大気中の花紛数の統計的研究 : ワイブル確率紙による解析

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概要

• 論文の詳細を見る

• By using the Cascade Impactor the authors collected 600l of air sample per day, at the roof of the School of Pharmaceutical Science, Toho University, Funabashi, Chiba Prefecture. Each air sampling, which had been taken for about two hrs, is repeated three times per week for two years, beginning January 1969.The atmospheric pollens were recovered from the Cascade Impactor, and the number of pollens per each samples were counted under the microscope, identifying the species of pollens.Six types of species were classified according to the classification of pollens in Japan reported by Dr. M. Ikuse. The accumulated number of pollens per each species per day i.e., per air samples, were plotted on the ordinate of Weibull Probability Paper, on the abscissa of which the day of measurement was shown, as an elapse of days from the first day of appearence of the pollens concerned.The following results were obtained:1) The author has already reported in the previous paper that the number of pollen per unit volume of air do not follow the Normal Curve. The Weibull Paper without assuming the Normal Curve, revealed to be suitable to show the seasonal variation of the number of pollens in air.2) The Weibull Paper, on the logarithmic scale, is suited to show the details of the begining of emission of pollens.3) By using the Weibull Paper, it is possible, to separate the compound distribution composed of more than two species of pollens into the original distributions.

• 日本衛生学会の論文

著者

• 佐渡 昌子

  東邦大学薬学部

• 佐渡 昌子

  東邦大学薬学部公衆衛生学教室

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