激光电离源离子迁移谱仪检测甲醛

被引:2
作者
刘宪云
孔祥和
季仁东
张树东
机构
[1] 曲阜师范大学物理工程学院
关键词
离子迁移谱(IMS); 迁移率; 甲醛; 分辨率;
D O I
10.16136/j.joel.2006.12.023
中图分类号
TN247 [光检测技术];
学科分类号
摘要
用激光作为离子迁移谱(IMS)仪的电离源,研究了在大气压力下对痕量物质甲醛进行检测的方法。介绍了实验装置,讨论了迁移管两端电压、温度以及激光能量不同的条件下获得的离子信号强度(减去本底后的强度),得到了很有意义的实验结果。结果表明,该方法行之有效,并且得到了很高的探测灵敏度,检测极限达到了ppb量级。
引用
收藏
页码:1507 / 1509
页数:3
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