ION MOBILITY SPECTROMETRY OF HYDRAZINE, MONOMETHYLHYDRAZINE, AND AMMONIA IN AIR WITH 5-NONANONE REAGENT GAS
ION MOBILITY SPECTROMETRY OF HYDRAZINE, MONOMETHYLHYDRAZINE, AND AMMONIA IN AIR WITH 5-NONANONE REAGENT GAS
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DOI：
10.1021/ac00061a011
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发表时间：
1993-07-01
影响因子：
7.4
通讯作者：
JAMES, JT
中科院分区：
文献类型：
--
作者：
EICEMAN, GA;SALAZAR, MR;JAMES, JT
使用配备膜入口、Ni-63离子源、丙酮试剂气体和环境温度漂移管的手持式离子迁移谱仪连续监测空气中的肼（HZ）和一甲基肼（MMH）。响应特性包括检测限，6 ppb;线性范围，10-600 ppb;饱和响应，>2 ppm;和稳定的响应后15-30 min。氨通过具有与MMH和HZ相同的漂移时间的产物离子干扰肼检测。用5-壬酮代替丙酮试剂气体以改变产物离子的漂移时间并将氨与MMH和HZ分离。迁移率谱，离子识别质谱，碰撞诱导的解离和碎片截面的图案表明，漂移时间由离子簇平衡在迁移率谱仪的漂移区。实际方面，包括校准，稳定性和再现性的报告，从使用的手持迁移率光谱仪的亚特兰蒂斯号航天飞机在使命STS-37。
Hydrazine (HZ) and monomethylhydrazine (MMH) in air were monitored continuously using a hand-held ion mobility spectrometer equipped with membrane inlet, Ni-63 ion source, acetone reagent gas, and ambient temperature drift tube. Response characteristics included detection limit, 6 ppb; linear range, 10-600 ppb; saturated response, >2 ppm; and stable response after 15-30 min. Ammonia interfered in hydrazines detection through a product ion with the same drift time as that for MMH and HZ. Acetone reagent gas was replaced with 5-nonanone to alter drift times of product ions and separate ammonia from MMH and HZ. Patterns in mobility spectra, ion identifications from mass spectra, and fragmentation cross-sections from collisional-induced dissociations suggest that drift times are governed by ion-cluster equilibria in the drift region of the mobility spectrometer. Practical aspects including calibration, stability, and reproducibility are reported from the use of a hand-held mobility spectrometer on the space shuttle Atlantis during mission STS-37.