The primary impurities in butachlor technical were quantified by gas chromatography-mass spectrometry (GC-MS).
利用气相色谱-质谱联用（GC-MS）技术对丁草胺原药中的主要杂质进行定性分析。
The primary impurities in butachlor technical were quantified by gas chromatography-mass spectrometry (GC-MS).
利用气相色谱-质谱联用（GC-MS）技术对丁草胺原药中的主要杂质进行定性分析。
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