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Isotope gas spectrometer instrument

一种同位素、气体的技术，应用在光谱学仪器领域，能够解决光检测信号波动、不均匀局部温度变化浓度变化、设备庞大等问题，达到消除温度差、准确测定吸收的效果

Inactive Publication Date: 2007-02-07
OTSUKA PHARM CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0016] The instrument disclosed in the above-mentioned documents can remove the CO which has an adverse effect on the determination. 2 , but need to have filled CO 2 Columns of absorbents, conduits, and large sealed boxes to house each device, resulting in bulky equipment
In addition, assembling the instrument requires laborious labor, such as sealing the large box
[0017] Moreover, the uneven flow of air in the sealed box can cause local temperature changes and occasional concentration changes, thus making the optical detection signal fluctuate.

Method used

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Embodiment Construction

[0061] Best Mode for Carrying Out the Invention

[0062] Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. This embodiment is suitable for spectroscopic determination of isotopic pairs of marker 313 After administration of the urea diagnostic drug of C, in the breath sample 13 CO 2 concentration or concentration ratio 13 Conc / 12 Conc.

[0063] 1. Breath test

[0064] Before administering the urea diagnostic drug to the patient, collect the exhaled breath of the patient into a gas sample bag with a capacity of about 250ml. Then give the patient the urea diagnostic drug, and after 10 to 15 minutes, collect the patient's breathing gas in a gas sample bag in the same manner as above collecting the breathing gas sample.

[0065] Figure 5 is the gas nozzle N that connects the gas sample bag 1 to the device 1 and N 2 Schematic diagram on isotope gas for spectroscopic measurement. The gas sample bag 1 compri...

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Abstract

An apparatus for spectrometrically measuring an isotopic gas is adapted to determine concentrations of a plurality of component gases in a gaseous test sample by introducing the gaseous test sample into a cell, then measuring intensity of light transmitted through the gaseous test sample at wavelengths suitable for the respective component gases, and processing data of the light intensity, characterized by gas injection means for sucking therein the gaseous test sample and then injecting the gaseous test sample into the cell by mechanically pushing out the gaseous test sample at a constant rate.

Description

[0001] This application is a divisional application of a Chinese patent application with an application date of May 24, 2002 and an application number of 02121910.9. technical field [0002] The invention relates to a spectroscopic instrument for measuring isotope gas concentration according to the difference of isotope light absorption characteristics. Background technique [0003] Isotope analysis can be used in medicine to diagnose diseases. When drugs containing isotopes are administered, the metabolic function of the living body can be determined by measuring the change of isotope concentration or concentration ratio. On the other hand, isotope analysis is also used to study photosynthesis and metabolism of plants and in geochemistry for ecological tracking. [0004] It is well known that stomach ulcers and gastritis are caused by bacteria called Helicobacter pylori (HP) and strains. If the patient has HP in the stomach, the patient is treated with an antibiotic or the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/31G01N21/59G01N21/01G01N21/25A61B5/08A61B10/00A61B5/097A61B5/00A61B5/083G01N1/22G01N21/03G01N21/11G01N21/27G01N21/35G01N33/00G01N33/497G01N35/08
CPCA61B5/0836A61B10/00A61B2010/0087G01N33/497A61B5/0059G01N33/0006G01N21/11G01N21/274G01N21/314G01N21/0332G01N21/3504A61B5/097
Inventor 久保康弘森泽且广座主靖池上英司筒井和典浜尾保森正昭丸山孝
Owner OTSUKA PHARM CO LTD
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