气相色谱-质谱法测定纺织品及皮革中9种有机溶剂的残留

Determination of 9 Organic Solvent Residues in Textile and Leather by GC/MS

  • 摘要: 建立了气相色谱-质谱(GC/MS)联用法同时检测纺织品及皮革中乙二醇二乙醚(CET)、乙二醇单甲醚(2-ME)、乙二醇单乙醚(2-EE)、乙二醇乙醚醋酸酯(CAC)、N,N-二甲基甲酰胺(DMF)、N,N-二甲基乙酰胺(DMAc)、1,2,3-三氯丙烷(TCP)、N-甲基吡咯烷酮(NMP)和三甘醇二甲醚(TCE)9种有机溶剂的残留量。样品经10 mL甲醇超声提取后,直接由优化好的GC/MS进行定性和定量分析。结果表明,9种有机溶剂校正曲线的线性关系良好(r≥0.999 5),方法检出限为0.12~0.23 mg/kg。以阴性的棉涤、麻、丝和皮革作为样品基质,分别做3次水平加标回收实验,回收率为81.5%~97.1%,相对标准偏差(RSD)均不大于5.1%。该方法操作简单、分析时间短、灵敏度高、稳定性好,具有实际应用价值。

     

    Abstract: A method of gas chromatography-mass spectrometry (GC/MS) was developed for the simultaneous determination of 9 organic solvent residues in textile and leather, induding ethylene glycol diethyl ether(CET), 2-methoxyethanol (2-ME), 2-ethoxyethanol (2-EE), ethylene glycol monoethyl ether acetate (CAC), N,N-dimethylformamide (DMF), N,N-dimethylacetamide (DMAc), 1,2,3-trichloropropane (TCP), N-methylpyrrolidone (NMP) and triethylene glycol dimethyl ether (TCE). Samples were extracted by methanol, and directly qualitative and quantitative analysis by optimized GC/MS. The results show that calibration curves of 9 organic residues have good linearity with the correlation coefficients not less than 0.9995, and the method detection limits range from 0.12 to 0.23 mg/kg. Using negative cotton, linen, silk and leather as the sample matrix, the recoveries of 9 organic solvents spiked at three levels range from 81.5% to 97.1%, and the relative standard deviations are less than 5.1%. This method is simple and time-saving with high sensitivity and reproducibility, as well as having practical application value.

     

/

返回文章
返回