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Chemiluminescent detector

A photoelectric detector and detector technology, applied in instruments, measuring devices, scientific instruments, etc., can solve problems such as affecting the accuracy of measurement and affecting the PMT baseline noise.

Active Publication Date: 2014-05-07
AGILENT TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Failure of these seals initially affects the baseline noise of the PMT and thus the accuracy of the measurement

Method used

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Embodiment Construction

[0021] In the following detailed description, for purposes of explanation and not limitation, representative embodiments disclosing specific details are set forth in order to provide a thorough understanding of the present invention. Descriptions of known systems, devices, materials, methods of operation, and methods of manufacture may be omitted so as not to obscure the description of the example embodiments. However, systems, devices, materials, and methods that are within the purview of one of ordinary skill in the art may be used in accordance with the representative embodiments.

[0022] Representative embodiments relate to devices including FPDs and FPDs for use in GC applications. Generally, the apparatus includes a transfer line having a heater block for controlling the temperature of a sample received from a GC separation column within a first temperature range. The transfer line is connected at one end to the sample input and at the opposite end to a nozzle arranged...

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Abstract

An apparatus for receiving a chemical species is disclosed. The apparatus includes an emission block configured to receive a vapor phase chemical species that is excited by chemical reaction in the emission block to provide an excited species that emits hot. The emission block has an interior portion having a surface. A coating is disposed over the surface and the coating reduces adsorption of the excited species onto the surface.

Description

technical field [0001] The present invention relates to flame photometric detectors. Background technique [0002] Gas chromatography (GC) is used to analyze and detect the presence of many different substances in gaseous or vaporized samples. Gas chromatography uses various types of detectors depending on the specific elements or compounds that need to be detected. Selective and / or highly sensitive detection of specific elements or compounds in specific chromatographic analyses, using different detectors. [0003] Typically, a flame photometric detector (FPD) is used to detect the presence of sulfur or phosphorus in a particular sample or analyte. Flame photometric detectors use a so-called chemiluminescent reaction in which compounds containing sulfur or phosphorus encounter a hydrogen-rich flame. Chemiluminescence uses the quantitative measurement of light emission from excited chemical species to determine analyte concentration. Chemiluminescence is typically emissio...

Claims

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Application Information

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IPC IPC(8): G01N30/74
CPCG01N21/766
Inventor R.P.罗兹
Owner AGILENT TECH INC