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Multi-acid digests Multi-acid (Four acid) digestion is a very effective dissolution procedure for a large number of mineral species and is suitable for a wide range of elements. Multi-acid digestion uses a combination of HNO3 (nitric acid), HF (hydrofluoric acid), HClO4 (perchloric acid) and HCl (hydrochloric acid). Because hydrofluoric acid dissolves silicate minerals, these digestions are often referred to as “near-total digestions”. Lower and upper limit can vary slightly among SGS laboratories because some laboratories may not have access to high purity reagents and consumables. Please contact your SGS customer service agent to receive the reporting limits you need. Refractory minerals such as oxides have limited solubility in multi-acid (Four acid) digestions. Often elements can precipitate or volatilize during digestion. These factors can compromise analytical results for Al, As, Ba, Cr, Hf, Mo, Mn, Nb, Pb, Sb, Se, Sn, Te, Th, Ti, Ta, U, W, Zr and rare earth elements in some sample types.
ICP21B20 & IMS21B20 AQUA REGIA DIGESTION / COMBINED ICP-OES AND ICP-MS PACKAGE ELEMENTS AND LIMIT(S) Ag 0.01 - 100 ppm Hg 0.01 - 100 ppm
Sc 0.1 - 10,000 ppm Se 1 - 1,000 ppm Sn 0.2- 1,000 ppm Sr 0.5 - 10,000 ppm Ta 0.01 - 10,000 ppm Tb 0.02 - 10,000 ppm Te 0.05 - 1,000 ppm Th 0.05 - 10,000 ppm
Al 0.005 - 15%
In 0.005 - 500 ppm
As 1 - 10,000 ppm Ba 2 - 10,000 ppm Be 0.05 - 100 ppm Bi 0.01 - 10,000 ppm
K 0.005 - 15%
La 0.1 - 10,000 ppm Li 0.5 - 10,000 ppm Lu 0.01 - 1,000 ppm Mg 0.001 - 15% Mn 2 - 10,000 ppm Mo 0.05 - 10,000 ppm
Ca 0.002 - 15%
Cd 0.01 - 10,000 ppm Ce 0.02 - 1,000 ppm Co 0.1 - 10,000 ppm Cr 1 - 10,000 ppm Cs 0.05 - 1,000 ppm Cu 0.5 - 10,000 ppm
Ti 0.001 - 15%
Na 0.005 - 15%
Tl 0.02 - 10,000 ppm U 0.05 - 10,000 ppm
Nb 0.05 - 1,000 ppm Ni 0.2 - 10,000 ppm
V 1 - 10,000 ppm
GE_ICP40Q12 FOUR ACID DIGESTION / ICP-OES PACKAGE ELEMENTS AND LIMIT(S) Ag 2 - 100 ppm
P 0.003 - 15%
W 0.05 - 10,000 ppm Y 0.05 - 10,000 ppm Yb 0.1 - 100 ppm Zn 1 - 10,000 ppm Zr 0.5 - 10,000 ppm
Fe 0.01 - 15%
Pb 0.2 - 10,000 ppm Rb 0.05 - 10,000 ppm
Fe 0.01 - 10% K 0.01 - 15%
S 0.005 - 10%
Ga 0.1 - 10,000 ppm Ge 0.1 - 10,000 ppm Hf 0.05 - 500 ppm
Al 0.01 - 15%
Sb 5 - 10,000 ppm Sc 0.5 - 10,000 ppm Sn 10 - 10,000 ppm Sr 0.5 - 10,000 ppm Ti 0.001 - 15% V 2 - 10,000 ppm W 10 - 10,000 ppm Y 0.5 - 10,000 ppm Zn 1 - 10,000 ppm Zr 0.5 - 10,000 ppm
S 0.01 - 5%
As 3 - 10,000 ppm Ba 1 - 10,000 ppm Be 0.5 - 2500 ppm Bi 5 - 10,000 ppm Ca 0.005 - 15% Cd 1 - 10,000 ppm Co 1 - 10,000 ppm Cr 1 - 10,000 ppm Cu 0.5 - 10,000 ppm
La 0.5 - 10,000 ppm Li 1 - 10,000 ppm Mg 0.002 - 15% Mn 2 - 10,000 ppm Mo 1 - 10,000 ppm Na 0.005 - 15% Ni 1 - 10,000 ppm
Sb 0.05 - 10,000 ppm
GO_ICP21B100 AQUA REGIA DIGESTION FOR OVER RANGE ELEMENTS/ICP-OES ELEMENTS AND LIMIT(S) Ag 0.001 - 0.1% Cu 0.01 - 30%
Ni 0.001 - 10% Pb 0.001 - 10% S 0.01 - 30% Zn 0.01 - 10%
As 0.01 - 10% Cd 0.001 -10% Co 0.001 - 10%
Fe 0.01 - 30% Mn 0.01 - 10% Mo 0.001 - 10%
P 0.001 - 15%
Pb 2 - 10,000 ppm
Additional elements are available on request.
GE_HAS21B20 TWO ACID / AQUA REGIA DIGESTION / HYDRIDE AAS PACKAGE ELEMENTS AND LIMIT(S) As 0.1 - 500 ppm Sb 0.1 - 500 ppm
GE_ICP40Q12 & GE_IMS40Q12 FOUR ACID DIGESTION / COMBINED ICP-OES AND ICP-MS PACKAGE ELEMENTS AND LIMIT(S) Ag 0.02 - 100 ppm K 0.01 - 15%
Te 0.1 - 500 ppm
Bi 0.1 - 500 ppm
Se 0.1 - 500 ppm
Sn 0.2 - 10,000
Al 0.01 - 15%
La 0.05 - 10,000 ppm Li 0.2 - 10,000 ppm Lu 0.01 - 1,000 ppm Mg 0.002 - 15% Mn 2 - 10,000 ppm Mo 0.05 - 10,000 ppm
Sr 0.5 - 10,000 ppm Ta 0.05 - 10,000 ppm Tb 0.05 - 10,000 ppm Te 0.05 - 1,000 ppm Th 0.01 - 10,000 ppm
As 1 - 10,000 ppm Ba 1 - 10,000 ppm Be 0.05 - 2,500 ppm Bi 0.01 - 10,000 ppm
Ca 0.005 - 15%
Ti 0.001 - 15%
Cd 0.02 - 10,000 ppm Ce 0.05 - 1,000 ppm Co 0.1 - 10,000 ppm Cr 1 - 10,000 ppm Cs 0.05 - 1,000 ppm Cu 0.5 - 10,000 ppm
Na 0.005 - 15%
Tl 0.02 - 10,000 ppm U 0.05 - 10,000 ppm W 0.1 - 10,000 ppm Y 0.1 - 10,000 ppm V 2 - 10,000 ppm Yb 0.1 - 1,000 ppm Zn 1 - 10,000 ppm Zr 0.5 - 10,000 ppm
Nb 0.1 - 1,000 ppm
P 0.001 - 15%
Pb 0.5 - 10,000 ppm Ni 1 - 10,000 ppm Rb 0.1 - 10,000 ppm
Fe 0.01 - 15%
S 0.005 - 5%
Ga 0.05 - 1000 ppm Hf 0.02 - 500 ppm In 0.005 - 500 ppm
Sb 0.05 - 10,000 ppm Sc 0.1 - 10,000 ppm
Se 1 - 1,000 ppm
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