公开(公告)号：US20040245471A1

公开(公告)日：2004-12-09

申请号：US10766327

申请日：2004-01-29

Applicant: SpectraSensors, Inc.

Inventor： Randy Dean May

IPC: G01N021/35

CPC classification number: G01N21/39 ,  G01N21/3504

Abstract: A system and method are disclosed for the detection of ethylene oxide in a sample of gas, such as air. The system includes a light source operating at a wavelength where molecules typically found within air absorb light at a substantially lower level than ethylene oxide molecules. Exemplary wavelengths are in the range of approximately 1.6-2.2 nullm, and in particular at 1.6 nullm, 1.645 nullm, 1.692 nullm, 2.195 nullm, 2.2 nullm, 2.216 nullm, passes through the sample of gas to be detected by a detector. In one embodiment, the light source is a tunable diode laser or a VCSEL and the ethylene oxide level is determined using harmonic spectroscopy.

Abstract translation: 公开了用于检测诸如空气的气体样品中的环氧乙烷的系统和方法。 该系统包括以通常在空气中发现的分子以比环氧乙烷分子基本上更低的水平吸收光的波长操作的光源。 示例性的波长在1.6-2.2μm的范围内，特别是1.6μm，1.645μm，1.692μm，2.195μm，2.2μm，2.216μm，通过检测器检测的气体样品。 在一个实施例中，光源是可调谐二极管激光器或VCSEL，并且使用谐波光谱确定环氧乙烷水平。