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4B - Lithium Metaborate/Tetraborate Fusion - ICP

Samples are prepared and analyzed in a batch system. Each batch contains a method reagent blank, certified reference material and 17% replicates. Samples are mixed with a flux of lithium metaborate and lithium tetraborate and fused in an induction furnace. The molten melt is immediately poured into a solution of 5% nitric acid containing an internal standard, and mixed continuously until completely dissolved (~30 minutes). The samples are run for major oxides and selected trace elements (Code 4B) on a combination simultaneous/sequential Thermo Jarrell-Ash ENVIRO II ICP or a Varian Vista 735 ICP. Calibration is performed using 7 prepared USGS and CANMET certified reference materials. One of the 7 standards is used during the analysis for every group of ten samples.

 

Totals should be between 98.5% and 101%. If results come out lower, samples are scanned for base metals.  Low reported totals may indicate sulphate being present or other elements like Li which won’t normally be scanned for. Samples with low totals however are automatically re-fused and reanalyzed.

 

 

Fusion ICP                                                                             Trace Elements

Oxide

Detection

Limit (%)

 

Element

Detection

Limit (ppm)

Al2O3

0.01

 

Ba

2

CaO

0.01

 

Be

1

Fe2O3

0.01

Sc

1

K2O3

0.01

 

Sr

1

MgO

0.01

 

V

5

MnO

0.001

 

Y

1

Na 2 O

0.01

 

Zr

2

P2 O 5

0.01

 

SiO2

0.01

 

TiO2

0.001

 

 

 

Loss on Ignition

0.01

 

 

 


 

Code 4B options:


Code 4B1 : recommended f or accurate levels of base metals (Cu, Pb, Zn, Ni and Ag) .  


Code 4B-INAA : recommended for As, Sb, high W >100 ppm and Cr > 1,000 ppm.

 

 


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