- 著者
-
村田 勝夫
- 出版者
- 鳴門教育大学
- 雑誌
- 鳴門教育大学研究紀要 (ISSN:18807194)
- 巻号頁・発行日
- vol.22, pp.297-302, 2007
Aging of three academic journals of Pharmacy Journal, Chemistry Today, and Science Education was investigated by measurement of pH on the surface of paper. Pharmacy Journal revealed pH4 to pH5 on the surface of paper until 1979, but after that the pH went up pH7 to pH8. Chemistry Today showed the pH jump in 1987, while Science Education exhibited no clear pH jump on the surface of paper until 1996. Neutralization of journals was supported by the application of X-ray fluorometric spectroscopy and infra red spectroscopy to the analysis of additives on the paper. The age of the pH jump and the increasing content of additives on the journals coincided in the publishing times of the journal.