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Research Output 1993 2019

  • 684 Citations
  • 16 h-Index
  • 69 Article
2019
trace metal
isotopic composition
hydrogen
dust
oxygen

Fungal spore involvement in the resuspension of radiocaesium in summer

Igarashi, Y., Kita, K., Maki, T., Kinase, T., Hayashi, N., Hosaka, K., Adachi, K., Kajino, M., Ishizuka, M., Sekiyama, T. T., Zaizen, Y., Takenaka, C., Ninomiya, K., Okochi, H. & Sorimachi, A., 2019 Dec 1, In : Scientific Reports. 9, 1, 1954.

Research output: Contribution to journalArticle

Open Access
Fungal Spores
Air
Nuclear Power Plants
High-Throughput Nucleotide Sequencing
Basidiomycota
2018
1 Citation (Scopus)
nuclear magnetic resonance
resin
aerosol
summer
nitrogen dioxide
1 Citation (Scopus)

Development of an analytical method for the detection of NOz and its application to the atmospheric analysis at a mountain site

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., 2018 Jan 1, In : Bunseki Kagaku. 67, 6, p. 333-340 8 p.

Research output: Contribution to journalArticle

Chemiluminescence
Fluorescence spectroscopy
Air
Lasers
Ozone

Diurnal Variations in Partitioning of Atmospheric Glyoxal and Methylglyoxal between Gas and Particles at the Ground Level and in the Free Troposphere

Mitsuishi, K., Iwasaki, M., Takeuchi, M., Okochi, H., Kato, S., Ohira, S. I. & Toda, K., 2018 Sep 20, In : ACS Earth and Space Chemistry. 2, 9, p. 915-924 10 p.

Research output: Contribution to journalArticle

Glyoxal
Pyruvaldehyde
Troposphere
diurnal variations
troposphere

Humic-like substances global levels and extraction methods in aerosols

Katsumi, N., Miyake, S., Okochi, H., Minami, Y., Kobayashi, H., Kato, S., Wada, R., Takeuchi, M., Toda, K. & Miura, K., 2018 Jan 1, (Accepted/In press) In : Environmental Chemistry Letters.

Research output: Contribution to journalArticle

extraction method
Aerosols
resin
Resins
aerosol

The impacts of “urban-induced heavy rains” on the distribution of deposition fluxes of inorganic acidic substances in the Tokyo metropolitan area in summer

Uchiyama, R., Okochi, H., Kamiya, J., Asai, D., Kaneko, C., Ogata, H. & Katsumi, N., 2018 Feb 1, In : Atmospheric Research. 200, p. 109-116 8 p.

Research output: Contribution to journalArticle

metropolitan area
summer
rainfall
distribution
rain
2 Citations (Scopus)

The seasonal variations of atmospheric 134,137Cs activity and possible host particles for their resuspension in the contaminated areas of Tsushima and Yamakiya, Fukushima, Japan

Kinase, T., Kita, K., Igarashi, Y., Adachi, K., Ninomiya, K., Shinohara, A., Okochi, H., Ogata, H., Ishizuka, M., Toyoda, S., Yamada, K., Yoshida, N., Zaizen, Y., Mikami, M., Demizu, H. & Onda, Y., 2018 Dec 1, In : Progress in Earth and Planetary Science. 5, 1, 12.

Research output: Contribution to journalArticle

resuspension
seasonal variation
autumn
biomass burning
winter
2017
6 Citations (Scopus)

First demonstration of aerial gamma-ray imaging using drone for prompt radiation survey in Fukushima

Mochizuki, S., Kataoka, J., Tagawa, L., Iwamoto, Y., Okochi, H., Katsumi, N., Kinno, S., Arimoto, M., Maruhashi, T., Fujieda, K., Kurihara, T. & Ohsuka, S., 2017 Nov 17, In : Journal of Instrumentation. 12, 11, P11014.

Research output: Contribution to journalArticle

Gamma Rays
Gamma rays
decontamination
Demonstrations
Decontamination
5 Citations (Scopus)

Geochemical and stable isotope characteristics of urban heavy rain in the downtown of Tokyo, Japan

Uchiyama, R., Okochi, H., Ogata, H., Katsumi, N., Asai, D. & Nakano, T., 2017 Sep 15, In : Atmospheric Research. 194, p. 109-118 10 p.

