气相色谱-质谱法测定皮革中对苯二胺含量

摘要

采用气相色谱一质谱法测定皮革中的对苯二胺含量.通过对色谱参数、提取方式、提取温度、提取时间、提取次数等条件的优化, 建立了皮革中对苯二胺含量的检测方法.对苯二胺标准曲线线性范围为0.1～5.0 mg/L, 相关系数为0.9996, 检出限为1.22 mg/kg, 平均回收率为86.4％～108.2％, 相对标准偏差 (RSDs, n=6) 为3.52％～7.48％.%P-phenylenediamine in leather was analyzed by gas chromatography-mass spectrometry (GC-MS). The experi-mental conditions were optimized including chromatography parameter, extraction method, extraction temperature, extrac-tion time and extraction times. The results demonstrated that the standard curve linear range of p-phenylenediamine was 0.1～5.0 mg/L, the correlation coeficient was 0.9996 and the detection limit was 1.22 mg/kg. The average recoveries of pphenylenediamine were in the range of 86.4％ ～108.2％, and the relative standard deviations (RSDs, n=6) were 3.52％～7.48％.