NAKAI Satoshi


Faculty of Environment and Information Sciences, Division of Natural Environment and Information



Date of Birth


Research Fields, Keywords

Environmental Epidemiology, Environmental Health, Exposure Assessment, Environmental Health Risk Management, Air Pollution, Indoor Environment

Mail Address

E-mail address


The Best Research Acheivement as Researcher Life 【 display / non-display

The Best Research Achievement in the last 5 years 【 display / non-display

Graduating School 【 display / non-display


    The University of Tokyo   Faculty of Medicine   Health Sciences   Graduated

Graduate School 【 display / non-display


    The University of Tokyo  Graduate School, Division of Medical Sciences  School of Health Sciences  Doctor Course  Completed

Degree 【 display / non-display

  • Doctor of Health Sciences -  The University of Tokyo

External Career 【 display / non-display

  • 1989.04

    University of Tokyo   Research Assistant  

Academic Society Affiliations 【 display / non-display

  • 2000

    International Society of Exposure Science

  • 2000

    The Japanese Society of Clinical Ecology

  • 1997

    Society of Infoor Environment, Japan

  • 1997

    International Society for Environmental Epidemiology

  • 1997

    The Society for Epidemiologic Research

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Field of expertise (Grants-in-aid for Scientific Research classification) 【 display / non-display

  • Environmental impact assessment

  • Hygiene and public health


Research Career 【 display / non-display

  • Exposure Assessment for Epidemiological and Health Risk Study

    Project Year:  -   

  • Epidemiological Study on the health effects of outdoor and indoor air pollution

    Project Year:  -   

Papers 【 display / non-display

  • Development of Land Use Regression Models for Assessing Exposure to NO<sub>2</sub>, NO<sub>x</sub> and SPM, and Their Applicability to Air Pollution Epidemiologic Studies in Japan

    Fukuo Aya, Hanaoka Koki, Arai Tomohiro, Nakai Satoshi

    Journal of Japan Society for Atmospheric Environment / Taiki Kankyo Gakkaishi ( Japan Society for Atmospheric Environment )  53 ( 5 )   153 - 164   2018  [Refereed]

    Joint Work

     View Summary

    <p>The Land Use Regression (LUR) model is now used for exposure assessment in air pollution epidemiologic studies rather than measuring/monitoring pollutants. However, there have been few epidemiologic studies using the LUR models and characteristics of the model have been unclear in Japan. To determine whether the LUR model can be applicable to air pollution epidemiologic studies as the method of exposure assessment in Japan, we developed the LUR models for NO<sub>2</sub>, NO<sub>x</sub>, and SPM in Yokohama.</p><p>The annual means of NO<sub>x</sub>, NO<sub>2</sub> or SPM measured at 29 monitoring stations in Yokohama city in 2005 were regressed on land use data such as residential/industrial area, traffic volume, etc, using a manual stepwise method. The adjusted <i>R</i><sup>2</sup> values for the NO<sub>x</sub> and NO<sub>2</sub> regressions were 0.88 and 0.81, respectively. The adjusted <i>R</i><sup>2</sup> for the SPM regression was 0.55. The distributions of the concentrations were mapped using Arc-GIS software. The LUR models we developed and the concentration maps may be valid compared to other models and the LUR models developed in the western countries. However, a much higher resolution for the concentration distribution based on the LUR models might be necessary for epidemiological studies of traffic-related air pollution in Japan. We should be necessary to consider the measurement points, etc, necessary for developing the LUR models.</p>

    DOI CiNii

  • Development of the novel passive sampler (Semi-active sampler) for collecting nicotine in the ETS

    SUZUKI Yoshihiro, NOGUCHI Miyuki, FUKUSHIMA Yasuhiro, AMAGAI Takashi, AKIYAMA Yukio, ENOMOTO Takanori, YAMASAKI Akihiro, NAKAI Satoshi

    Indoor Environment ( Society of Indoor Environment, Japan )  21 ( 1 )   1 - 8   2018  [Refereed]

    Joint Work

     View Summary

    A new sampling method of nicotine in ETS was developed by using a semi-active sampler, which enables simultaneous collection of nicotine in the gas phase and that adsorbed on the fine particles in the ETS. The semi-active sampler is a tube-type sampler made of aluminum in which a polyurethane form (PUF) was placed as an adsorption medium for nicotine. Air sample is introduced to the sampler by the flow induced by a small fun installed at the outlet of the sampler. Nicotine of both gas phase and adsorbed on particulates in the sampled air would be captured onto the adsorbent, PUF. The PUF used as an adsorbent was pretreated with L-ascorbic acid, which improved the holding performance of the collected nicotine onto the PUF. The average concentration of nicotine in a smoking room sampled and determined by the active sampling method using XAD-4 showed a good linear relationship (<i>R</i><sup>2</sup> = 0.99) with the amount of nicotine collected by the semi-active sampling method. The sampling rate of the semi-active sampler was determined 578 mL/min, which is 60 times greater than that of a conventional passive sampler (modified MoNIC). The present method was applied to some field studies on the measurement of personal exposure to nicotine in the ETS, with which the inhaled cigarette equivalent (CE) by a passive smoker can be estimated.

