Environmental Chemistry Lab, Department of Applied Chemistry,
Faculty of Science and Technology, Keio University
Led by Tomoaki OKUDA, Ph.D.
News
Home > News
2023
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PUBLICATION
2023/6/21
Publication #97 has been accepted! This is the content of the six-year research on the charged state of radioactive particles!
Particle Charging State
【YouTube】KPFM measurement of a single particle (Research introduction by Ms. Shinke) -
AWARD
2023/4/19
The "2023 Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology" was awarded for contributions to the mass-gathering event under the COVID-19 pandemic!
【Super Practical Human and Environmental Research enforcing Application and Social Implementation】 -
PUBLICATION
2023/4/17
Publication #95 and #96 have been published one after another! The application of our laboratory's cyclone technology is expanding!
【YouTube】PAHs analysis (Research introduction by Mr. Jing) 【YouTube】Transportable cyclone (Research introduction by Mr. Yoon) -
AWARD
2023/4/12
We received the "Best Lecture in 2022" at the Faculty of Science and Engineering Faculty Meeting (course name: "Environmental Chemistry")! This is the second time Prof. Okuda has received this award after the year 2015!
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INFORMATION
2023/4/1
【Social Implementation】The official Keio University goods version of the "Matoi" mask, created through joint research with ROKI Corporation, has been ranked 【No.1 for 19 consecutive months】 on the Keio University official goods online store!
2022
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INFORMATION
2023/3/30
【Introduction to JREP】Our laboratory supports the activities of JREP (Keio Junior Research Program). The video introducing JREP activities is now available on the Research Introduction YouTube Channel!
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PUBLICATION
2023/3/13
【Joint Research within the University】Publication #94 has been published! Our cyclone technology was applied in the joint research with Associate Professor Hiruta of Analytical Chemistry Laboratory!
【Toxicity Assessment of Particulate Matter】 -
MEDIA
2023/3/2
【Nikkei Newspaper】The article "NSW and Keio University Launch Joint Research to Develop Air Quality Management Solutions" was posted on theNikkei Shimbun website.
【Super Practical Human and Environmental Research enforcing Application and Social Implementation】 -
PUBLICATION
2023/2/16
Publication #93 has been published! Our cyclone technology was applied in a joint research with Prof. Ishihara of Hiroshima University!
【Toxicity Assessment of Particulate Matter】 -
PUBLICATION
2022/12/17
Publication #92 has been published! The cyclone technology of our laboratory was utilized in a joint research project with Kyoto University and others!
【Toxicity Assessment of Particulate Matter】
【YouTube】 Transportable cyclone (Research Introduction by Youn) -
INFORMATION
2022/12/13
【Laboratory Introduction】New videos are now available on our Research Introduction YouTube Channel! Currently #01 through #35 are available! #33 is "Charged state of inhaled drug particles and contribution to lung deposition", #34 is "Hazard assessment of atmospheric particulate matter using novel filter technology", #35 is "AAAR2022 International Annual Meeting Participation Report"!
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INFORMATION
2022/12/12
【Social Implementation】【No.1 Seller】The official Keio University goods version of the "Matoi" mask, created through joint research with ROKI Corporation, has been ranked No. 1 in sales for 15 consecutive months on the Keio University official goods online store! Now you can choose whether the pen mark is printed or embossed!
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INFORMATION
2022/11/19
【Exhibition Information】2022/12/2(Fri.) We will exhibit our 【Super Practical Human and Environmental Research enforcing Application and Social Implementation】at The 23rd KEIO TECHNO-MALL 2022, which will be held at Hall E2, Tokyo International Forum. This will be the first time in three years. Please come and visit us!
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INFORMATION
2022/11/9
【Laboratory Introduction】New videos are now available on our Research Introduction YouTube Channel! Currently #01 through #32 are available! #31 is "Investigation of The Relationship Between Olfactory Disturbance and Multiple Chemical Sensitivity By Anticancer Drug Treatment", #32 is "Fixed-point Observation of Atmospheric Particle Charging"!
