Valid

GBZ 122-2006Surface chemical analysis - Glow discharge mass spectrometry - Operating procedures (English PDF)

离子感烟火灾探测器放射防护标准

Preview PDF

This is a limited preview

Buy now to download the full PDF (12 pages)

Need quotation for your management?

Get a formal quotation for GBZ 122-2006 in 30 minutes.

Issued by

State Administration for Market Regulation

Level / Type

National · Mandatory

Issue date

December 3, 2025

Implementation date

December 3, 2025

Scope

GBZ 122-2006 is the English-translated version of 离子感烟火灾探测器放射防护标准.

GBZ 122-2006 — This document describes the operation and usage procedures for glow discharge mass spectrometry (GD-MS). Several GD-MS systems currently in use come from different...

For manufacturers, this document describes the differences in applicable operating procedures. Note. This document is intended to be used in conjunction with the instrument manufacturer's operating manual and recommendations.

Found what you need?

Document preview — GBZ 122-2006

National Standard of the People's Republic of China

ICS: 71.040.40
Classification: G 04

Issued by: State Administration for Market Regulation

Preface
1 Scope
2 Normative References
3 Terms and Definitions
4 Principle
5 Instruments
6 Routine Operations 5.
7 Calibration 6.
8 Data Acquisition
9 Quantitative
References

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents".

Drafting.

This document is equivalent to ISO/T S15338.2020 "Surface Chemical Analysis - Glow Discharge Mass Spectrometry Operating Procedures", and the document type is changed from...

The ISO technical specifications have been adapted into my country's standardization guidance technical documents.

Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.

This document was proposed and is under the jurisdiction of the National Technical Committee on Standardization of Surface Chemical Analysis (SAC/TC608).

1 Scope

This document describes the operation and usage procedures for glow discharge mass spectrometry (GD-MS). Several GD-MS systems currently in use come from different...

For manufacturers, this document describes the differences in applicable operating procedures.

Note. This document is intended to be used in conjunction with the instrument manufacturer's operating manual and recommendations.

2 Normative references

This document has no normative references.

3 Terms and Definitions

This document contains no terms or definitions.

4 Principles

In a glow discharge power supply, a potential difference is applied between the cathode (sample to be tested) and the anode, and an inert gas (usually acetic acid) is introduced.

Argon gas can be used to form plasma. This potential difference can be direct current (DC) or radio frequency (RF). The advantage of RF is that it can be directly divided.

Electrolytic insulating materials. Inert gas ions and fast neutral particles formed in the plasma are introduced to the sample surface, and their collisions cause...

Neutral particles are generated by sputtering onto the sample surface. These neutral particles diffuse into the plasma and subsequently exist within the plasma's isoelectric region.

The electrons are ionized and can then be fed into a mass spectrometer for analysis. Both magnetic mass spectrometry and time-of-flight mass spectrometry can be used for analysis.

5 Instruments

5.1 Ion Source

There are two basic types of ion sources used in GD-MS. low-flow-rate or "static" ion sources and high-flow-rate ion sources.

Both types of ion sources can accept needle-shaped or sheet-shaped samples. A typical needle-shaped sample is 20 mm in length and 3 mm in diameter, while...

The diameter of the sheet-like specimens ranges from 20 mm to 40 mm. More detailed information regarding specimen size will be provided later.

In low-flow-rate ion sources, the plasma sample cell is actually a sealed unit, fixed within a high-vacuum chamber, and has a slit or the small orifice serves as the exit point, allowing ions to leave the sample cell and enter the mass spectrometer. The sample cell itself maintains the anode potential, i.e., the accelerating current of the mass spectrometer.

The sample is held at the cathode potential, typically 1 kV lower than the anode potential. In this type of ion source, the argon flow rate is usually [missing value].

The flow rate should be 1 sccm (volume flow rate under standard conditions, cm³/min) or less, and the gas used (usually argon) should have very high purity.

99.99995% or higher. Plasma power is relatively low, typically 2W or 3W; the potential difference is usually 1kV, and the current is 2mA.

Or 3mA.

Figure 1 is a schematic diagram of the geometry of a needle-shaped sample cell low-flow-rate ion source. Gas is introduced into the sample cell through a metal tube, and the metal tube is...

The sample cell forms a metal-to-metal seal. In some systems, polyetheretherketone (PEEK) tubing is used instead of metal tubing, which has a sealing feature.

The sealing ring is connected to the sample cell. The needle-shaped sample is fixed in a clamp at the cathode potential, while the sample cell is at the anode potential.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 12 pages — is available in the English PDF.

How to Download GBZ 122-2006

1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.