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Ultratrace 4 - "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, 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 Ultratrace-4 Elements and Detection Limits (ppm except where noted)

Element

Detection Limit

Upper Limit

Element

Detection Limit

Upper Limit

Element

Detection Limit

Upper Limit

Ag

0.05

100

Ge

0.1

500

Sb

0.1

500

Al

0.01%

10%

Hf

0.1

500

Se

0.1

1,000

As

0.1

10,000

Hg

10 ppb

10,000 ppb

Sm

0.1

100

B

20

6000

Ho

0.1

1,000

Sn

1

200

Ba

1

5,000

In

0.1

100

Sr

0.2

1,000

Be

0.1

1,000

K

0.01%

5%

Ta

0.1

1000

Bi

0.02

2,000

La

0.1

10,000

Tb

0.1

100

Ca

0.01%

50%

Li

0.5

400

Te

0.1

500

Cd

0.1

1,000

Lu

0.1

100

Th

0.1

500

Ce

0.1

10,000

Mg

0.01%

50%

Tl

0.05

500

Co

0.1

500

Mn

1

10,000

Tm

0.1

1000

Cr

1

5,000

Mo

0.05

10,000

U

0.1

10,000

Cs

0.05

100

Na

0.01%

3%

V

1

1,000

Cu

0.2

10,000

Nb

0.1

500

W

0.1

200

Dy

0.1

5,000

Nd

0.1

10,000

Y

0.1

10,000

Er

0.1

1,000

Ni

0.5

5,000

Yb

0.1

5,000

Eu

0.05

100

Pb

0.5

5,000

Zn

0.2

10,000

Fe

0.01%

50%

Pr

0.1

1,000

Zr

1

5,000

Ga

0.1

500

Rb

0.2

5000

Gd

0.1

5,000

 

Re

0.001

100

 

 

 

 

 

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

Unaltered silicates and resistate minerals may not be dissolved.

 


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