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SPE
Accessories CHROMABOND® QuEchERS
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QuEChERS method and pre-mixes
Within a few years after its devleopment by Anastassiades et al. the QuEChERS method has gained a leading position for determination of pesticide residues in food by GC-MS or LC-MS allowing rapid and cheap clean-up of strong matrix-contaminated samples.
Standard clean-up of food samples...
CHROMABOND® Alox A / Alox N / Alox B
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aluminium oxide, acidic, neutral, basic
aluminium oxide, high purity, pore volume 0.90ml/g, particle size 60 to 150µm, specific surface 150m²/g, acidic, pH 4 ± 0.5, recommended application: together with phase SA for PCB and pesticides.
Alox A: acidic, pH 4 ± 0.5
Alox N: neutral, pH 7 ± 0.5...
CHROMABOND® HR-P
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Polystyrene-divinylbenzene adsorbent resin for SPE
Basic material: Highly porous polystyrene-divinylbenzene copolymer specific surface 1200 m
2/g.
Particle size 50-100 µm very high binding capacity, up to 30 % of adsorbent weight.
Recommended application: aromatic compounds, phenols from water, nitroaromatics from water, pesticides from water, PAHs from oil...
CHROMABOND® C18 Hydra
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Octadecyl modified silica phase for SPE of polar analytes
Base material silica, pore size 60Å, particle size 45µm, specific surface 500m²/g, pH stability 2 to 8, special octadecyl phase for polar analytes, not endcapped, carbon content 15%.
Recommended applications: more polar compounds like pesticides and their polar degradation products, phenols, phenoxycarboxylic acids, nitroaromatics, pharmaceuticals....
CHROMABOND® C6H5
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Phenyl modified silica phase for SPE
Base material silica, pore size 60Å, particle size 45µm, specific surface 500m²/g, pH stability 2 to 8. Phenyl phase, carbon content 8%
polarity similar to C
8. In addition to hydrophobic interactions more selective adsorption is possible by Π-Π interactions due to the electron density of the phenyl ring....
CHROMABOND® C8
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Octyl modified silica phase for SPE, not endcapped
Base material silica, pore size 60Å, particle size 45µm, specific surface 500m²/g, pH stability 2 to 8. Octyl phase, not endcapped, carbon content 8%, similar to C
18, however slightly more polar. Secondary interactions with polar compounds are more pronounced due to shorter alkyl chains....
CHROMABOND® CN
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Cyanopropyl modified silica phase for SPE
Base material silica, pore size 60Å, particle size 45µm, specific surface 500m²/g, pH stability 2-8, cyanopropyl phase, carbon content 5.5%, polar to mid-polar. In addition to weak hydrophobic interactions selective interactions are possible due to the high electron density of the CN group....
CHROMABOND® CN/SiOH
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Combination phase for SPE analysis of PAH
Special combination phase, cyanopropyl phase for selective adsorption of polycyclic aromatics via Π-Π interactions, unmodified silica phase for removal of polar compounds.
Recommended applications: Extraction of the 16 PAHs according to EPA from soil samples....
CHROMABOND® Drug II
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Special silica phase for SPE of THC and derivatives acidic analytes from biological fluids (urine, blood ...)
base material silica, pore size 60Å, particle size 45µm, specific surface 500m²/g, pH stability 2 to 8, special bifunctional modification - C
8/ SB (strong anion exchanger - quaternary amine)....