依相對容量法迅速定量香茅醛

Determination of Citronellal Content by Relative Volume Method

黃維賢(Wei-Hsiang Huang)

《化學》 56年1期 (1967/03) Pp. 1-8

https://doi.org/10.6623/chem.1967001

摘要

香茅油203件，以統計數學法算出比重平均值為0.8898，香茅醛含量平均值為39.88%。該批香茅油中No. 163之比重及醛含量各為d_(15)^(15)0.8898與39.85%，可用為相對容量計算之依據。本相對容量法應用於30件香茅油，其結果與Stillmann法比較，誤差在1%以內。

並列摘要

Two hundred and three samples of citronella oil were collected from various districts of Taiwan and their average density and citronellal content were calculated to be 0.8898 and 39.88%, respectively; by statistic method. The properties of No. 163 sample, d_(15)^(15) 0.8898 and citronellal 39.85%, were entirely in agreement with the average values and could be used as the basis of determination. The citronellaI content of unknown oil was calculated by the relation: citronellal % = 39.85x/y, where x and yare the volume of hydroxylamine solution consumed by the unknown and the No. 163, respectively. The-method was tested with 30 samples and the results showed the maximum error of 1% in comparison with the Stillmann method.