Katsuko Saruhashi Chemist

Katsuko Saruhashi (猿橋 勝子, Saruhashi Katsuko, March 22, 1920 – September 29, 2007) was a geochemist who made some of the first measurements of carbon dioxide (CO2) levels in seawater and subsequently showed the evidence in seawater and the atmosphere of the dangers of radioactive fallout. Saruhashi was born in Tokyo and graduated from the University of Tokyo in 1943. In 1950, she started studying CO2 levels in seawater and earned her doctorate in chemistry in 1957 from the University of Tokyo, becoming the first woman to do so. Instead of teaching school, as was expected at the time, Saruhashi wanted to do research. She then joined the Geochemical Laboratory established by Yasuo Miyake, a government meteorologist and her mentor. At that time, CO2 levels were not recognized as important; Saruhashi was not only the first person to study these levels worldwide, she also had to invent the methods for doing so. She died September 29, 2007 of pneumonia at her home in Tokyo. She was 87. After the Bikini Atoll nuclear tests in 1954, the Japanese government asked the Geochemical Laboratory to analyze and monitor radioactivity in the seawater and in rainfall.

Personal details

Date of birth
March 22nd, 1920
Date of death
2007 at age of 86
Place of death
Tokyo, Japan
Places lived
pop. 13,352,239 (2014)


1. University of Tokyo Colleges/University

The University of Tokyo (informally Tokyo University) (東京大学, Tōkyō daigaku), abbreviated as Todai (東大, Tōdai), is a research university located in Tokyo, Japan. The University has 10 faculties with a total of around 30,000 students, 2,100 of whom are foreign. Its five campuses are in Hongō, Komaba, Kashiwa, Shirokane and Nakano. It is considered to be the most prestigious university in Japan. It ranks as the highest in Asia and 21st in the world in 2011 according to Academic Ranking of World Universities.

Type National university
Institution colors
7-3-1 Hongo, 113-8654 - Bunkyō, Tokyo
2013. 14,120
2011. 14,123
2013. 13,878
2011. 14,386
Acceptance rate
2011. 24.8 %
2005. 23.19 %
Official web page www.u-tokyo.ac.jp
Wikipedia article

Institution social analysis

Notable alumni by career
Notable alumni by gender

People attended University of Tokyo connected by profession and/or age

b. 1935., Chemist
b. 1854., Chemist
b. 1947., Chemist
b. 1864., Chemist
b. 1865., Chemist
b. 1942., Chemist
b. 1936., Chemist
b. 1931., Chemist


Check Katsuko Saruhashi on wikipedia.

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