高含水率土壤样品与无水硫酸钠混合均匀后，以二氯甲烷-正己烷（2+1）混合液为提取剂进行索氏提取，提取液经氢氧化钠溶液净化，再经酸化后由二氯甲烷-乙酸乙酯（4+1）混合液提取，最后进行浓缩，采用气相色谱法测定浓缩液中21种酚类化合物的含量。用HP-5色谱柱（30 m×0.25 mm，0.25 μm）分离，氢火焰离子化检测器检测。21种酚类化合物的质量浓度均在1.0~100.0 mg·L^-1内与其对应的峰面积呈线性关系，检出限为0.01~0.07 mg·kg^-1。以空白样品为基体进行加标回收试验，所得回收率为71.4%~95.1%，测定值的相对标准偏差（n=6）为1.0%~11%。

After mixing with anhydrous sodium sulfate evenly, the sample of high moisture-content soil was extracted (Soxhlet) with the mixture of dichlormethane and hexane (2+1) as extractant. The extract was purified by sodium hydroxide solution. After acidification, the above solution was extracted with the mixture of dichlormethane and ethyl acetate (4+1), and finally concentrated. GC was applied to the determination of 21 phenolic compounds in the concentrated liquid. The analytes were separated on HP-5 chromatographic column (30 m×0.25 mm, 0.25 μm) and detected by FID. Linear relationships between values of peak area and mass concentration of the 21 phenolic compounds were kept in the same range of 1.0-100.0 mg·L^-1, with detection limits in the range of 0.01-0.07 mg·kg^-1. On the base of blank sample, test for recovery was made by standard addition method; values of recovery found were in the range of 71.4%-95.1%, with RSDs (n=6) of determined values in the range of 1.0%-11%.