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Ultratrace 1 - Aqua Regia - ICP/MS

A 0.5 g sample is digested in aqua regia at 90 °C in a microprocessor controlled digestion block for 2 hours. Digested samples are diluted and analyzed by Perkin Elmer Sciex ELAN 6000, 6100 or 9000 ICP/MS. One blank is run for every 68 samples. An in-house control is run every 33 samples. Digested standards are run every 68 samples. After every 15 samples, a digestion duplicate is analyzed. Instrument is recalibrated every 68 samples.

 

Code Ultratrace-1 Elements and Detection Limits (ppm)

Element

Detection Limit

Upper Limit

Element

Detection Limit

Upper Limit

Element

Detection Limit

Upper Limit

Ag

0.002

100

Ge*

0.1

500

S­+

1%

20%

Al*

0.01%

8%

Hf*

0.1

500

Sb*

0.02

500

As

0.1

10,000

Hg

10

10,000 ppb

Sc*

0.1

10,000

Au*

5 ppb

10,000 ppb

Ho*

0.1

1000

Se*

0.1

10,000

B*

1

5,000

In*

0.02

500

Sm*

0.1

100

Ba*

0.5

6,000

K*

0.01%

5%

Sn*

0.05

200

Be*

0.1

1,000

La*

0.5

10,000

Sr*

0.5

5,000

Bi*

0.02

2,000

Li*

0.1

10,000

Ta*

0.05

50

Ca*

0.01%

50%

Lu*

0.1

100

Tb*

0.1

100

Cd *

0.01

-

Mg*

0.01%

10%

Te*

0.02

500

Ce*

0.01

10,000

Mn*

1

10,000

Th*

0.1

200

Co

0.1

5,000

Mo*

0.01

10,000

Ti*

0.001%

10%

Cr*

0.5

10,000

Na*

0.001%

5%

Tl*

0.02

500

Cs*

0.02

500

Nb*

0.1

500

Tm*

0.1

1,000

Cu

0.01

10,000

Nd*

0.02

5000

U

0.1

10,000

Dy*

0.1

1000

Ni*

0.1

10,000

V*

1

1,000

Er*

0.1

1000

P*

0.001%

5%

W*

0.2

200

Eu*

0.1

100

Pb

0.01

5,000

Y*

0.01

500

Fe*

0.01%

30%

Pr*

0.1

1000

Yb*

0.1

200

Ga*

0.02

500

Rb*

0.1

500

Zn*

0.1

5,000

Gd*

0.1

1000

 

Re*

0.001

100

 

Zr*

0.1

5,000

 

Notes:     

 Au is semi-quantitative due to the small sample size.
* Element may only be partially extracted. Unaltered silicates and resistate minerals may not be dissolved.

+ Sulphide sulphur and soluble sulphides are extracted.

 


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