@article{oai:ir.kagoshima-u.ac.jp:00012675,
 author = {竹下, 寿雄 and TAKESHITA, Toshio and 宮内, 徳之 and MIYAUCHI, Noriyuki},
 journal = {鹿児島大学工学部研究報告, The research reports of the Faculty of Engineering, Kagoshima University},
 month = {Sep},
 note = {An accelerated test using filter paper for the determination of the yellowing of drying oils is described. The method is as follows: 50mg of sample are placed drop by drop in the center of a 40x40mm square of Toyo No. 3 filter paper, then the unit is placed in a
desiccator filled nitrogen for about 1 hr. for the purpose of diffusing the sample over the surface of the paper. The filter paper film is then placed in a desiccater containing NaCl saturated aq. solution. The desiccator is put in an forced draft oven keeped at 50°C or 75°C, and the amount of yellowing is determined by the difference in the absorbance measurements at 440mμ and 720mμ, using a clean white filter paper as reference standard, which is measured once a day for 5 days (75°C) or 10 days (50°C) in a Hitachi Model EPU-2 spectrophotometer, equipped with a reflectance accesory. Results of the tests on a number of common drying oils showed good agreement with the obserbed yellowing.},
 pages = {109--111},
 title = {乾性油の促進黄変試験},
 volume = {5},
 year = {1965}
}