Weblims     OWA     Home     Contact Us    

Actlabs
Back to Home


150 of 150    Prev     

UT-4M - "Near Total" Digestion ICP/MS

A 0.25 g sample is digested with four acids beginning with hydrofluoric, followed by a mixture of nitric and perchloric acids. This is then heated using precise programmer controlled heating in several ramping and holding cycles which takes the samples to dryness.  After dryness is attained, samples are brought back into solution using hydrochloric and nitric acids. This digestion may not be completely total if resistate minerals are present.  As, Sb and Cr may be partially volatilized.


An in-lab standard (traceable to certified reference materials) or certified reference materials are used for quality control.


Digested samples are diluted and analyzed by Perkin Elmer Sciex ELAN 6000, 6100 or 9000 ICP/MS. One blank is run for every 40 samples. In-house control is run every 20 samples.  Digested standards are run every 80 samples. After every 15 samples, a digestion duplicate is analyzed. Instrument is recalibrated every 80 samples.

 

Code UT-4M Elements and Detection Limits (ppm)

Element

Detection Limit

Upper Limit

 

Element

Detection Limit

Upper Limit

 

Element

Detection Limit

Upper Limit

Ag

0.1

100

 

Hf 

0.1

1,000

 

Sb 

0.1

4,000

Al 

0.01 %

20 %

 

0.01 %

10 %

 

Sc

1

200

As 

1

10,000

 

La 

0.1

2,000

 

Sn 

0.1

2,000

Au 

100 ppb

2,000 ppb

 

Li

0.1

2,000

 

Sr

1

10,000

Ba 

1

10,000

 

Mg 

0.01 %

30 %

 

Ta 

0.1

2,000

Be 

1

1,000

 

Mn 

1

10,000

 

Th 

0.1

4,000

Bi

0.1

4,000

 

Mo

0.1

4,000

 

Ti 

0.001 %

10 %

Ca

0.01 %

40 %

 

Na

0.001 %

10 %

 

Tl

0.05

10,000

Cd

0.1

4,000

 

Nb 

0.1

2,000

 

0.1

4,000

Ce 

1

2,000

 

Ni

0.1

10,000

 

V

4

10,000

Co

0.2

4,000

 

P

0.001 %

5 %

 

0.1

200

Cr 

1

10,000

 

Pb

0.1

5,000

 

0.1

2,000

Cs 0.1 10,000
Rb 0.1 2,000
Zn  1 10,000

Cu

0.1

10,000

 

S +

1 %

10 %

 

Zr 

0.1

2,000

Fe 

0.01 %

60 %

 




 




Notes:  

Extraction of each element by 4-Acid Digestion is dependent on mineralogy.

+ Sulphide sulphur and soluble sulphates are extracted

 


Activation Laboratories Ltd. | 41 Bittern Street, Ancaster, Ontario, L9G 4V5, Canada | TF: +1.888.228.5227
Search | Privacy | Contact Us | News RSS | Login