Research output: Contribution to journalArticle

stable isotope
rainwater
typhoon
wet deposition
rain
2 Citations (Scopus)

H and O isotopic differences in typhon and urban-induced heavy rain in Tokyo

Uchiyama, R., Okochi, H., Ogata, H., Katsumi, N., Asai, D. & Nakano, T., 2017 Jul 3, (Accepted/In press) In : Environmental Chemistry Letters. p. 1-7 7 p.

Research output: Contribution to journalArticle

Isotopes
Rain
stable isotope
rainwater
typhoon

High Time-Resolution Monitoring of Free-Tropospheric Sulfur Dioxide and Nitric Acid at the Summit of Mt. Fuji, Japan

Takeuchi, M., Miyazaki, Y., Tanaka, H., Isobe, T., Okochi, H. & Ogata, H., 2017, In : Water, Air, and Soil Pollution. 228, 9

Research output: Contribution to journalArticle

Nitric Acid
Sulfur Dioxide
Sulfur dioxide
Nitric acid
nitric acid

Long-term variations in the distribution of radioactive Cs in plant, soil, stream bottom sand in a small forest in Fukushima prefecture

Kinno, S., Okochi, H., Katsumi, N., Ogata, H., Kataoka, J., Kishimoto, A., Iwamoto, Y., Sorimachi, A. & Tokonami, S., 2017, In : Bunseki Kagaku. 66, 3, p. 163-174 12 p.

Research output: Contribution to journalArticle

Sand
Soils
Needles
Buffers
Decontamination
4 Citations (Scopus)

The impact of air pollutants on rainwater chemistry during “urban-induced heavy rainfall” in downtown Tokyo, Japan

Uchiyama, R., Okochi, H., Katsumi, N. & Ogata, H., 2017 Jun 27, In : Journal of Geophysical Research: Atmospheres. 122, 12, p. 6502-6519 18 p.

Research output: Contribution to journalArticle

Air Pollutants
rainwater
contaminants
Rain
Japan
2 Citations (Scopus)

Ultracompact Compton camera for innovative gamma-ray imaging

Kataoka, J., Kishimoto, A., Taya, T., Mochizuki, S., Tagawa, L., Koide, A., Sueoka, K., Morita, H., Maruhashi, T., Fujieda, K., Kurihara, T., Arimoto, M., Okochi, H., Katsumi, N., Kinno, S., Matsunaga, K., Ikeda, H., Shimosegawa, E., Hatazawa, J., Ohsuka, S. & 6 othersToshito, T., Kimura, M., Nagao, Y., Yamaguchi, M., Kurita, K. & Kawachi, N., 2017 Jan 1, (Accepted/In press) In : Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment.

Research output: Contribution to journalArticle

Gamma rays
Cameras
cameras
gamma rays
Imaging techniques
2016
10 Citations (Scopus)

Atmospheric CO, O3, and SO2 measurements at the summit of Mt. Fuji during the summer of 2013

Kato, S., Shiobara, Y., Uchiyama, K., Miura, K., Okochi, H., Kobayashi, H. & Hatakeyama, S., 2016 Oct 1, In : Aerosol and Air Quality Research. 16, 10, p. 2368-2377 10 p.

Research output: Contribution to journalArticle

Carbon Monoxide
trajectory
atmospheric gas
air
summer
2015
3 Citations (Scopus)

Diurnal variation of atmospheric electric field at the summit of Mount Fuji, Japan, distinctly different from the Carnegie curve in the summertime

Kamogawa, M., Suzuki, Y., Sakai, R., Fujiwara, H., Torii, T., Kakinami, Y., Watanabe, Y., Sato, R., Hashimoto, S., Okochi, H., Miura, K., Yasuda, H., Orihara, Y. & Suzuki, T., 2015 Apr 28, In : Geophysical Research Letters. 42, 8, p. 3019-3023 5 p.

