Risk Assessment Strategy Group
Risk Assessment Strategy Group

8 Researchers:
Katsuhide Fujita, Yuichi Iwasaki, Masashi Kamo, Hiroyuki Mano, Naohide Shinohara, Jun-ichi Takeshita,
Akihiro Moriyama
10 Contract Employees
Outline
We are conducting risk assessment research on chemicals (including microplastics), nanomaterials, and SARS-Cov-2 viruses. Specifically, we develop methods for risk assessment necessary for promoting innovation of new materials such as nanomaterials, develop methods for obtaining missing data for risk assessment, evaluate risks in actual environments, and promote pragmatic risk assessment for solving social issues. Our goal is to contribute to the realization of a sustainable society where industry and the environment coexist.
Research Highlights
Methods for Risk Assessment and Management of Chemicals
Development of Toxicity Prediction Methods for Rapid and Efficient Risk Assessments
- Development of mathematical science-based toxicity prediction methods for human health and ecological risk assessment
- Development of a prediction method for Species Sensitivity Distribution (SSD) for quantitative ecological risk assessment
Development of Combined Toxicity and Population-Level Assessment Methods Using Mathematical Models
- Development of models, statistical test theories, and combinatorial optimization methods for assessing the combined exposure effects of chemicals
- Development of assessment methods for population-level ecological risk of chemicals
An illustration of population-level impact due to hazardous chemical exposure
Pragmatic Risk Assessment of Freshwater and Marine Environments
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![]() Sampling at river |
Risk Assessment and Management Using Bioassays
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![]() Devices and species for bioassay |
Environmental risk assessment of microplastics (MP)
- Identification of research gaps necessary for environmental risk assessment of MPs and considerations in risk assessment
- Illustration of the procedures for environmental risk assessment of MPs and conduct trial risk assessment of MPs
Indoor Exposure Assessment
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![]() Measurements in Indoor Environment |
Methods for Testing Toxicity of Nanomaterials
(Carbon nanomaterials, Metal nanoparticles, Cellulose Nanofibers)
Standardization and Publication of Simple Safety Testing Methods of Nanomaterials
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Development of Toxicity Assessment Methods of Cellulose Nanofibers (CNFs)
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![]() TEM image of CNFs |
Measurement and Estimation of exposure parameters for assessing risk of COVID-19 infection in public transportation and mass-gathering events
- Measurement and estimation of ventilation and particle behavior in actual public transportation vehicles, etc.
- Monitoring CO2 concentrations in outdoor and indoor environments in stadiums
- Visualization and quantification of droplets and droplet nuclei using an exhalation and cough simulator
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