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7 - Water (Cold or Hot) Leach

A 0.75 g sample of -60 mesh B soil horizon material is leached in a water matrix at 30°C for 1 hour (Cold Water Leach) or at 60°C for 2 hours (Hot Water Leach). Two controls for every 49 samples are leached in the same procedure.

 

The solutions are analyzed on a Perkin Elmer ELAN 6000, 6100 or 9000 ICP/MS.  One matrix blank is analyzed per 49 samples. Two controls are run at the beginning and end of the group of 49 samples. Duplicate samples are leached and run every 10 samples.

 

Code 7 Water (Cold or Hot) Leach Elements and Detection Limits (ppb)

Element

Detection Limit

 

Element

Detection Limit

 

Element

Detection Limit

 

Element

Detection Limit

Ag

0.2

 

Eu

0.1

 

Na

5 ppm

 

Sr

1

Al

0.5 ppm

 

Fe

1 ppm

 

Nb

1

 

Ta

0.1

As

1

 

Ga

1

 

Nd

0.1

 

Tb

0.1

Au

0.05

 

Gd

0.1

 

Ni

3

 

Te

1

Ba

1

 

Ge

0.5

 

Pb

1

 

Th

0.1

Be

2

 

Hf

0.1

 

Pd

1

 

Ti

100

Bi

0.8

 

Hg

1

 

Pr

0.1

 

Tl

0.1

Br

5

 

Ho

0.1

 

Pt

1

 

Tm

0.1

Cd

0.2

 

I

2

 

Rb

1

 

U

0.1

Ce

0.1

 

In

0.1

 

Re

0.01

 

V

1

Cl

2,000

 

K

5 ppm

 

Ru

1

 

W

1

Co

1

 

La

0.1

 

Sb

0.1

 

Y

0.5

Cr

20

 

Li

2

 

Sc

100

 

Yb

0.1

Cs

0.1

 

Lu

0.1

 

Se

5

 

Zn

10

Cu

3

 

Mg

2 ppm

 

Sm

0.1

 

Zr

1

Dy

0.1

 

Mn

1

 

Sn

0.8

 

Er

0.1

 

Mo

1

 



 


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