報文
カラムリーチング試験において農薬が浸透水中へ溶出した場合の浸透距離の換算方法の検討
2010 年 35 巻 1 号 p. 43-51
詳細
2010 年 35 巻 1 号 p. 43-51
The OECD test guideline 312 recommends to measure a leaching distance of a test substance in the column leaching experiment and to calculate the relative mobility factor (RMF) using a reference substance, in order to evaluate its potential for movement into groundwater. While the leaching distance is generally calculated based on the distribution of test substance in the segments in a soil column, the leaching distance cannot be measured when the substance is eluted in leachate. In this study, a method to estimate the leaching distance of the compounds that flow out of the soil column under the guideline-recommended conditions was proposed, in which the elution volume was converted into the distance, by assuming that a fraction of leachate water with a weight of the water content in the 5 cm soil layer in the column corresponds to the soil segment of the same length.
