Research Summary

Selected Publications

• 1. Hamamoto, S., Takatsu, M., Fujiwara, H., Okada, H.,Ohkochi, T., Watanabe, S., Oura, M., Seto, Y.
  "Visualization of heated latent fingerprints by synchrotron radiation soft X-ray photoemission electron microscopy"
  Analyst, 151, 1163-1171 (2026)
• 2. Watanabe, S., Murakami, T., Muratsu, S., Saito, T., Seto, Y.
  "In vitro metabolic profiling of 18 semi-synthetic cannabinoids—hexahydrocannabinol (HHC) and its analogs—with identification in an authentic hexahydrocannabiphorol (HHCP) urine sample
  Clinical Chemistry, 71, 1158-1168 (2025)
• 3. Yasuo Seto, Toshio Nakanishi, Shimpei Watanabe, Seiji Muratsu, Hiroyuki Fujiwara, Hideya Okada, and Masahisa Takatsu,
  "Development ofSynchrotron Radiation X-ray Analysis for RIKEN Forensic Science Group,"
  ADVANCES IN X-RAY CHEMICAL ANALYSIS,JAPAN, 56, 9-25 (2025).
• 4. Watanabe, S., Yamane, H., Iwai, T., Seto, Y.
  "In vitro metabolic profiling of new synthetic cannabinoids, ADB-FUBIATA, AFUBIATA, CH-FUBIATA, and CH-PIATA"
  Archives of Toxicology, 97, 3085-3094 (2023)
• 5. Komatsu, H., Nakanishi, T., Seto, Y., Nishiwaki, Y.
  "Characterization of metal components in white-based @polyester single fibers by X-ray fluorescence spectrometry and X-ray absorption fine structure analysis utilizing synchrotron radiation for forensic discrimination"
  Spectrochimica Acta B: Atomic Spectroscopy, 209, 106785 (2023)
• 6. Watanabe, S., Kikuchi, T., Iwai, T., Matsushita, R., Takatsu, M., Honda, S., Nakanishi, T., Nakamura, Y., Seto, Y.
  "Single crystal X-ray analysis using the crystalline sponge method for direct structure determination of new and earlier synthetic cannabinoids including OXIZIDs, AKB48, and JWH-424 from a trace sample"
  Forensic Chemistry, 33, 100480 (2023)
• 7. Iwai, T., Honda, S., Watanabe, S., Matsushita, R., Nakanishi, T., Takatsu, M., Moriwaki, T,, Yabashi,, M., Ishikawa, T., Seto, Y.
  "Forensic discrimination of drug powder based on drug mixing condition determined using micro Fourier transform infrared spectroscopy"
  ACS Omega, 8, 4285－4293 (2023)
• 8. Matsushita, R., Nakanishi, T., Watanabe, S., Iwai, T., Takatsu, M., Honda, S., Funaki, K., Ishikawa, T., Seto, Y.
  "Effect of machine washing on the chromatography parameters of polyester fiber gel permeation"
  ACS Omega, 7, 38789－38795 (2022)
• 9. Matsushita, R., Watanabe, S., Iwai, T., Nakanishi, T., Takatsu, M., Honda, S., Funaki, K., Ishikawa, T., Seto, Y.
  "Forensic discrimination of polyester fibers using gel permeation chromatography"
  Forensic Chemistry, 30, 100428 (2022)
• 10. Seto, Y.
  "On-site detection of chemical warfare agents"
  Handbook of the Toxicology of Chemical Warfare Agents', 3rd ed., ed. by Gupta, R. C., Elsevier, Amsterdam, Chapter 60, 983－1003 (2020)

Lab Members

Careers

Position	Deadline
Seeking a few Research Scientist or Postdoctoral Researcher position (C21-0205)	Open until filled

Contact Information