Research output: Contribution to journalArticle

diurnal variations
diurnal variation
electric field
Japan
electric fields
3 Citations (Scopus)

Novel methods for estimating 3D distributions of radioactive isotopes in materials

Iwamoto, Y., Kataoka, J., Kishimoto, A., Nishiyama, T., Taya, T., Okochi, H., Ogata, H. & Yamamoto, S., 2015 Nov 5, (Accepted/In press) In : Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment.

Research output: Contribution to journalArticle

Radioisotopes
Gamma rays
radioactive isotopes
estimating
gamma rays
26 Citations (Scopus)

Recent progress of MPPC-based scintillation detectors in high precision X-ray and gamma-ray imaging

Kataoka, J., Kishimoto, A., Fujita, T., Nishiyama, T., Kurei, Y., Tsujikawa, T., Oshima, T., Taya, T., Iwamoto, Y., Ogata, H., Okochi, H., Ohsuka, S., Ikeda, H. & Yamamoto, S., 2015 Jun 1, In : Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 784, p. 248-254 7 p.

Research output: Contribution to journalArticle

Scintillation counters
Radiation counters
Gamma rays
scintillation
counters
2014
4 Citations (Scopus)

Foliar rinse study of atmospheric black carbon deposition to leaves of konara oak (Quercus serrata) stands

Hara, H., Kashiwakura, T., Kitayama, K., Bellingrath-Kimura, S. D., Yoshida, T., Takayanagi, M., Yamagata, S., Murao, N., Okochi, H. & Ogata, H., 2014 Apr 1, In : Atmospheric Environment. 97, p. 511-518 8 p.

Research output: Contribution to journalArticle

black carbon
forest floor
oak
plateau
defoliation
12 Citations (Scopus)

Individual aerosol particles in and below clouds along a Mt. Fuji slope: Modification of sea-salt-containing particles by in-cloud processing

Ueda, S., Hirose, Y., Miura, K. & Okochi, H., 2014 Feb, In : Atmospheric Research. 137, p. 216-227 12 p.

Research output: Contribution to journalArticle

sea salt
aerosol
particle
sulfuric acid
sulfate
17 Citations (Scopus)

Performance and field tests of a handheld Compton camera using 3-D position-sensitive scintillators coupled to multi-pixel photon counter arrays

Kishimoto, A., Kataoka, J., Nishiyama, T., Fujita, T., Takeuchi, K., Okochi, H., Ogata, H., Kuroshima, H., Ohsuka, S., Nakamura, S., Hirayanagi, M., Adachi, S., Uchiyama, T. & Suzuki, H., 2014 Nov 1, In : Journal of Instrumentation. 9, 11, P11025.

Research output: Contribution to journalArticle

Scintillator
performance tests
field tests
Phosphors
scintillation counters
2013

Determination of polycyclic aromatic hydrocarbons in atmospheric water using stir bar sorptive extraction and HPLC with fluorescence detection

Fujita, M., Okochi, H., Ogata, H., Nagoya, T. & Minami, Y., 2013, In : Bunseki Kagaku. 62, 12, p. 1111-1116 6 p.

Research output: Contribution to journalArticle

Polycyclic Aromatic Hydrocarbons
Fluorescence
Water
Liquid chromatography
Rain
1 Citation (Scopus)
Polycyclic Aromatic Hydrocarbons
Gases
Recovery

Rapid determination of anionic surfactants in atmospheric aerosol in an urban area using an improved methylene blue method

Soda, M., Okochi, H., Ogata, H. & Okawa, H., 2013, In : Bunseki Kagaku. 62, 7, p. 589-594 6 p.

Research output: Contribution to journalArticle

Atmospheric aerosols
Quartz
Anionic surfactants
Methylene Blue
Fibers
2010
10 Citations (Scopus)
diesel
particulate matter
PAH
aromatic compound
vehicle
10 Citations (Scopus)

Comparison of PAHs, Nitro-PAHs and Oxy-PAHs associated with airborne particulate matter at roadside and urban background sites in downtown Tokyo, Japan

Kojima, Y., Inazu, K., Hisamatsu, Y., Okochi, H., Baba, T. & Nagoya, T., 2010 Oct, In : Polycyclic Aromatic Compounds. 30, 5, p. 321-333 13 p.

