01 Solution Summary
High-purity helium and ultra-high-purity helium enter a dedicated GC flow path through airtight sampling and gas valve quantitative injection, where trace impurities such as hydrogen, oxygen, nitrogen, methane, carbon monoxide, and carbon dioxide are separated and determined. The following arrangements are used for quantification and quality control: calibration with certified standard gases matched in matrix and range, and monitoring of trace impurity determination through system blanks and calibration checks. Analysis batches also include blanks, calibration checks, and applicable QC 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 helium and ultra-high-purity helium, and the analytes areTrace impurities such as hydrogen, oxygen, nitrogen, 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 airtight connection and purging, gas samples enter the chromatographic system via gas valve quantitative injection. Different components are separated through dedicated flow paths, and responses are acquired by PDD.
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 trace impurities such as hydrogen, oxygen, nitrogen, methane, carbon monoxide, and carbon dioxide, and PDD is 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 | PDD | Acquire component responses |
08 Huishi Instruments system configuration
This application requiresGas chromatography (GC) analysis systemComplete the analysis of trace impurities such as hydrogen, oxygen, nitrogen, methane, carbon monoxide, and carbon dioxide. When selecting a configuration, the sample state of high-purity helium and ultra-high-purity helium, gas valve quantitative injection, and detection requirements should be taken into account to determine the injection interface, detector, and data system.
09 Analysis workflow
10 Qualitative, Quantitative, and Quality Control
Calibration with certified standard gases matched in matrix and range, and monitoring of trace impurity determination through system blanks and calibration checks. Standard gases, system blanks, calibration checks, and replicate injections are used to monitor airtightness and response stability.
11 Method and Configuration Selection
- Gas path materials are compatible with samples and target components.
- The detection channel is limited to PDD.
- The gas valve and sample loop meet batch repeatability requirements.
12 Frequently Asked Questions
Why is gas chromatography (GC) for gas analysis used for trace impurities such as hydrogen, oxygen, nitrogen, methane, carbon monoxide, and carbon dioxide?
Gas chromatography (GC) for gas analysis is matched to the physicochemical properties, sample inlet, and detection targets of trace impurities such as hydrogen, oxygen, nitrogen, methane, carbon monoxide, and carbon dioxide; the complete workflow simultaneously covers the treatment, separation, detection, and data quality control of high-purity helium and ultra-high-purity helium.
What samples is this solution applicable to?
Applicable samples are high-purity helium and ultra-high-purity helium. When the sample source or matrix changes, the effects of coexisting components on pretreatment, separation, and detection response should be reevaluated.
What components or indicators are included in the detection targets?
The analytes are trace impurities such as hydrogen, oxygen, nitrogen, methane, carbon monoxide, and carbon dioxide; 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 high-purity helium and ultra-high-purity helium into the analysis system, and the detection unit is configured for the response characteristics of trace impurities such as hydrogen, oxygen, nitrogen, 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 the sample information for high-purity helium and ultra-high-purity helium, concentration ranges of trace impurities such as hydrogen, oxygen, nitrogen, methane, carbon monoxide, and carbon dioxide, testing batch size, method basis, and existing equipment. Huishi Instruments will compile a configuration list from this.
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