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气相色谱–质谱法测定皮革和纺织品中甲基苯酚残留量

Determination of the Residual Amounts of Methyphenols in Leather and Textiles by Gas Chromatography-mass Spectrometry

  • 摘要: 文章建立了利用气相色谱–质谱联用法对皮革和纺织品中5种甲基苯酚残留量进行测定的分析方法。试样经甲醇超声萃取、静置过滤后使用毛细管色谱柱分离、选择离子监测模式下进行定性定量分析。试验结果表明,在0.05~10.0 mg/kg质量浓度范围内线性关系良好,相关系数均大于0.9997,定量限为0.1 mg/kg。目标化合物在三个添加水平下的平均回收率为90.01%~106.18%(n=8),相对标准偏差为2.09%~5.17%,精密度良好,检测结果准确可靠,能够满足进出口检测需要,可有效保护人体健康和环境安全。

     

    Abstract: A gas chromatography-mass spectrometry (GC-MS) method was established for the determination of the residual amounts of five methylphenols in leather and textiles. The samples were ultrasonically extracted with methanol, and after standing and filtration, the extract liquors were separated by a capillary chromatographic column and qualitatively and quantitatively analyzed in selected ion monitoring mode. The experimental results indicate that a good linear relationship exists within the mass concentration range of 0.05–10.0 mg/kg, with correlation coefficients all exceeding 0.9997, and the limit of quantification was 0.1 mg/kg. The average recovery rates of the target compounds at three addition levels were 90.01%–106.18% (n=8) and the relative standard deviations were 2.09%–5.17%, indicating good precision. The test results were accurate and reliable, which could meet the needs of import and export testing and effectively protect human health and environmental safety.

     

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