本文件规定了通过基质辅助激光解吸/电离飞行时间质谱（MALDI-TOF-MS）测定聚合物（见参考文献[1]）的平均分子质量和分子质量分布的一般方法。 根据使用合成聚合物和/或生物聚合物标准构建的校准曲线计算平均分子质量和分子质量分布。因此，该方法被归类为相对方法。 该方法不适用于聚烯烃或具有多分散性的聚合物>；1,2.

This document specifies a general method for determining the average molecular mass and molecular mass distribution of polymers (see Reference [1]) from 2 000 g？mol？1 to 20 000 g？mol？1 by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS). The average molecular masses and molecular mass distributions are calculated from a calibration curve constructed using synthetic-polymer and/or biopolymer standards. This method is therefore classified as a relative method. The method is not applicable to polyolefins or to polymers with a polydispersity >1,2.