Elements

Method

Code

Determination range, %

Object

Cu

Acid digestion - volumetry

Titr -35*

5.0-40.0

Copper ore, concentration

Zn

Acid digestion - volumetry

Titr -36*

5.0 - 60.0

Polymetalic ore, zinc ore and concentration

Pb

Acid digestion - volumetry

Titr -37*

5.0-80.0

Polymetalic ore, lead ore and concentration

Sn

Melting with sodium peroxide - volumetry

Titr -40

0.10- 80.0

Tin ore and concentration

W

Melting with sodium peroxide - spectrophotometry

SPhM -18*

0.05-2.0

rock, tungsten ore

W

Acid digestion, Melting with sodium peroxide - grav, spectrophotometry

Grav -44*

0.5- 70.0

Tungsten ore and concentration

Mo

 Melting with sodium peroxide - spectrophotometry

SPhM -19*

0.005-1.0

rock, molybdenium ore

Mo

Acid digestion, Melting with sodium peroxide - grav, spectrophotometry

Grav -39*

1.0-60.0

molybdenium concentration

Cr

Melting with sodium peroxide - spectrophotometry

SPhM -20*

0.005-3.0

Rock, chromium ore

Cr

Acid digestion - volumetry

Titr -34

3.0 - 50.0

chromite, concentration

Та

spectrophotometry

SPhM -42

0.001-1.0

Rock, ore

Nb

spectrophotometry

SPhM -42

0.003-3.0

Zr

Melting- spectrophotometry

SPhM -47

0.01-1.0

Rock, ore

As

Acid digestion - spectrophotometry

SPhM -31

0.05- 1.0

Rock, ore