneko, C., Ogata, H., Katsumi, N. (2018) The impacts of “Urban-induced heavy rains” on the distribution of
deposition fluxes of inorganic acidic substances in the Tokyo metropolitan area in summer. Atmospheric Research 200, 109–116.
Uchiyama, R., Okochi, H., Ogata, H., Katsumi, N., Asai, D., Nakano, T., (2017) H and O isotopic differences in typhon and urban-induced heavy
rain in Tokyo. Environmental Chemistry Letters 15, 739–745.
Uchiyama R., Okochi, H., Katsumi, N., Ogata, H., (2017) The impact of air pollutants on rainwater chemistry during "Urban-induced heavy
rainfall" in downtown Tokyo, Japan. Journal of Geophysical Research Atmosphere 122, 6502–6519.
Uchiyama R., Okochi, H., Ogata, H., Katsumi, N., Asai, D., Nakano, T. (2017) Geochemical and stable isotope characteristics of urban heavy rain
in the downtown of Tokyo, Japan. Atmospheric Research 194, 109–118.
Okazaki, M., Katsumi, N., Nishiyama, S. Yamazaki, T., Honda, Y., Matsumoto, K., Quevedo, M. A. and Lina, S. B. (2016) Polymorph and
crystallinity disruption of sago starch during gelatinization. SAGO PALM 24, 20–25
Yamazaki, T., Katsumi, N., Fujita, N., Matsumoto, K., Okazaki, M., Miwa, S., Honda, Y. (2016) Physicochemical Properties of Starches from
Different Lotus Cultivars in Japan: Shinashirobana cultivar and Kanasumi-line No. 20. Journal of Applied Glycoscience 63, 61–68.
Katsumi, N., Yonebayashi, K., Okazaki M., Nishiyama, S., Nishi, T., Hosaka, A., Watanabe, C. (2016) Characterization of soil organic matter
with different degrees of humification using evolved gas analysis-mass spectrometry. Talanta 155, 28–37.
Katsumi, N., Yonebayashi, K., Okazaki, M. (2016) Effects of heating on composition, degree of darkness, and stacking nanostructure of soil
humic acids. Science of the Total Environment 541, 23–32.
Nishiyama, S., Okazaki, M., Katsumi, N., Honda, Y., Tsujimoto, M. (2015) Surface charge on sago starch granules. SAGO PALM 23,
77–83.
Okazaki, M., Katsumi, N., Yonebayashi, K., Nishi, T., Honda, Y., Igura, M. (2015) Dynamics of water molecules in sago starch determined by 1H
NMR. SAGO PALM 23, 63–68.
Okazaki, M., Nishiyama, S., Katsumi, N., Kawashima, F., Yonebayashi, K. (2015) Expansion of the cavity in sago starch crystalline structure by
water molecules. SAGO PALM 23, 69–76.
Katsumi, N., Yonebayashi, K., Okazaki, M. (2015) Aluminum complexation by soil humic acids, with special reference to chelating ability.
Pedologist 59, 2–11.
Katsumi, N., Yonebayashi, K., Okazaki, M. (2015) Evaluation of stacking nanostructure in soil humic acids by analysis of the 002 band of their
X-ray diffraction profiles. Soil Science and Plant Nutrition 61, 603–612.
Katsumi, N., Yonebayashi, K., Fujitake, N., Okazaki, M. (2015) Relationship between stable carbon and nitrogen isotope ratios of humic acids
extracted from Andisols and non-Andisols. Catena 127, 214–221.
Okazaki, M., Katsumi, N., Nishiyama, S., Palermo, L. M., Igura, M., (2014) Thermal Denaturation Properties of Non-Spiny and Spiny Sago Palm
Starches under Low Moisture Content. SAGO PALM 22, 31–37.
Katsumi, N., Okazaki, M., Yonebayashi, K., Kawashima, F., Nishiyama, S., Nishi, T., (2014) New proposal for “crystalline index” of starch. SAGO
PALM 22, 25–30.
Yonebayashi, K., Katsumi, N., Nishi, T., Okazaki, M., (2014) Activation of nitrogen-fixing endophytes is associated with the tuber growth of
sweet potato. Mass Spectrom (Tokyo) 3, A3002.
Okazaki, M., Quevedo, M. A., Lina, B. S., Ookawa, T., Katsumi, N., (2013) Breaking resistance of sago palm leaflets. SAGO PALM 21,
8–13.
Okazaki, M., Yonebayashi, K., Katsumi, N., Kawashima, F., Nishi. T., (2013) Does sago palm have high δ13C value? SAGO PALM 21, 1–7.
Thapa P. S., Hanzawa K., Katsumi N., Momose T., Yanai S. (2023) Characteristics of deep-seated landslide and sediment-runoff prevention function of cedar forest. Bulletin of
Ishikawa Prefectural University 6, 1-13.
Katsumi, N. (2025) Fertilizers and Microplastics Contamination of Crops. In P. Avino, C. D. Fiore, S. Farris (ed.) Microplastics in Agriculture and Food Science:
Methods for Identification and Remediation. Elsevier