目的 探索木包装中五氯苯酚防腐剂的提取和检测技术。方法 采用超声震荡提取， 以甲醇为提取溶剂， 选择三溴苯酚为内标， 无水乙酸酐为乙酰化试剂， 用气相色谱法（电子捕获检测器）进行定量测定。结果 该方法在1～20.0 μg/L的范围内线性关系良好， 相关系数为0.9982， 平均回收率为82.7%~96.5%， 相对标准偏差<5.32%， 检出限为0.01 mg/kg。用该方法对50件木包装样品进行验证，PCP的检出率为22%。结论 该方法操作简单， 灵敏度较高， 适用于木包装中对五氯苯酚防腐剂的分析检测。

This paper explored the extraction and determination methods of pentachlorophenol (PCP) in wood package. Pentachlorophenol in wood package was extracted by ultrasonic extraction with methanol using tribromophenol as internal standard, acetylated by acetic anhydride, and finally detected by gas chromatography with electron capture detector. This method showed good linear relationship in 1~20.0 μ g/L, the correlation coefficient was 0.9982. The average recovery ranged from 83.2% to 106.3%, the relative standard deviation was blow 5.32%， the detection of limit of this method was 0.01 mg/kg. Totally 50 wood package samples were detected using this method, and 22% of samples were positive for PCP. The developed analytical method was rapid and accurate, and suitable for the determination of pentachlorophenol in wood package.