SN/T 5697-2024 in English
VALIDRapid screening method for ZnO, Fe, Cl, Cd, and As in zinc oxide concentrates by portable X-ray fluorescence spectrometry
- Issued on:2024-12-31
- Implemented on:2025-07-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$131.00
| Standard No: | SN/T 5697-2024 |
| Document status: | VALID |
| Title in English: | Rapid screening method for ZnO, Fe, Cl, Cd, and As in zinc oxide concentrates by portable X-ray fluorescence spectrometry |
| Title in Chinese: | 氧化锌富集物中ZnO、Fe、Cl、Cd、As的快速筛查方法 便携式X射线荧光光谱法 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2024-12-31 |
| Implemented on: | 2025-07-01 |
| ICS Classification: | 77.120.30-Copper and copper alloys |
| Chinese Classification: | H13-Heavy metals and their alloys analysis method |
| Professional Classification: | SN-Import&Export Inspection |
| Related Keywords: | portable x-ray fluorescence spectrometer
portable x-ray fluorescence spectrometry introduction technical background x-ray fluorescence spectrometer on-site detection analysis requirementsportable x-ray fluorescence spectrometer zinc oxide concentrates |
Introduction
Technical Background and Evolution of Standards
The formulation of this standard is based on the dual needs of quality control in the zinc smelting industry and fast customs clearance. The technological evolution is reflected in:
| Technical Dimensions | Traditional Methods | Methods in this Standard |
|---|---|---|
| Detection Cycle | 2-3 Days (Laboratory Analysis) | 60 Seconds (On-site Screening) |
| Detection Limit | ICP-MS can reach ppb level | ZnO1.95%, Cd0.013% |
| Applicable scenarios | Laboratory environment | Portable X-ray Fluorescence Spectrometer On-site detection |
Analysis of key detection technologies
Core parameters of the instrument
Standard requirementsPortable X-ray Fluorescence Spectrometer must meet the following requirements:
- X-ray tube power≥2W
- Resolution≤180eV
- Measurement area diameter≥10mm
Calibration curve establishment
More than 3 gradient samples are required to establish the calibration curve. The gradient range of key elements is:
| Element | Gradient range |
|---|---|
| ZnO | 40.0%-84.0% |
| Cd | 0.20%-0.30% |
Safety Operation Specifications
The actual case shows that special attention should be paid when operating the portable X-ray fluorescence spectrometer:
- It is strictly forbidden to irradiate the human body
- The sample must be wrapped with 4μm polypropylene Mylar film
- The operator must have laboratory safety training qualifications
Implementation Suggestions
Enterprise Application Solutions
Zinc smelting enterprises can establish a three-level screening mechanism:
| Screening level | Technical means | Response time |
|---|---|---|
| Primary screening | This standard method | ≤5 minutes |
| Re-inspection confirmation | Laboratory ICP-MS | 24 hours |
Key points of customs supervision
It is recommended to configure a two-person operation mechanism at the port to ensure:
- Equipment is regularly checked
- Establish a reference material database
- Implement radiation safety monitoring
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