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MEDIA
2022/10/16
【Nikkei Newspaper】Okuda's comments on the PM2.5 problem in subways and particulate matter were featured in the article "'Threat of Particulates' Ventilation or Interception".
【Super Practical Human and Environmental Research enforcing Application and Social Implementation】 -
INFORMATION
2022/10/16
【Social Implementation】【No.1 Seller】The official Keio University goods version of the "Matoi" mask, created through joint research with ROKI Corporation, has been ranked No. 1 in sales for 12 consecutive months on the Keio University official goods online store! Now you can choose whether the pen mark is printed or embossed!
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INFORMATION
2022/10/5
【Doctoral Degree Awarded】Mr. Alimov, a doctoral student from Uzbekistan, has been awarded a doctoral degree! He is the first doctoral student from Okuda Lab. Congratulations! We wish him all the best in his home country!
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PUBLICATION
2022/9/12
Publication #91 has been accepted! This is the result of a research project led by Mr. Alimov and Mr. Youn to evaluate the performance of small cyclones and to conduct cell exposure experiments on collected powders!
【Toxicity Assessment of Particulate Matter】
【YouTube】 Portable Cyclone (Research Introduction by Youn) -
INFORMATION
2022/9/10
【Job Openings】【Ended】Applications for specially-appointed faculty and temporary staff positions have been closed. Thank you for the many applications.
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INFORMATION
2022/9/10
【Social Implementation】【No.1 Seller】The official Keio University goods version of the "Matoi" mask, created through joint research with ROKI Corporation, has been ranked No. 1 in sales for 12 consecutive months on the Keio University official goods online store! The product was also featured in Keio's internal PR magazine, "Juku"!
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INFORMATION
2022/8/6
【Laboratory Introduction】New videos are now available on our YouTube channel! Currently #01 to #30 are available! The style has changed a little since the new year! The #29 is "Application of Acoustic Standing Wave to Manipulation of Airborne Particles" and #30 is "HPLC Detection Method for PAHs"!
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PUBLICATION
2022/8/2
Publications #89 and #90 have been accepted! These are the results of joint research with Associate Professor Ishihara of Hiroshima University on the effects of PM2.5 on skin, investigated by cyclone collection!
【Toxicity Assessment of Particulate Matter】 -
MEDIA
2022/6/12
【TBS】NEWS23 "No Progress in De-masks... Resumption of Loud Cheering at Soccer Stadiums"
The experiment to study the effect of masks during loud cheering was broadcasted.
【Super Practical Human and Environmental Research enforcing Application and Social Implementation】 -
MEDIA
2022/6/11
【NHK】News7 "J-League Cheering Revival"
The experiment to study the effect of masks during loud cheering was broadcasted.
【Super Practical Human and Environmental Research enforcing Application and Social Implementation】 -
INFORMATION
2022/6/1
Project Senior Assistant Professor Chiharu Nishida and Project Researcher Bin Mohammad Nor Muhammad Aiman have arrived! Member list for 2022 has been updated.
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MEDIA
2022/5/24
【NHK】NEWS WATCH 9 " J-League to Ease Up on Voice Cheering"
The experiment to study the effect of masks during loud cheering was broadcasted.
【Super Practical Human and Environmental Research enforcing Application and Social Implementation】 -
INFORMATION
2022/4/1
Assistant Professor Tatsuhiro Mori has arrived.
The list of members for 2022 has been updated.
2021
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INFORMATION
2022/3/31
【Laboratory Introduction】New videos are now available on our YouTube Channel! Currently #01 through #26 are available! #24 is "Undergraduate Research Interns: New Filter", #25 is "Evaluation of Cellular Responsiveness of Aroma Components", #26 is "Development of low-cost mask fit tester"！
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PUBLICATION
2022/3/30
Publication #88 has been accepted. This is the result of D2 Jing's compilation of the results from Saito, a master's graduate in 2021!