    DOI CiNii

  • Prediction of the VOC Concentration in Vehicle Interiors While Driving Mode

    Tatsu Kouichi, Naito Toshiyuki, Ota Yasuhiko, Nakai Satoshi

    Transactions of Society of Automotive Engineers of Japan ( Society of Automotive Engineers of Japan )  48 ( 2 )   497 - 503   2017  [Refereed]

    Joint Work

     View Summary

    It is important to the VOC concentration reduction in the cabin that we predict the cabin from the VOC measurements of the interior part.This research studies that we predict VOC concentration in the cabin of driving mode. In this study, we measured VOCs concentration of vehicle interior in parking mode and driving mode, it was to clarify the change in VOCs concentration .And, we studied clarify the mechanism for the concentration change (1.vehicle interior temperature by air conditioner operation 2.vehicle ambient temperature by air conditioner operation. 3. VOC dissolved amount of the condensed water of heat exchanger. 4.the amount of adsorbed to heat exchanger. 5.Ventilation rate) , and we propose a method to prediction VOCs concentration of vehicle interior in driving mode.

    DOI CiNii

  • Detection of exposure events to environmental tobacco smoke employing portable semiconductor monitors

    Sekine Y.,Ota S., Sato H., Noguchi M., Nakai S., Yanagisawa Y.

    Indoor Environment ( Society of Indoor Environment, Japan )  19 ( 1 )   49 - 57   2016.06  [Refereed]

    Joint Work

  • Prediction of the VOC concentration in vehicle interior on the basis of the emissions from inner components

    Tatsu K, Nakai S, Matsunaga K, Naito T, Sato K, Hoshino K, Sone T, Iwasaki T, Usui S

    Indoor Environment ( Society of Indoor Environment, Japan )  19 ( 1 )   23 - 36   2016.06  [Refereed]

    Joint Work

    DOI CiNii

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Review Papers 【 display / non-display

  • On the nature of the sick house syndrome

    Satoshi NAKAI

    Journal of Japan Association on odor environment ( Japan association on odor environment )  50 ( 3 ) 177 - 185   2019.05

    Introduction and explanation (scientific journal)   Single Work

  • Methodologies and Uncertainty for Elucidation of Health Effects of Environmental Pollution

    NAKAI Satoshi

    Environmental information science ( Environmental information science Center )  41 ( 4 ) 4 - 9   2013.01

    Introduction and explanation (scientific journal)   Single Work


  • Environment and Health : Survey, Statistics and Data Analysis in Air Pollution Epidemiology

    NAKAI Satoshi

    Japanese Journal of Biometrics ( The Biometric Society of Japan )  32 ( Special Issue ) S89 - S102   2011.05

    Introduction and explanation (scientific journal)   Single Work

    DOI CiNii

  • Exposure and Health Effect Assessment of Cadmium in Japan

    KAYAMA Fujio,HORIGUCHI Hyogo,SASAKI Satoshi,NAKAI Satoshi

    Biomedical research on trace elements ( Japan Society for Biomedical Research on Trace Elements )  19 ( 3 ) 235 - 242   2008

    Introduction and explanation (scientific journal)   Joint Work

    DOI CiNii

Academic Awards Received 【 display / non-display

  • The outstanding published paper in 2007 demonstrating an application of risk assessment (presented by yje risk assessment specialty section at the annual meeting of the society of toxicology)


Grant-in-Aid for Scientific Research 【 display / non-display

  • Grant-in-Aid for Scientific Research(C)

    Project Year: 2014.04  -  2017.03 

Preferred joint research theme 【 display / non-display

  • Exposure assessment and Health effects due to indoor air pollutants


Council/Academic activity outside the university 【 display / non-display

  • Asian Chapter of International Society of Exposure Sciences


    Society   President

Social Contribution(Extension lecture) 【 display / non-display

  • 2015 Annual Meeting of the Society of Indoor Emvironment, Japan


  • 2010 Annual Meeting of the Society of Indoor Environment, Japan