实验建立了红外分光光度法测定西甲硅油中聚二甲基硅氧烷的含量.测定条件为波数1261 cm-1,溴化钾吸收池厚度0.5 mm.在该条件下聚二甲基硅氧烷的线性范围为3.01 ~ 45.21 mg·mL-1,平均加样回收率103.1%,相对偏差1.76%.该方法简便准确,灵敏度高,适合西甲硅油中聚二甲基硅氧烷的含量测定.
An infrared spectrophotometry (IR) method for determination of polydimethylsiloxane (PDMS) in simethicone was developed.The absorbance wavelength is 1261 cm-1 and the absorption cell thickness is 0.5 mm.In this spectrum condition,the linear range of PDMS was 3.01-45.21 mg· mL-1,and the average recovery rate was 103.1%,and RSD was 1.76%.The method was simple,accurate,sensitive,specific,and is suitable for PDMS detecting in Simethicone.