T
Tomohiko Isobe
Researcher at National Institute for Environmental Studies
Publications - 151
Citations - 7978
Tomohiko Isobe is an academic researcher from National Institute for Environmental Studies. The author has contributed to research in topics: Polybrominated diphenyl ethers & Medicine. The author has an hindex of 42, co-authored 139 publications receiving 6443 citations. Previous affiliations of Tomohiko Isobe include Hokkaido University & Tokyo University of Agriculture and Technology.
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Journal ArticleDOI
Plastic Resin Pellets as a Transport Medium for Toxic Chemicals in the Marine Environment
Yukie Mato,Tomohiko Isobe,Hideshige Takada,Haruyuki Kanehiro,Chiyoko Ohtake,Tsuguchika Kaminuma +5 more
TL;DR: Field adsorption experiments using PP virgin pellets demonstrated significant and steady increase in PCBs and DDE concentrations throughout the six-day experiment, indicating that the source of PCBs, DDE, and nonylphenols is ambient seawater and that adsor adaptation to pellet surfaces is the mechanism of enrichment.
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Distribution and behavior of nonylphenol, octylphenol, and nonylphenol monoethoxylate in Tokyo metropolitan area: their association with aquatic particles and sedimentary distributions.
TL;DR: NP and OP were widely distributed in the river sediments in Tokyo, and relatively high concentrations (0.5-13.0 microg/g dry) of NP were observed in a long reach (approximately 10 km) in the Sumidagawa River.
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Baseline Profile of Participants in the Japan Environment and Children's Study (JECS).
Takehiro Michikawa,Hiroshi Nitta,Shoji F. Nakayama,Shin Yamazaki,Tomohiko Isobe,Kenji Tamura,Eiko Suda,Masaji Ono,Junzo Yonemoto,Miyuki Iwai-Shimada,Yayoi Kobayashi,Go Suzuki,Toshihiro Kawamoto,Toshihiro Kawamoto +13 more
TL;DR: The data on the characteristics of the mothers and children the authors studied showed marked similarity to those obtained from Japan’s 2013 Vital Statistics Survey, which established one of the largest birth cohorts in the world.
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Levels and distribution of organophosphorus flame retardants and plasticizers in fishes from Manila Bay, the Philippines.
Joon-Woo Kim,Tomohiko Isobe,Kwang-Hyeon Chang,Atsuko Amano,Rommel Maneja,Peter B. Zamora,Fernando P. Siringan,Shinsuke Tanabe +7 more
TL;DR: Levels of triphenyl phosphate (TPhP) in demersal species showed a positive correlation with δ(15)N, indicating that TPhP was adsorbed onto the particle, settled down to the bottom sediment and accumulated through the benthic food web rather than the pelagic.
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Determination of estrogens and their conjugates in water using solid-phase extraction followed by liquid chromatography-tandem mass spectrometry
Tomohiko Isobe,Hiroaki Shiraishi,Masaru Yasuda,Akiko Shinoda,Hiroshi Suzuki,Masatoshi Morita +5 more
TL;DR: An analytical procedure for the determination of steroid estrogens and their conjugates was developed and applied to aqueous environmental samples and some of the sulfates and free compounds were detected in environmental samples, whereas most of the conjugs were below the detection limits.