The most common methods for preparing samples for XRF (X-ray fluorescence) analysis include no preparation (for powder samples), pressed pellets, and fused beads. Additional steps such as reducing particle size may be necessary depending on the sample's initial condition. Key considerations in sample preparation include particle size, choice of binder, sample dilution ratio, pressure used for pressing, and the thickness of the pellet. Proper sample preparation is crucial for accurate and reproducible results in XRF analysis, enhancing the accuracy of analytical outcomes. This process is generally straightforward, cost-effective, and can be automated, allowing laboratory operators to focus on other tasks. For more complex samples, homogenization using a jaw crusher might be necessary, and high throughput analysis may involve automatic weighing and dosing equipment. The basic equipment required for XRF sample preparation typically includes conventional platinum labware and a specialized fusion furnace.
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