2011 Fiscal Year Final Research Report
Development of O_2 and CO_2 measurement system for science education
| Project/Area Number |
21500850
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Science education
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| Research Institution | Tokyo National College of Technology |
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Principal Investigator |
TAKAHASHI Mitsuo 東京工業高等専門学校, 物質工学科, 教授 (40197182)
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| Co-Investigator(Kenkyū-buntansha) |
YUGA Masamitsu 東京工業高等専門学校, 電子工学科, 教授 (40123997)
TSUTSUI Kentarou 東京工業高等専門学校, 機械工学科, 准教授 (60249761)
TSUTSUMI Hiroki 東京工業高等専門学校, 機械工学科, 講師 (30300544)
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| Co-Investigator(Renkei-kenkyūsha) |
KAWASHIMA Noimichi 桐蔭横浜大学, 医用工学科, 教授 (90112888)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 自然科学教育 / 水学 / 理科 / 物理・化学・生物・地学 / 情報 |
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| Research Abstract |
In this study, we developed an easy-to-operate O_2 and CO_2 measurement system for science education. We used an easily-prepared hand-made diaphragm galvanic cell-type sensor as the O_2 sensor. This O_2 sensor can measure not only the oxygen concentration in air, but also in a solution, making it suitable as an educational tool. We used a solid electrolyte-type sensor module as the CO_2 sensor.
This system makes automatic and simultaneous measurements of O_2 and CO_2 concentration possible using the combination of the O_2 and CO_2 sensors. We also developed measurement software using commercially available spreadsheet software by connecting the sensor with a PC using a USB connection. The most important advantage is to be able to visualize the changes in the concentration of invisible and odorless gases such as O_2 and CO_2 as a function of time.
We measured the author's expired air using the O_2 and CO_2 measurement system, measuring both shallow and deep expirations. First, shallowly i
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nhaled air is exhaled into an expiration bag. Then, air is deeply inhaled and held for 30 seconds before being exhaled into the bag. We sampled the air every 5 seconds and measured the O_2 and CO_2 concentration of each sample for 90 seconds.
In respect to the results, the O_2 concentration in shallow expiration was decreased from 20.8% to 18.6%. On the other hand, the CO_2 concentration was 17, 8ppm, which was an increase the atmospheric CO_2 concentration. The O_2 concentration in deep expiration was observed to decrease by about 4.1% from 20.9% to 16.8%. On the other hand, the CO_2 concentration was 2, 4ppm.
In conclusion, anyone can easily measure changes in the O_2 and CO_2 concentration as a function of time in shallow and deep expiration using an expiration bag and the sensor system. We can also carry out experiments easily and obtain highly accurate data. This sensor system can be expected to promote the basic concept of"Life"as an educational tool for the study of natural science. Less
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Research Products
(15 results)
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[Presentation] 理科教育のための空気電池を利用した酸素センサキットの開発-(1)-ロウソクの消炎反応の実験-2011
Author(s)
高橋三男,雑賀章浩,園部幸枝,佐藤道幸,飯田寛志,大平和之,石黒光弘,近藤浩文,後藤顕一,林誠一,山本勝博,堀哲夫,寺谷敞介,松原静郎
Organizer
日本理科教育学会関東支部大会研究発表要旨集
Place of Presentation
横浜国立大学
Year and Date
20110000
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[Presentation] 理科教育のための身の回りの電池を利用した酸素センサキットの開発2011
Author(s)
高橋三男,雑賀章浩,園部幸枝,佐藤道幸,飯田寛志,大平和之,石黒光弘,近藤浩文,後藤顕一,林誠一,山本勝博,堀哲夫,寺谷敞介,松原静郎
Organizer
日本理科教育学会北海道支部大会論文集
Place of Presentation
北海道大学
Year and Date
20110000
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