High performance liquid chromatography (HPLC) and electron ionizing mass spectrometry ( EI-MS) were used to analyze the oily contaminant in continuous tinplating electrolyte.

• 高速镀锡电解槽液表面常会出现"油污"现象,严重影响了镀锡件的产品质量,增加了原料消耗和镀液排放量。