01 Solution Summary
High-purity oxygen and industrial oxygen enter a dedicated GC flow path through gas-tight sampling and gas valve quantitative injection, where impurities such as nitrogen, argon, hydrogen, methane, carbon monoxide, and carbon dioxide are separated and determined. Quantification and quality control use the following arrangements: calibration with certified reference gases compatible with the oxygen matrix, with detection channels assigned according to impurity type and target concentration. Analysis batches also include 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 areHigh-purity oxygen and industrial oxygen, and the analytes areImpurities such as nitrogen, argon, hydrogen, methane, carbon monoxide, and carbon dioxide. 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 for impurities such as nitrogen, argon, hydrogen, methane, carbon monoxide, and carbon dioxide, and TCD and FID are used to record the responses of the 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 | 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 for the separation and detection of impurities such as nitrogen, argon, hydrogen, methane, carbon monoxide, and carbon dioxide in high-purity oxygen and industrial oxygen.
09 Analysis workflow
10 Qualitative, Quantitative, and Quality Control
Calibration is performed with certified reference gases compatible with the oxygen matrix, and detection channels are assigned according to impurity type and target concentration. 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 TCD and FID.
- The gas valve and sample loop meet batch repeatability requirements.
12 Frequently Asked Questions
Why is gas analysis GC used for impurities such as nitrogen, argon, hydrogen, methane, carbon monoxide, and carbon dioxide?
Gas analysis GC matches the physicochemical properties, sample inlet, and detection objectives of impurities such as nitrogen, argon, hydrogen, methane, carbon monoxide, and carbon dioxide; the complete workflow also covers the handling, separation, detection, and data quality control of high-purity oxygen and industrial oxygen.
What samples is this solution applicable to?
Applicable samples are high-purity oxygen and industrial oxygen. When the sample source or matrix changes, the effects 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 impurities such as nitrogen, argon, hydrogen, methane, carbon monoxide, and carbon dioxide, and both the main text and configuration are limited to this scope of substances.
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 high-purity oxygen and industrial oxygen into the analysis system, and the detection unit is configured according to the response characteristics of impurities such as nitrogen, argon, hydrogen, methane, carbon monoxide, and carbon dioxide; both must be consistent with the method used.
13 Related Solutions and Knowledge
Get Configuration and Technical Consultation
Please provide sample information for high-purity oxygen and industrial oxygen, the concentration ranges of impurities such as nitrogen, argon, hydrogen, methane, carbon monoxide, and carbon dioxide, testing batch size, method basis, and existing equipment. Huishi Instruments will then prepare a configuration list.
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