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Shake Flask법을 이용한 1-Octanol/Water 분배계수 측정
Determination of 1-Octanol/Water Partition Coefficients by Using Shake Flask Method
HWAHAK KONGHAK, February 1997, 35(1), 96-101(6), NONE
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Abstract
화학무릴의 운명과 생체에 대한 평가에 유용하게 이용되는 1-octanol/water 분배계수(Kow)를 shake flask(SF)법으로 측정하기 위하여, 먼저 tert-butanol을 모델로 포화용액제조와 분배평형에 필요한 교반시간을 정립하고, n-alcohol(C1-C7)에 대해 Kow를 측정하여 문헌치와 비교하였다. 비교편차가 평균 5% 미만으로 본 실험방법의 정확성과 재현성을 확인할 수 있었으므로, 이 방법으로 염소화합물과 방향족화합물의 Kow를 측정하였다. 이들의 Kow는 모든 화합물에서 몰부피에 따라 선형적으로 증가하는 경향을 보였으며, Kow와 water에 대한 포화용해도사이의 관계를 1차 선형식으로 표현할 수 있었다.
The 1-octanol/water partition coefficient(Kow) is used to estimate the chemical’s fate and the behavior of chemicals against the organization. We want to determine the Kow by using shake flask(SF) method. Firstly we established the requiring time for preparing of saturated solution and for partitioning equilibrium in the SF method with tert-butanol. The accuracy and reproducibility of this SF method was reliable since the average deviation was less than 5% between measured Kow values of alcohols(C1-C7) and the reported values. The Kow for some chlorinated and aromatic compounds were measured. The Kow of these organic chemicals were linearly proportional to their molar volumes and the relationship of Kow and water solubilities can be expressed by a first order linear equation.
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