电化学修饰固相微萃取涂层用于气相色谱-质谱法测定纺织品中的芳香胺

Electrochemically Modified SPME Coating for Determination of Aromatic Amines in Textiles by GC-MS

通过电化学沉积法在钢丝（SS）表面制成对氨基苯磺酸-聚苯胺（ABSA-PANI）涂层。扫描电镜分析表明,当对氨基苯磺酸（ABSA）作为掺杂物质存在时,PANI涂层结构变均匀、比表面积增大。与气相色谱-质谱法联用,以12种芳香胺为目标化合物,考察该萃取头（ABSA-PANI/SS）顶空固相微萃取的性能,并对萃取时间、萃取温度和溶液酸度等影响萃取效率的因素进行了优化。在优化条件下,12种芳香胺的质量分数在一定范围内与峰面积呈线性关系,测定下限（10S/N）在0.003 7～0.093 3mg·kg^（-1）之间。采用该方法测定纺织品中芳香胺的含量,结果与标准方法的结果相吻合。

A novel p-sulfanilic acid-polyaniline（ABSA-PANI）film coated on steel wire（SS）was prepared by electrochemical deposition.The scanning electron microscopy images showed that the porous polyaniline（PANI）coating,doped by ABSA,displayed homogeneous structure and larger surface area than pure PANI coating.Extraction properties of the ABSA-PANT/SS fiber to aromatic amines were examined using headspace solid-phase microextraction coupled with GC-MS.The key parameters influencing extraction efficiency were optimized,including extraction temperature,extraction time and solution acidity.Under the optimized condition,a linear relationship was found between the peak areas and the mass fraction of the 12 aromatic amines in definite ranges,with the lower limit of determination（10S/N）in the range of 0.003 7-0.093 3mg·kg^（-1）.The method was used to determine aromatic amines in textile samples,giving results in consistent with those obtained by the standard method.