水中微量芳香胺的气相色谱分析方法

    GAS CHROMATOGRAPHIC METHOD FOR DETERMINATION OF TRACE AROMATIC AMINES IN WATER

    • 摘要: 本报告介绍了气相色谱法测定水中微量芳香胺的一般过程,着重阐述了提取和预分离芳香胺过程中的特殊手段。用阳离子交换树脂可以提取并同时分离水中芳香胺,回收率可达85%左右;用含氟衍生剂衍生芳香胺,回收率为83.9%—94.1%,结合毛细管柱的高分辨率和ECD检测器对含氟衍生物的高灵敏度,芳香胺的最低检出限为20—50ppt。

       

      Abstract: Gas chromatographic methods for determination of trace aromatic amines in water was reported in this paper. Special methods for extraction and separation of aromatic amines form water samples were described. Cation exchange resin can be used to extract and separate aromatic amines from water with recovery rate of about 85%. In the experiment, aromatic amines were dervvatized with fluorine containing compound, and determined by GC with recovery rates in the range of 83.9 to 94.1%. Becarse of higher resolution of capillery column and high sensitivity of electron capture detector to fluorine containing compound, the detection limits of the method were 20-50 ppt depending upon individual aromatic amine.

       

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