聚对苯二甲酸乙二酯树脂及其成型品中残留对苯二甲酸和乙二醇的测定 气相色谱-质谱法聚对苯二甲酸乙二酯树脂及其成型品中残留对苯二甲酸和乙二醇的测定 气相色谱-质谱法Determination of terephthalic acid and ethylene glycol in polyethylene terephthalate ester(PET) and polyethylene terephthalate products-Gas chromatography-mass spectrometry(GC-MS)method
Analysis of surface active agents (raw materials). Ethylene oxide adducts-Method for determination of polyethylene glycols and non-ionic active matter contents
表面活性剂(原材料)分析 环氧乙烷加合物