Research output: Contribution to journalArticle

Roadsides
Particulate Matter
Polycyclic Aromatic Hydrocarbons
Polycyclic aromatic hydrocarbons
1-nitropyrene
2 Citations (Scopus)
Volatile Organic Compounds
Volatile organic compounds
Gas chromatography
Mass spectrometry
Water
2 Citations (Scopus)
divinyl benzene
Styrene
Polycyclic Aromatic Hydrocarbons
Adsorbents
Copolymers
36 Citations (Scopus)

Influence of secondary formation on atmospheric occurrences of oxygenated polycyclic aromatic hydrocarbons in airborne particles

Kojima, Y., Inazu, K., Hisamatsu, Y., Okochi, H., Baba, T. & Nagoya, T., 2010 Aug, In : Atmospheric Environment. 44, 24, p. 2873-2880 8 p.

Research output: Contribution to journalArticle

PAH
particulate matter
particle
diurnal variation
temporal variation

Long-term performance of a solar-powered small automatic rainwater collector and its application to acid deposition monitoring in the southeast mountainside of Mt. Fuji

Maruyama, S., Okochi, H., Takemura, N. & Minami, Y., 2010, In : Bunseki Kagaku. 59, 5, p. 357-362 6 p.

Research output: Contribution to journalArticle

Acids
Monitoring
Rain gages
Rain
Fluxes
2008
3 Citations (Scopus)

Atmospheric occurrence of 2-nitrobenzanthrone associated with airborne particles in central Tokyo

Inazu, K., Nam, V. D., Asato, T., Okochi, H., Hisamatsu, Y., Kobayashi, T. & Baba, T., 2008 Aug, In : Polycyclic Aromatic Compounds. 28, 4-5, p. 562-577 16 p.

Research output: Contribution to journalArticle

Aromatic compounds
1-nitropyrene
Nitrates
Hydrocarbons
Cyclic Hydrocarbons
6 Citations (Scopus)

Effect of atmospheric humic-like substances on the enhanced dissolution of volatile organic compounds into dew water

Okochi, H., Sato, E., Matsubayashi, Y. & Igawa, M., 2008 Mar, In : Atmospheric Research. 87, 3-4, p. 213-223 11 p.

Research output: Contribution to journalArticle

dew
volatile organic compound
dissolution
fulvic acid
water
2007
29 Citations (Scopus)

Adsorption of air pollutants on the grain surface of Japanese cedar pollen

Okuyama, Y., Matsumoto, K., Okochi, H. & Igawa, M., 2007 Jan, In : Atmospheric Environment. 41, 2, p. 253-260 8 p.

Research output: Contribution to journalArticle

pollen
adsorption
Adsorption
Nitric acid
Air
3 Citations (Scopus)

Development of solar-powered rainwater collector and observation of wet deposition fluxes on the mountainside of Mt. Fuji

Funakura, T., Okochi, H., Nagoya, T., Inazu, K., Minami, Y. & Igarashi, Y., 2007, In : Bunseki Kagaku. 56, 9, p. 805-811 7 p.

Research output: Contribution to journalArticle

Fluxes
Rain
polycarbonate
Bottles
Rain gages
1 Citation (Scopus)
pollen
adsorption
Adsorption
Air
air pollutant
1 Citation (Scopus)
Ecosystems
Acids
Water
Nitrates
Nitrogen
2006
10 Citations (Scopus)

Scavenging effect of precipitation on volatile organic compounds in ambient atmosphere

Sato, E., Matsumoto, K., Okochi, H. & Igawa, M., 2006, In : Bulletin of the Chemical Society of Japan. 79, 8, p. 1231-1233 3 p.

Research output: Contribution to journalArticle

Volatile Organic Compounds
Scavenging
Humic Substances
Organic compounds
Rain
2005
17 Citations (Scopus)

Enhanced dissolution of volatile organic compounds into urban dew water collected in Yokohama, Japan

Okochi, H., Kataniwa, M., Sugimoto, D. & Igawa, M., 2005 Oct, In : Atmospheric Environment. 39, 33, p. 6027-6036 10 p.

