北京彤程创展科技有限公司开发出一种橡胶及橡胶助剂中苯酚-甲醛树脂的鉴定方法。将橡胶或橡胶助剂样品制成小于2 mm~3的颗粒,用有机溶剂对样品进行溶解或提取;使用气相色谱-质谱联用仪,检测所述溶液的质谱;在样品总离子流图中提取质荷比m/z=105~109、198~202的碎片离子,将其质谱图与三种亚甲基双苯酚的质谱图 Beijing Tong Cheng Chong Exhibition Technology Co., Ltd. developed a rubber and rubber additives phenol - formaldehyde resin identification methods. The rubber or rubber additive samples are made into particles smaller than 2 mm ~ 3, the sample is dissolved or extracted with organic solvent; the mass spectrum of the solution is detected by gas chromatography-mass spectrometry; The fragment ions with m / z = 105-109 and 198-202 were extracted and their mass spectra were compared with those of three methylene bisphenols