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High sensitivity flame photometric detector

A flame photometric and detector technology, used in material excitation analysis, thermal excitation analysis, etc., can solve the problems of reducing the sensitivity of the detector and the high temperature of the detector, and achieve the effect of high detection sensitivity and high flame luminous intensity

Inactive Publication Date: 2013-07-31
上海天美科学仪器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the increase in the temperature of the flame nozzle area will cause the overall temperature of the detector to be too high, thereby reducing the sensitivity of the detector.

Method used

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  • High sensitivity flame photometric detector
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Embodiment Construction

[0019] like figure 1 As shown, the novel flame photometric detector of the present invention includes a housing 100 . The housing 100 is composed of a base 101 , a base 102 , a cover 103 , and an optical path seat 104 .

[0020] The base 101 is a cylindrical structure with a cavity 1011 therein. One end of the base is blocked by the base 102 , and the other end is blocked by the cover 103 . The cover 103 has a throttling air hole 301, the outside of the throttling air hole 301 is connected to a carrier gas connector 302, and the carrier gas connector 302 has a carrier gas channel 3021 with a diameter larger than the throttling air hole 301; Inside the air pipe 303, the inner diameter of the air pipe 303 is consistent with the throttle air hole 301. An inner nozzle 401 is sleeved on the end of the trachea 303 , and an outer nozzle 402 is sleeved outside the inner nozzle 401 . The root of the outer nozzle 402 extends all the way to the base 102 and is fixed by a sleeve 403 p...

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PUM

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Abstract

The invention discloses a high sensitivity flame photometric detector. The high sensitivity flame photometric detector comprises a shell body, a combustion chamber inside the shell body, a combustion nozzle installed at the bottom of the combustion chamber, a light path inside the shell body and is communicated with the combustion chamber, and a gas channel communicated with the combustion nozzle, wherein the periphery of a nozzle portion of the combustion nozzle inside the combustion chamber is covered by a quartz cover, and the quartz cover situated at the position of flame is a spheroid. The high sensitivity flame photometric detector has the advantages of being high in flame light intensity and high in detection sensitivity.

Description

technical field [0001] The invention belongs to the technical field of detection instruments, and relates to a flame photometric detector. Background technique [0002] The flame photometric detector uses a hydrogen-rich flame to decompose organic compounds containing sulfur and phosphorus heteroatoms to form excited state molecules. When they return to the ground state, they emit light of a certain wavelength. This light intensity is proportional to the measured component content. Therefore, it is a detection method whose mechanism is the relationship between matter and light, and belongs to photometry. Because it emits light after excitation, it is a molecular emission detector in photometry. The light-emitting component structure of the flame photometric detector is the core of the detector, which is closely related to the performance of the detector. [0003] At present, the luminous intensity of the flame of the tested substance of the flame photometric detector is r...

Claims

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Application Information

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IPC IPC(8): G01N21/71
Inventor 赵国宏周志康
Owner 上海天美科学仪器有限公司