Research output: Contribution to journalArticle

dew
Volatile organic compounds
volatile organic compound
Dissolution
dissolution
2004
28 Citations (Scopus)

Characteristics of water-soluble components of atmospheric aerosols in Yokohama and Mt. Oyama, Japan from 1990 to 2001

Takeuchi, M., Okochi, H. & Igawa, M., 2004 Sep, In : Atmospheric Environment. 38, 28, p. 4701-4708 8 p.

Research output: Contribution to journalArticle

Atmospheric aerosols
Aerosols
aerosol
Organic carbon
urban site
16 Citations (Scopus)

The enhanced dissolution of some chlorinated hydrocarbons and monocyclic aromatic hydrocarbons in rainwater collected in Yokohama, Japan

Okochi, H., Sugimoto, D. & Igawa, M., 2004 Aug, In : Atmospheric Environment. 38, 26, p. 4403-4414 12 p.

Research output: Contribution to journalArticle

chlorinated hydrocarbon
Aromatic hydrocarbons
aromatic hydrocarbon
rainwater
Rain
2003
9 Citations (Scopus)

Deposition of coarse soil particles and ambient gaseous components dominating dew water chemistry

Takeuchi, M., Okochi, H. & Igawa, M., 2003 May 27, In : Journal of Geophysical Research D: Atmospheres. 108, 10

Research output: Contribution to journalArticle

dew
water chemistry
soils
chemistry
Soils
2 Citations (Scopus)

Transport characteristics of neutralization dialysis and desalination of tap water

Igawa, M., Mikami, K. & Okochi, H., 2003, In : Bulletin of the Chemical Society of Japan. 76, 2, p. 437-441 5 p.

Research output: Contribution to journalArticle

Dialysis
Desalination
Membranes
Water
Ion exchange
2002
8 Citations (Scopus)

Acid fog removes calcium and boron from fir tree: One of the possible causes of forest decline

Igawa, M., Okumura, K., Okochi, H. & Sakurai, N., 2002 Nov 16, In : Journal of Forest Research. 7, 4, p. 213-215 3 p.

Research output: Contribution to journalArticle

Abies
forest decline
Boron
acid deposition
Weather
16 Citations (Scopus)
Fog
formic acid
Rain
Ions
Acids
38 Citations (Scopus)

High frequency and large deposition of acid fog on high elevation forest

Igawa, M., Matsumura, K. & Okochi, H., 2002 Jan 1, In : Environmental Science and Technology. 36, 1, p. 1-6 6 p.

Research output: Contribution to journalArticle

Fog
fog
Nitric Acid
nitric acid
Nitric acid
38 Citations (Scopus)

Potential trace metal-organic complexation in the atmosphere.

Okochi, H. & Brimblecombe, P., 2002 Mar 21, In : The Scientific World Journal. 2, p. 767-786 20 p.

Research output: Contribution to journalArticle

Complexation
Atmosphere
complexation
trace metal
Metals
2 Citations (Scopus)

Selective transport of heavy metal ions across a cation-exchange membrane with a chelating agent in the receiving phase

Igawa, M., Narita, Y. & Okochi, H., 2002 Oct, In : Bulletin of the Chemical Society of Japan. 75, 10, p. 2269-2273 5 p.

Research output: Contribution to journalArticle

Chelating Agents
Heavy Metals
Heavy ions
Metal ions
Cations
19 Citations (Scopus)

Severe leaching of calcium ions from fir needles caused by acid fog

Igawa, M., Kase, T., Satake, K. & Okochi, H., 2002, In : Environmental Pollution. 119, 3, p. 375-382 8 p.

Research output: Contribution to journalArticle

Weather
Fog
fog
Needles
Leaching
5 Citations (Scopus)

Size distribution of dew droplets and dew formation effect on deposition fluxes

Takeuchi, M., Hasegawa, T., Okochi, H. & Igawa, M., 2002 Jun, In : Bulletin of the Chemical Society of Japan. 75, 6, p. 1299-1300 2 p.

Research output: Contribution to journalArticle

Fluxes
Air Pollutants
Wetting
Evaporation