摘要：Separation and identification of chlorinated phenoxy herbicides were examined by thin-layer chromatography using polyamide. The herbicides were developed with 14 kinds of solvent systems and visualized by spraying with silver nitrate, o-tolidine or o-dianisidine solution and irradiating ultraviolet ray. All the herbicides tested were distinctly separated by the solvent system composed of non polar solvent and acetic acid, e.g., benzene-acetic acid (9 : 1) or dichloromethane-acetic acid (19.5 : 0.5), and detected at the levels of 1-4 μg.
