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本文是我们研制的扩散式CO采样器的简要报道。 1 扩散式CO采样器的原理和结构 与扩散式NO_2(或SO_2)检测器基本相同。不同之处是利用CO与亚硫酸钯钾反应降低后者的吸光度,这是一种显色衰减过程而不是显色增强过程:
This article is a brief presentation of the diffuse CO sampler we have developed. The principle and structure of a diffused CO sampler are basically the same as the diffused NO 2 (or SO 2) detector. The difference is the use of CO and palladium potassium bisulfite reaction to reduce the latter’s absorbance, which is a process of color decay rather than color enhancement process: