中国胶粘剂

采用气相色谱法,使用FID检测器,根据丙烯腈标准品的出峰时间进行定性。同时,利用庚烷作为内标物进行定量检测。通过测定和计算得出检出限为10 mg/kg,精密度重现性为13%,再现性为17%;通过12个样品检测的数据和加标回收,加标回收率都≥85%。研究结果表明:本检验方法适用于水性胶粘剂中丙烯腈含量的检测,准确性、有效性和可行性都符合要求。

Using gas chromatography and FID detector,the chemical composition was determined according to the peak time of acrylonitrile standard. At the same time,heptane was used as internal standard substance for quantitative detection. By measurement and calculation,the detection limit was 10 mg/kg,the precision reproducibility was 13%,the reproducibility was 17%. By means of the detection data and standard addition recovery of 12 samples,the recovery rate was more than 85%. The research results showed that the detection method was suitable for the determination of acrylonitrile content in water-based adhesive,and the accuracy,effectiveness and feasibility met the requirements.