DigiSEP Molecular Recognition Technology Gel

DigiSEP MRT Sample preparation and complex matrices represent two of the greatest challenges in atomic spectroscopy.

In the first case, if the samples are not prepared (digested and pre-treated prior to analysis for example), the data obtained can be meaningless. In the second case, if the matrices are composed of a complex mixture of salts, viscous acids and/or particulates, it maybe next to impossible to detect very low levels of metals.

SCP SCIENCE can now help the atomic spectroscopist with both of these problems. We have seen in the previous chapter by carfully
monitoring and controlling sample temperature, the dirested metal recoveries can be improved. However, the problem of complex matrices remains a real hurdle in the analysis of metals by atomic spectroscopy; independent of whether it is atomic absorption-graphite furnace
(GFAA), inductively coupled plasma – atomic emission or mass spectroscopy.

The solution to elemental analysis in complex matrices comes in the form of sample preparation using DigiSEP Cartridges. MRT (Molecular Recognition Technology) sorbents are ideal to retain selectively single elements or restricted groups of elements. These cartridges are particularly useful to isolate an element from a complex matrix or to remove interferences present as traces.

Some of the key applications of DigiSEP Cartridges are:
•
 Separation of difficult to analyse transition metals from high alkali matrices
•
 Separation of metal ions from acid digestion matrices
•
 Separation of metals to be separated from oil and other organic matrices
•
 Capture, collection and concentration of mercury
•
 Capture, collection and concentration of lead and other elements
•
 Extraction of radioactive elements for the nuclear fuel industry

Application guide –
Alkali and alkaline earth metals The AM and AE series allow selective removal of these interferences when present as traces or their
preconcentration prior to analysis.

SPECIFICATIONS      
Product Type
Target Analyte
Matrix
Range (pH)
Remarks
DigiSEP AM-01
Ca2+, Na+
Water
2.0 - 10.0
Water, EDTA, elutable
DigiSEP AM-02
Ca2+, Na+
Water
> 6.0
Acid elutable
DigiSEP AM-03
Na+, K+, Rb+, Ca2+, Sr2+, Ba2+ (Mg2+, Li+, weakly)
Water
2.0 - 10.0
Water, EDTA, elutable
DigiSEP AM-04
K+, Na+, Rb+, Ca 2+, Sr2+
Water
> 6.0
Acid elutable
DigiSEP AM-05
Li+
Water
> 6.0
Acid elutable
DigiSEP AM-06
Ba2+, Pb2+, Tl+, Sr2+, K+
Water
> 6.0
Acid elutable
DigiSEP AE-01
Ca2+, Mg2+, other +2 and +3 cations
Water
> 6.0
Acid elutable
DigiSEP AE-02
Ca2+
Water
> 6.0
Acid elutable
DigiSEP AE-03
All alkali and akaline earths except Li+, Mg2+, Ba2+
Water
2.0 - 10.0
Water, EDTA, elutable
DigiSEP AE-04
Sr2+, Ca2+, Ba2+, Na+, K+, Cs+
Water
2.0 - 10.0
Water, EDTA, elutable

ORDERING INFORMATION      
Product Type
Columns (each) 4.6 x 50 mm
Columns (each) 4.6 x 100 mm
Cartridge (5/pk)
Powder (10 g)
DigiSEP AM-01
010-750-095
010-751-095
010-720-095
010-790-095
DigiSEP AM-02
010-750-097
010-751-097
010-720-097
010-790-097
DigiSEP AM-03
010-750-099
010-751-099
010-720-099
010-790-099
DigiSEP AM-04
010-750-101
010-751-101
010-720-101
010-790-101
DigiSEP AM-05
010-750-103
010-751-103
010-720-103
010-790-103
DigiSEP AM-06
010-750-105
010-751-105
010-720-105
010-790-105
DigiSEP AE-01
010-750-107
010-751-107
010-720-107
010-790-107
DigiSEP AE-02
010-750-109
010-751-109
010-720-109
010-790-109
DigiSEP AE-03
010-750-111
010-751-111
010-720-111
010-790-111
DigiSEP AE-04
010-750-113
010-751-113
010-720-113
010-790-113