01 Solution Summary
Coal gas and related process gases enter a dedicated GC flow path through gas-tight sampling and gas valve quantitative injection, and hydrogen, oxygen, nitrogen, carbon monoxide, carbon dioxide, methane, and light hydrocarbons are separated and determined. Quantification and quality control use the following arrangements: calibration with multi-component standard gas, with detection channels assigned according to the response characteristics of permanent gases and light hydrocarbons. Each analytical batch also includes blanks, calibration checks, and applicable quality control samples.
02 Standards and Method Basis
Chinese standard: English standard titles on this page are descriptive translations. The cited Chinese text is authoritative.
Method basis: application method. The laboratory may enter the name and version of the adopted formal method into the project file.
03 Samples and Analytes
The specific samples areCoal gas and related process gases, and the analytes arehydrogen, oxygen, nitrogen, carbon monoxide, carbon dioxide, methane, and light hydrocarbons. Pretreatment, injection, and detection configurations are determined according to the sample state, target concentration, and the formal method adopted.
04 Method Principle
After gas samples undergo leak-tight connection and purging, they are quantitatively introduced into the chromatographic system by gas valve quantitative injection. Different components are separated through a dedicated flow path, and responses are acquired by TCD and FID.
05 Sample Collection and Pretreatment
Sealed gas container sampling obtains representative samples, after which gas line purging and steady-state confirmation are completed. The sampling container, pressure-reducing components, and tubing materials are compatible with the sample and target components.
06 Separation and Detection
The gas path, valve system, and chromatographic column are configured around hydrogen, oxygen, nitrogen, carbon monoxide, carbon dioxide, methane, and light hydrocarbons, and TCD and FID are used to record target component responses.
07 Instrument System Configuration
| Module | Configuration | Role in This Solution |
|---|---|---|
| Gas sampling | Airtight container, pressure-reducing, and connection components | Obtain a representative gas sample |
| Valve injection | Gas valve quantitative injection. | Quantitatively introduce the sample |
| GC flow path | GC | Complete separation of target components |
| Detection Unit | TCD, FID | Acquire component responses |
08 Huishi Instruments Compatible Products
GC-460 gas chromatograph
- Product name
- GC-460 gas chromatograph
- Model
- GC-460
- Brand
- Huishi Instruments
- Manufacturer
- Shanghai Huishi Instrument Equipment Co., Ltd.
- Product category
- Gas chromatograph
- Role of the solution
- It undertakes the tasks of sample injection, separation, detection, and data acquisition in GC analysis.
- Reason for suitability
- The GC-460 can be configured with TCD, FID, and gas valve quantitative injection, and is used for the separation and detection of hydrogen, oxygen, nitrogen, carbon monoxide, carbon dioxide, methane, and light hydrocarbons in coal gas and related process gases.
09 Analysis workflow
10 Qualitative, Quantitative, and Quality Control
Calibration is performed with multi-component standard gas, and detection channels are assigned according to the response characteristics of permanent gases and light hydrocarbons. Standard gas, system blanks, calibration checks, and replicate injections are used to monitor gas tightness and response stability.
11 Method and Configuration Selection
- Gas path materials are compatible with samples and target components.
- The detection channels are limited to TCD and FID.
- The gas valve and sample loop meet batch repeatability requirements.
12 Frequently Asked Questions
Why is gas analysis GC used for hydrogen, oxygen, nitrogen, carbon monoxide, carbon dioxide, methane, and light hydrocarbons?
Gas analysis GC matches the physicochemical properties, sample inlet, and detection targets of hydrogen, oxygen, nitrogen, carbon monoxide, carbon dioxide, methane, and light hydrocarbons; the complete workflow also covers the handling, separation, detection, and data quality control of coal gas and related process gases.
What samples is this solution applicable to?
Applicable samples are coal gas and related process gases. When the sample source or matrix changes, the influence of coexisting components on pretreatment, separation, and detection response should be re-evaluated.
What components or indicators are included in the detection targets?
The analytes are hydrogen, oxygen, nitrogen, carbon monoxide, carbon dioxide, methane, and light hydrocarbons; both the main text and configuration are bounded by this entity scope.
How is quality controlled for an analytical batch?
For each batch of samples, set up method blanks, calibration verification, duplicate samples, or applicable QC samples, and retain records of sample processing, instrument conditions, calibration, and calculations.
How are the sample introduction and detection modules matched in this solution?
Gas valve quantitative injection is responsible for introducing the treated coal gas and related process gases into the analysis system, and the detection unit is configured according to the response characteristics of hydrogen, oxygen, nitrogen, carbon monoxide, carbon dioxide, methane, and light hydrocarbons; both must be consistent with the method used.
13 Related Solutions and Knowledge
Get Configuration and Technical Consultation
Please provide sample information for coal gas and related process gases, the concentration ranges of hydrogen, oxygen, nitrogen, carbon monoxide, carbon dioxide, methane, and light hydrocarbons, testing batch size, method basis, and existing equipment. Huishi Instruments will then prepare a configuration list.
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