The electron capture detector(ECD) and the external standard method were used.

及电子捕获检测器（ECD），外标法计算含量。

The extract was cleaned up by liquid to liquid separation and column chromatography, then the sample was determined by gas chromatography with Electron Capture Detector (ECD).

提取液经液—液分配和柱层析净化，然后用气相色谱仪，电子捕获检测器测定。