01 Solution Summary
Ethylene product gas and process ethylene gas enter a dedicated GC flow path via gas-tight sampling and gas valve quantitative injection, where the ethylene main content, other light hydrocarbons, and permanent gas impurities are separated and determined. Quantification and quality control are arranged as follows: standard gases matched to the ethylene purity and impurity ranges are used for calibration, and applicable ranges are selected separately for the main component and trace impurities. Each analytical batch also includes blanks, calibration checks, and applicable quality control samples.
02 Standards and Method Basis
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 areEthylene product gas and process ethylene gas, and the analytes areEthylene main content, other light hydrocarbons, and permanent gas impurities. Pretreatment, injection, and detection configurations are determined according to the sample state, target concentration, and the formal method adopted.
04 Method Principle
After gas-tight connection and purging, gas samples 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 FID and TCD.
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 main ethylene content, other light hydrocarbons, and permanent gas impurities, with FID and TCD used to record the response of target components.
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 | FID, TCD | 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 FID, TCD, and gas valve quantitative injection for the separation and detection of main ethylene content, other light hydrocarbons, and permanent gas impurities in ethylene product gas and process ethylene gas.
09 Analysis workflow
10 Qualitative, Quantitative, and Quality Control
Calibration is performed using standard gases matched to the ethylene purity and impurity ranges, with applicable ranges selected separately for the main component and trace impurities. Standard gases, 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 FID and TCD.
- The gas valve and sample loop meet batch repeatability requirements.
12 Frequently Asked Questions
Why is gas analysis GC used for main ethylene content, other light hydrocarbons, and permanent gas impurities?
Gas analysis GC matches the physicochemical properties, sample inlet, and detection objectives of main ethylene content, other light hydrocarbons, and permanent gas impurities, and the complete workflow also covers the treatment, separation, detection, and data quality control of ethylene product gas and process ethylene gas.
What samples is this solution applicable to?
Applicable samples are ethylene product gas and process ethylene gas. When the sample source or matrix changes, the effect 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 main ethylene content, other light hydrocarbons, and permanent gas impurities; the main text and configuration are both 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 ethylene product gas and process ethylene gas into the analysis system, and the detection unit is configured for the response characteristics of main ethylene content, other light hydrocarbons, and permanent gas impurities; both must be consistent with the method used.
13 Related Solutions and Knowledge
Get Configuration and Technical Consultation
Please provide sample information for ethylene product gas and process ethylene gas, the concentration ranges of main ethylene content, other light hydrocarbons, and permanent gas impurities, testing batch size, method basis, and existing equipment. Huishi Instruments will use this to prepare a configuration list.
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