A gas chromatograph and detection method for measuring the total content of sulfide in natural gas

A technology of gas chromatography and detection method, which is applied in the gas chromatograph and detection field for determining the total content of sulfide in natural gas, can solve the problems of tedious quantification, low sensitivity, spectral interference, etc., and achieves accurate test results, wide application range, calculation easy effect
CN105911158BActive Publication Date: 2018-04-17CHEM INST OF NAT INST OF MEASUREMENT & TESTING TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHEM INST OF NAT INST OF MEASUREMENT & TESTING TECH
Publication Date
2018-04-17

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Abstract

The invention discloses a gas chromatograph and detection method for determining the total content of sulfides in natural gas. The gas chromatograph comprises a quartz capillary column, a hydrogen flame ionization detector, a temperature control unit and a sulfur chemiluminescence reactor which are successively connected, wherein the quartz capillary column is a fused silica capillary column with uncoated inner walls; and the gas chromatograph further comprises a processor which is connected with the sulfur chemiluminescence reactor and a display unit. The gas chromatograph and detection method provided by the invention eliminate influence of hydrocarbons on determination of sulfide content, are more accurate in testing and have a wider application scope.
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Description

technical field

[0001] The invention relates to a gas chromatographic detection technology in analytical chemistry, in particular to a gas chromatograph and a detection method for measuring the total sulfide content in natural gas. Background technique

[0002] The sulfide content is one of the very important test indicators in natural gas and petrochemical industries; at present, the use of gas chromatography to determine the total sulfide content in natural gas is the most widely used method; there are many types of detectors, and the commonly used method for the determination of sulfide The detectors are Thermal Conductivity Detector (TCD), Flame Photometric Detector (FPD), Pulsed Flame Photometric Detector (PFPD), Atomic Emission Detector (AED), Electrochemical Detector (ED) and Mass Selective Detector (MSD), etc.

[0003] TCD is based on the principle that different analytical components and carrier gases have different thermal conductivity. It is a general-purpose non...

Claims

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