【Toxicity Assessment of Particulate Matter】
【YouTube】Chemical state analysis of particles by XAFS (Introduction of research by Mr. Saito) -
INFORMATION
2022/3/30
【Social Implementation】【No.1 Seller】The official Keio University goods version of the "Matoi" mask, created through joint research with ROKI Corporation, has been the No. 1 selling item for 7 months in a row on the Keio University official goods online store!
Also featured in the campus's PR magazine, "Juku"! -
PUBLICATION
2022/2/17
Publication #86 has been accepted. M2 Mr. Kurihara and Project Research Associate Iwata have done a great job! Mr. Kurihara has published two peer-reviewed academic papers in English during his undergraduate and graduate studies!
【Surface area of particles and Ice nucleation】
【YouTube】Surface area of particles (Research introduction by Mr. Kurihara) -
INFORMATION
2021/12/24
【Social Implementation】"Ventilation Measurement" was featured in Keio University's efforts to fully operate the campus in 2022!
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INFORMATION
2021/9/17
【Ventilation Survey】The results of the ventilation survey at the Ryushi Memorial Hall, conducted in collaboration with the Ota Ward Cultural Promotion Association, and the report on the ventilation survey and mask-wearing verification experiment during events organized by the association are now available.
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INFORMATION
2021/9/15
【Social Implementation】The Keio University official goods version of the "纏 (MATOI)" mask, which was created through joint research with ROKI Co., Ltd, is now available in the Keio University official goods online store!
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PUBLICATION
2021/9/10
Publication #84 has been accepted. This is the result of Mr. Sugimoto, a master's degree student in 2020! 【Toxicity Assessment of Particulate Matter】
【YouTube】Measurement of oxidation ability of particles (Research introduction by Mr. Sugimoto) -
MEDIA
2021/8/22
【Yomiuri Shimbun】Commented on the article "Ventilation Conditions at a Glance with an App".
Press Release "Proposing the use of CO2 concentration as a measure against infectious diseases" -
PUBLICATION
2021/7/21
Publication #83 has been accepted. This is the result of Mr. Kurihara (M2) and Project Research Associate Iwata! Surface area of particles and Ice nucleation
【YouTube】Surface area of particles (Research introduction by Mr. Kurihara) -
MEDIA
2021/6/18
【NHK】Ohayo Nippon "Performance test of a new mask to control droplets while improving breathability in Kawasaki City"
The press release of May 24 was broadcasted!
【Super Practical Human and Environmental Research enforcing Application and Social Implementation】 -
MEDIA
2020/5/26
【Many Media Coverage】The press release of May 24 was published in the Nikkei Shimbun, Nikkan Kogyo Shimbun, Ibaraki Shimbun, Impress Watch and many others
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MEDIA
2021/5/25
【NHK】Asaichi
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We cooperated in the experiment "Examining the effects of different types and materials" -
PRESSRELEASE
2021/5/24
【Press Release】Development of a "Mask with Both Droplet Control and Breathability", and Start of a Project to Evaluate Its Effectiveness in Preventing Infections and Its Comfortability -Demonstration Test at Kashima Stadium-
【Super Practical Human and Environmental Research enforcing Application and Social Implementation】 -
MEDIA
2021/5/18
【NHK】Asaichi
Experiments on masks of different materials and shapes: How effective are masks in blocking aerosols? We cooperated in the experiment. -
INFORMATION
2021/5/15
【Lab Introduction】We've got a lot of new videos coming out on Okuda Lab YouTube channel!! We're now showing #01 to #14! #13 is about the research environment and #14 is about the research theme!
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PUBLICATION
2021/5/6
Publication #82 has been accepted. Proposed use of CO2 concentration as a measure against infectious diseases! 【Press Release】 【Nikkei Newspaper Article】
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PUBLICATION
2021/4/22
Publication #81 has been accepted. We participated in a research team related to the toxicity of particles. 【Press Release】
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INFORMATION
2021/4/14
【Ventilation Measurement】It was conducted in cooperation with Ota City Cultural Promotion Association. -Report on the results of a ventilation survey at a facility managed by the Ota Ward Cultural Promotion Association- was published.
