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Melamine & Analogues (Cyanuric Acid)
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Matrix
Powdered infant milk
Analytes
Cyanuric Acid
SPE Cartridge
SiliaPrepX SAX
60 mg / 3 mL
SPE-P0010-03BB
Sample Pretreatment before Loading
Add 20 mL of Water to 1 g of powdered infant milk, vortex.
Take 1 mL and add 2 mL of Sodium Hydroxide (0.1 N).
Conditionning
3 mL of Methanol
Equilibration
3 mL of Water
Loading
Pretreated sample
Washing
3 mL of Water
3 mL of Methanol
Elution
3 mL of 5 % Acetic Acid in Methanol
Further Treatment
Evaporation under Nitrogen, reconstitution with Methanol / Acetonitrile (50:50) and quantification by LC/MS.
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SiliaPrepX Polymeric SPE Cartridges, TMA Chloride (SAX), 85 µm, 60 Å (SPE-P0010)
SiliaPrepX SAX is a polystyrene-divinylbenzene copolomer functionalized by a strong anion exchanger presenting a high selectivity for acids (pKa 2 - 8). It is highly stable in organic solvents.