XRF Characterization, X-ray Fluorescence Spectroscopy Analytical Service

XRF testing is semi-quantitative and should be used as a reference for elemental content percentages. Due to inherent limitations of the technique, especially its lower stability and accuracy in detecting light elements (C, N, O, F), it is recommended to use alternative methods if high accuracy is required.

Measurable Element Range: The standard detectable range is from Sodium (11Na) to Uranium (92U). If detection of C, N, O, or F is required, please indicate this in the notes.

Sample Quantity Requirements:

• Powder samples: Minimum of 2 grams is required. Grinding is necessary if:

  1. The particles are too large (cannot pass through a 200-mesh sieve);

  2. The powder cannot be compressed into a solid pellet (boric acid must be added for grinding and pressing).

• Bulk or film samples: The size should be between 2.5 cm and 4.5 cm. Please clearly mark the testing surface (which must be flat and smooth). Ensure the sample is as dry as possible before testing.

• Liquid samples: At least 20 mL is required.

Samples with carbon content exceeding 10% should be ashed prior to testing.

Detection Limit: The detection limit of XRF is approximately 200 ppm. If the element concentration is below this threshold, XRF may not be suitable. For elements below 100 ppm, the results should be considered for reference only, as instrumental noise peaks may exceed this level. Please choose the testing method with caution.