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4C1 - Pressed Pellet - XRF

The trace elements analyses are done on pressed powder pellets made from 6 g of sample. Spectral interferences are corrected from pre-calculated interfering factors. Because of the trace level (< 1000 ppm) of the analytes, only the mass absorptions are corrected for matrix effects. The mass absorption coefficients are derived from measuring the Compton scatter of the Rh-tube (e.g., Nisbet et al., 1979. Fortschr. Miner., volume 57, pp. 264-279). The background and mass absorption corrected intensities are then calculated against the calibrations constructed from 24 international geological reference materials.  In general, the limits of detection are between 1 to 5 ppm. Samples are measured on a Panalytical Axios Advanced using the Protrace program.

 

Code 4C1 Elements and Detection Limits (ppm)

Element

Detection Limit

Upper Limit

Element

Detection Limit

Upper Limit

Element

Detection Limit

Upper Limit

Ba

5

10,000

Nb

1

10,000

Sr

2

10,000

Co

5

1,000

Ni

4

4,000

V

5

10,000

Cr

5

10,000

Pb

5

1,000

Y

2

10,000

Cu

5

2,500

Rb

2

10,000

Zn

5

1,000

Ga

5

10,000

Sn

5

10,000

Zr

5

10,000

 

Note: Assays are recommended for values which exceed the upper limits.

 


Activation Laboratories Ltd. | 41 Bittern Street, Ancaster, Ontario, L9G 4V5, Canada | TF: +1.888.228.5227
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