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INFORMATION
2021/4/1
Dr. Kenji MIKI was appointed.
2020
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MEDIA
2021/3/22
【KAWASAKI FM】Appeared in the nature education program "TO THE NATURE" for two consecutive weeks.
【3/19 Broadcast】【3/12 Broadcast】 (About 20 minutes each time) -
PUBLICATION
2021/3/22
Publication #80 has been accepted. I participated in a research team on the risk of COVID-19 infection and the effectiveness of countermeasures in large gatherings. 【Press release】 【Nikkei Newspaper】
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MEDIA
2021/3/19
【TV Asahi】Super J Channel
A karaoke box ventilation survey was introduced. -
INFORMATION
2021/3/8
【Laboratory Introduction】We've got a lot of new videos coming out on Okuda Lab YouTube channel !! We're now showing #01 to #13!
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INFORMATION
2021/3/8
【Ventilation Measurement 】It was conducted in cooperation with Japan Clean Air Association. -Video Overview of The Karaoke Box Ventilation Measurement- was published.
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MEDIA
2021/3/2
【NHK】Asaichi "Visualization Shows the Infection Risk of Singing" We Cooperatived on Video "Karaoke Box Ventilation Measurement" and flip boad.
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PUBLICATION
2021/2/18
Publication #79 has been accepted. Here are the accomplishments of Alimov,D2 and Kusakari,B4,2019! The constant flow multiple sampler using sonic nozzles has already been put to practical use in our laboratory!
【Toxicity Assessment of Particulate Matter】 【Worldwide Application of Our Environmental Research】 -
MEDIA
2021/2/18
【NHK】Shutoken-Network "The Seeking of Underground Idols" We Cooperatived on ventilation investigation of event hall and technology to visualize mask effects.
【Related Videos】"Ventilation Measurement in Live Performance Hall" "Particle Visualization and Measurement" YouTube -
MEDIA
2021/2/18
【NHK】Asaichi "Sequel: Measures Against Aerosols" We cooperated on flip boad. Okuda believes that long-term use and reuse of masks should be avoided during normal times, and that reuse of non-woven masks is only an option when supplies are tight.
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MEDIA
2021/2/16
【NHK】NEWS Shibu-5ji "Don't lose to Corona! Fighting underground idols" We Cooperatived on ventilation investigation of event hall and technology to visualize mask effects.
【Related Videos】"Ventilation Measurement in Live Performance Hall" "Particle Visualization and Measurement" YouTube -
MEDIA
2021/2/15
【NHK】Asaichi "How to Wear a Mask Effectively?" Cooperated in experiments and comments. Okuda does not recommend the use of a double mask, but rather the fit of the mask to the face is important. It is also important to pay attention to breathlessness.
【Related Videos】"Investigating The Effectiveness of a Mask-fitting Product." -
MEDIA
2021/2/13
【TBS】"Zukandetsutaeru-News" We cooperated on a technique for visualizing mask effects and comments on the behavior of particles in the air.
【Related Videos】Particle Visualization and Measurement" YouTubee -
PUBLICATION
2021/2/4
The contents of Publication #77 have been widely reported in various media! In relation to "Toxicity Assessment of Particulate Matter", this publication shows that particulate matter may increase the expression of ACE2 and TMPRSS2, which are associated with the entry of a new coronavirus (SARS-CoV-2) into the body!
【Kyoto Shimbun】 【Sankei Shimbun】 【Asahi Shimbun】 -
PUBLICATION
2021/1/26
Publication #78 has been accepted. This publication investigates the corneal damage and inflammation induced by particulate matter in the eye in relation to "Toxicity Assessment of Particulate Matter".
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MEDIA
2021/1/11
【Research Introduction for Junior and Senior High School Students】In the project "Let's change the world by doing this kind of research" by the Council for Science, Technology and Innovation, Cabinet Office, "The Key to Toxicity of Particles to Humans is Charging! Unprecedented Particle Charging Research" was introduced!
