In the world of precious metals, accurate analysis is crucial. Whether you're a jeweler, a pawnbroker, or a geologist, knowing the exact composition of gold is essential for valuation and verification. Handheld X-ray fluorescence (XRF) analyzers have revolutionized this process, offering quick and non-destructive analysis on the spot. Here’s how you can effectively conduct gold analysis using a handheld XRF analyzer:

1. Understanding Handheld XRF Technology

Handheld XRF analyzers work by bombarding the sample with X-rays, which excite the atoms in the material. These excited atoms emit characteristic X-ray fluorescence that is then analyzed to determine the elemental composition of the sample. Each element, including gold, emits unique X-ray wavelengths, allowing the analyzer to identify and quantify the amount present.

2. Preparing for Analysis

Calibration: Ensure your XRF analyzer is calibrated for gold analysis. Calibration is typically done using known standards to accurately correlate X-ray emissions with gold content.

Sample Preparation: While handheld XRF analyzers are non-destructive, ensuring a clean and flat surface on the sample enhances accuracy. Wiping the sample with a clean cloth can remove surface contaminants that might interfere with the analysis.

3. Conducting the Analysis

Positioning the Analyzer: Hold the handheld XRF analyzer over the sample. Most devices have a laser or a visual guide to help you accurately position the X-ray beam on the sample.

Initiating the Analysis: Trigger the X-ray emission. The analyzer will emit X-rays onto the sample, and within seconds, it will collect the emitted X-rays from the sample's surface.

Interpreting the Results: Once the analysis is complete, the XRF analyzer displays the elemental composition on its screen. The results typically include the percentage of gold (Au) present along with other detected elements.

4. Ensuring Accuracy and Interpretation

Verification: For critical applications, verify results with multiple measurements or compare with laboratory assays if necessary.

Understanding Alloys: XRF analyzers can distinguish between pure gold and gold alloys, providing detailed compositions that include percentages of other metals like silver, copper, or platinum present in the sample.

5. Application and Benefits

On-Site Analysis: One of the primary advantages of handheld XRF analyzers is their portability and immediate results. This allows for real-time decision-making in various settings, from jewelry stores to mining sites.

Cost Efficiency: Eliminates the need for sending samples to laboratories, reducing turnaround time and costs associated with traditional assays.

6. Maintenance and Care

Regular Calibration Checks: Ensure your XRF analyzer is regularly calibrated according to manufacturer recommendations.

Storage and Handling: Store the analyzer in a clean and dry environment to prevent damage and ensure accurate readings over time.

The Aurora 900 series by Terra Scientific is a groundbreaking benchtop gold analyzer that offers a fast and exceptionally precise method for determining gold concentration or karat, catering to quality control, pricing, and practical applications. It enables users to perform immediate, cost-effective, and completely non-destructive tests to determine gold purity and verify alloy compositions.

Besides gold, Aurora 900 series in analyzing a wide range of other precious metals. The analyzer comes with a comprehensive elements analysis, such as Ag, Pd, Rh, Ru, Au, Pt, Ir, Zn, Cu, Re, Ta, Hf, Ni, Co, Fe, Ti, Cr, Mn, Pb, Bi, Zr, Sn, Sb, Cd, In, Ga, Ge, W, Os etc.(for models with SDD detectors). With the Terra Aurora 900 series, precisely measuring the concentration of precious metals in jewelry, coins, and other valuable items takes only seconds.

FEATURES OF AURORA 900: Operable independently with an interal touch screen panel or connected to a computer if necessary.  Capable of testing coatings/platings to identify counterfeit or gold-plated items, rapid and straightforward operation, delivering results in seconds via the color touchscreen.

7. Conclusion

Conducting gold analysis with a handheld XRF analyzer is a powerful tool for professionals needing accurate and immediate results. By following these steps and understanding the capabilities of your device, you can confidently assess the purity and composition of gold samples on-site, enhancing efficiency and reliability in your work.

Whether you're in the field, in a workshop, or at a pawnshop counter, the ability to quickly and accurately determine gold content with a handheld XRF analyzer empowers you to make informed decisions with confidence. Mastering the use of this technology opens new possibilities for efficiency and precision in the evaluation of precious metals.