Desktop scanning electron microscope(SEM)was employed to determine special fibers in cigarette paper, and key parameters were researched. The results indicated that: 1)Magnification of 400 to 500 was appropriate for full view analysis of samples, that for micro-morphology analysis and fiber type identification was 1 000 to 2 000. Both backscattered electron detector and secondary electron detector were suitable for the determination of special fibers in cigarette paper; the appropriate accelerating voltage ranged from 5 to 15 kV;and it was not necessary to set the imaging parameters, test area and size specifically. 2)The collaborative validation of the method was conducted with 10 samples in 10 laboratories, and the results of desktop SEM method well agreed with those of current standard method. 3)Comparing with current standard methods, the desktop SEM method shortened the determination time by more than 75 minutes, and the test magnification and efficiency promoted remarkably.%为了准确快捷地鉴别卷烟纸中特殊纤维,提出了基于台式扫描电子显微镜的卷烟纸中特殊纤维测定方法,研究了方法的关键参数.结果表明:①样品整体分析的合适放大倍率为400~500倍,纤维微观形貌分析和类型确认的合适放大倍率为1000~2000倍;背散射电子探测器和二次电子探测器均适合于卷烟纸中特殊纤维的测定;测定的合适加速电压为5~15 kV;无需特别规定测试时的成像参数、样品测试区域和尺寸.②在10个实验室间使用10个样品开展了方法一致性验证实验,结果表明台式扫描电子显微镜法与现行标准中的光学显微镜法测试结果一致.③台式扫描电子显微镜法的测试时间比现有标准方法缩短75 min以上,测试放大倍率和测试效率大幅提高.
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