Infrared spectrometer for measuring the isotope ratio

摘要

(57) Abstract The infrared spectrometer in order to measure isotope ratio is offered. SolutionsThe infrared spectrometer in order to decide the isotope ratio of vapor chemical compound (100), the illuminant (102), the spectrum selector (138), the sample room (106), the infrared light detector (112) and the processor (114) it includes. The spectrum selector (138), in order to be piled up with the wave length territory which is absorbed the chemical compound which includes the 1st isotope mainly, or by the aforementioned chemical compound which includes the 2nd isotope, the wave length window of the infrared territory which covers the wave length territory whose it is possible to select the wave length window alternatively, is made to pass selectively. The sample room (108), the gaseous sample is accommodated, at the same time the entrance of the gas and the exit of the gas possess. When the infrared light spectrometer (100), it can use in order to detect the isotope ratio of carbon dioxide, ¹³ CO₂ content rises, for example, infection or the existence of metabolism activity of the unique enzyme by the H. pirori germ is suggested. If according to desirable execution form, the range of vision mirror (404) with the special multiple pass optical cell which perhaps the percentage objective (406) with is included (400) is used.