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INFORMATION
2020/11/19
【Laboratory Introduction】
We have opened YouTube Channel to introduce our research for the third-year students of the Department of Applied Chemistry and for those who are interested in our laboratory activities! We have also uploaded an 8-minute video of Okuda explaining our Lab! -
PUBLICATION
2020/11/13
Publication #76 has been accepted. The superiority of the method developed by our laboratory over conventional methods has been demonstrated in the "Toxicity Assessment of Particulate Matter".
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MEDIA
2020/10/15
【Asahi Shimbun】
Dr. Ishigaki of the University of Electro-Communications and Okuda's work on Ventilation was covered in this article.
"Measuring CO2 Concentration and Visualizing 'Theree Cs'" -
MEDIA
2020/10/15
【PR Magazine "Juku" 2020Autmun】Special Feature: "Toward the Realization of a Sustainable Society -Thinking about the SDGs-" ～The Mission of Environmental Chemistry in Japan~
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INFORMATION
2020/9/21
【New Project】
Super Practical Human and Environmental Research enforcing Application and Social Implementation
New project that integrates social implementation-oriented themes such as masks, filters, droplet measurement, and ventilation measurement has been launched at the Shin-Kawasaki Frontier Research and Education Collaborative Square at the Shin-Kawasaki K2 Town Campus. -
AWARD
2020/9/17
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MEDIA
2020/9/10
【Social Implementation of Joint Research Results】
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The results of joint research between Okuda and TANAC Co., Ltd. on the performance evaluation of products that improve the fit of masks to the face were published in newspaper articles [1] [2] [3] [4] -
MEDIA
2020/8/8
【TBS】Hodo-Tokusyu
"What about droplets from playing? A close look at the orchestra verification" In the special feature, Okuda explained the results of droplet measurements from wind instruments and singers. -
INFORMATION
2020/6/25
In the "Roadmap and guidelines for for the resumption of concerts by the Tokyo Metropolitan Symphony Orchestra", the report on the results of droplet measurements for resumption of concerts was posted.
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MEDIA
2020/6/24
【Sankei Shimbun】 Verification of droplets by orchestra.Tokyo Symphony Orchestra seeks balance between music and safety.
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INFORMATION
2020/6/15
Okuda and some other members of our laboratory, in cooperation with the Tokyo Metropolitan Symphony Orchestra and many other people, conducted droplet measurements in preparation for the resumption of orchestra performances under the influence of COVID-19.
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MEDIA
2020/6/6
【NHK】ＥＴＶspecial "The Days of the Missing Mask: How to protect the medical field."
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MEDIA
2020/4/21
【WSJ】Wall Street Journal "Japan’s Abe Taken to Task Over Itsy-Bitsy Masks"
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INFORMATION
2020/4/1
Tomoaki Okuda was appointed as a professor.
2019
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PUBLICATION
2019/12/11
Publication #72 has been accepted. Saito & Okuda et al., Chemical speciation of chromium in atmospheric particulate matter collected with cyclone by XAFS method, J. Jpn. Soc. Atmos. Environ. (in Japanese with English abstract)
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AWARD
2019/9/19
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MEDIA
2019/6/13
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PUBLICATION
2019/6/4
Publication #71 has been accepted.
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MEDIA
2019/5/18
[NHK]NHKNews20:45～21:00
「地下鉄構内のＰＭ2.5 閉鎖空間で高濃度「実態調査を」」 -
INFORMATION
2019/5/15
AS&T Top 10 Most Downloaded Article!
Yonemichi et al. from a collaborative research between Fukagata lab. and us has been selected as "Top 10 Most Downloaded AS&T Articles Published February - April 2019" by AAAR (American Association for Aerosol Research)!! -
PRESSRELEASE
2019/4/16
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INFORMATION
2019/3/27
KEIO RESEARCH HIGHLIGHTS
Air pollution and environmental monitoring -
PUBLICATION
2019/2/18
Publication #70 has been accepted.
