The carboxylic content in oxycellulose was analyzed quantitatively by FTIR using KSCN as internal standard.Calibration curve with good linear relationship was obtained.

要以KSCN作为标，用傅里叶变换红外光谱法(FTIR)对氧化纤维素中的羧基含量作了定量分析，得出了线性系较好的标准曲线。