Gravimetric Analysis of Gold Silver and Platinum Content Testing
In the mining sector, precious metals such as gold, silver, and platinum play a crucial role in the global economy. The accurate determination of their content is essential for quality management, compliance with international standards, and optimizing production processes. Gravimetric analysis offers an efficient method to quantify these valuable elements within ore samples or refined materials.
This service employs advanced techniques that ensure precision and reliability. Our team uses state-of-the-art instruments capable of detecting even trace amounts of precious metals. The gravimetric process involves dissolving the sample in a suitable solvent, separating the target metal from the matrix through precipitation, filtration, drying, and weighing. This approach adheres to international standards like ISO 11465:2008 for gold and platinum and ASTM D3967-13 for silver.
The accuracy of gravimetric analysis is enhanced by controlled laboratory conditions that minimize external variables affecting the results. Our facilities are equipped with temperature-controlled environments, precise scales, and experienced technicians who follow strict protocols to ensure consistent outcomes.
For quality managers, this service provides critical data on metal purity, enabling informed decisions about product specifications and market pricing strategies. Compliance officers rely on these tests to meet regulatory requirements set by bodies such as the Environmental Protection Agency (EPA) or the International Organization for Standardization (ISO).
R&D engineers benefit from detailed insights into material composition, which can lead to innovations in extraction methods or alloy formulations. Procurement professionals use this information to source high-quality raw materials and ensure supplier reliability.
Scope and Methodology
| Step | Description |
|---|---|
| Dissolution | The sample is dissolved in a mixture of nitric acid and aqua regia. |
| Precipitation | Gold, silver, and platinum are precipitated using thiourea and ammonia. |
| Filtration | The precipitates are filtered through a fine filter paper. |
| Drying | The collected precipitates are dried in an oven at 105°C for 24 hours. |
| Weighing | The dry precipitates are weighed accurately using an analytical balance. |
Benefits
Accurate quantification of precious metals, ensuring precise product specifications.
Compliance with international standards and regulatory requirements.
Support for R&D efforts in optimizing extraction processes and material properties.
Environmental and Sustainability Contributions
Reduction of waste through efficient sample preparation methods.
Minimization of chemical usage by recycling solvents and reagents.
Promotion of sustainable practices in mining operations, contributing to environmental stewardship.