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PUBLICATION
2019/2/12
Publication #69 has been accepted.
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PUBLICATION
2019/1/22
Publication #68 has been accepted.
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MEDIA
2019/1/16
[読売新聞]
「ぜんそく原因「ＰＭ２・５」地下鉄は地上の５倍」 -
PRESSRELEASE
2019/1/11
2018
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PUBLICATION
2018/12/22
Publication #67 has been accepted.
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PUBLICATION
2018/12/18
Publication #66 has been accepted.
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MEDIA
2018/12/8
[日経新聞]
地下鉄のホーム PM2.5濃度高く 最大で地上の5倍 閉鎖空間影響？ -
MEDIA
2018/10/29
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MEDIA
2018/10/26
[NHK web特集]
「地下鉄で高濃度のＰＭ２.５ なぜ？」 -
PUBLICATION
2018/10/26
Publication #64 has been published.
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MEDIA
2018/10/18
NHK『News シブ5時』キニナル！コーナー「PM2.5が地下鉄構内に？」
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MEDIA
2018/10/18
TV朝日『グッド！モーニング』「PM2.5屋内基準ナシ 地下鉄ホームは5倍」
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MEDIA
2018/10/14
[NHKNews]
「おはよう日本」[HomeNews]「地下鉄ホームのPM2.5濃度 最大で地上の約５倍に」 -
PUBLICATION
2018/7/24
Publication #63 has been accepted.
Grant Information (JSPS) has been updated. -
PRESSRELEASE
2018/7/24
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MEDIA
2018/7/19
[日経新聞]
地下鉄ホーム 空気検査 慶大、横浜で 粉じん除去目指す -
PRESSRELEASE
2018/7/9
2017
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PUBLICATION
2017/12/19
Publication #62 has been accepted.
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PUBLICATION
2017/10/26
Publication #61 has been accepted.
Research introduction video (JKA) has been uploaded. -
PUBLICATION
2017/6/24
Publication #59 has been accepted.
English version of the research introduction video has been uploaded.
Grant Information (JSPS) has been updated. -
PUBLICATION
2017/3/31
Publication #58 has been accepted.
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PUBLICATION
2017/3/2
Publication #57 has been accepted.
2016
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PUBLICATION
2016/11/10
Publication #56 has been accepted.
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INFORMATION
2016/9/23
Research Topics Page has been updated. Please visit and Learn More.
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AWARD
2016/9/2
Awards #9 and #10 have been updated.
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INFORMATION
2016/6/2
Grant Information (Ministry of the Environment) has been updated.
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INFORMATION
2016/6/1
Grant Information (JST) has been updated.
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PUBLICATION
2016/5/29
Publication #55 has been accepted.
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AWARD
2016/5/26
Award #8 has been updated.
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INFORMATION
2016/4/13
Research introduction video has been uploaded, and Award #7 has been updated.
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PUBLICATION
2016/2/17
Publication #54 has been accepted.
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INFORMATION
2016/2/12
Introduction and interview have been uploaded.
2015
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PUBLICATION
2015/12/26
Publication #53 has been accepted.
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PUBLICATION
2015/9/14
Publication #52 has been accepted.
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PUBLICATION
2015/8/8
Publication #51 has been accepted.
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AWARD
2015/6/27
Award #6 has been updated.
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AWARD
2015/6/26
Award #5 has been updated.
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PUBLICATION
2015/6/19
Publication #50 has been accepted.
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PUBLICATION
2015/4/30
Publication #49 has been accepted.
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PUBLICATION
2015/3/18
Publication #48 has been accepted.
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PUBLICATION
2015/1/27
Publication #47 has been accepted.
2014
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AWARD
2014/9/18
Award #4 has been updated.
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AWARD
2014/8/7
Award #3 has been updated.
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PUBLICATION
2014/7/11
Publication #46 has been accepted.
