To assess the suitability of NH₄⁺ as a reagent ion for trace gas analysis by selected ion flow tube mass spectrometry, SIFT-MS, its ion chemistry must be understood. Thus, rate coefficients and product ions for its reactions with typical biogenic molecules and monoterpenes need to be experimentally determined in both helium, He, and nitrogen, N₂, carrier gases.

中文翻译：

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NH4+ 与氦和氮载气中的一些生物有机分子和单萜的反应动力学：用于选择离子流管质谱的潜在试剂离子

为了评估 NH ₄ ⁺作为试剂离子对通过选择离子流管质谱仪 SIFT-MS 进行痕量气体分析的适用性，必须了解其离子化学性质。因此，其与典型生物分子和单萜反应的速率系数和产物离子需要在氦、He 和氮气、N ₂载气中进行实验确定。