报道了自主研制的光电离-离子迁移谱装置的基本结构和性能.采用10.6 eV Kr灯为电离源,以苯为检测样品,对迁移电场电压、离子门电压和脉冲宽度参数进行优化,得到最佳装置参数为离子门脉冲宽度0.15 ms,离子门电压80 V,迁移区电压2153 V.使用指数稀释方法制备样品浓度,获得了离子迁移谱检测苯的标准曲线,对苯的检测限为400 ppt,检测线性动态范围跨越三个数量级.
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