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采用改进的激光解吸/傅里叶变换质谱(LD/FTMS)实验程序和自行设计的实验参数,在测定一系列聚乙二醇、聚丙二醇标准品的基础上
Based on the improved laser desorption / Fourier transform mass spectrometry (LD / FTMS) experimental program and self-designed experimental parameters, a series of polyethylene glycol and polypropylene glycol standards were determined