C8/SAX Octyl/Strong Anion Exchange

Extracting acidic drugs in biological fluids

C8/SAX is composed of silica gel bounded with Octyl and quaternary ammonium groups at a specific ratio.It’s a mixed-mode sorbent with two retention mechanisms: octyl groups provide moderately hydrophobic interactions,quaternary ammonium groups provide strong anion exchange.
C8/SAX will be a better choice if very strong adsorption in C18, C8 or SAX packing results in difficult elution of some analytes.

– Moderate retention, avoiding extremely strong adsorption of some compounds
–  Ideal for complicated samples such as blood and urine

Specifications

1.urface area: 480 m² /g
2.Particle size: 40 – 75 µm
3.Pore size: 70 Å

Applications

– Determination of drugs and their metabolites
– In biological fluids, such as barbiturates
– Determination of drugs of abuse such as THC

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C8/SCX Octyl/Strong Cation Exchange

Extracting basic drugs in biological fluids

C8/SCX is composed of silica gel bounded with octyl and phenylsulfonic acid groups at a specific ratio. It’s a mixed-mode sorbent with two retention mechanisms: octyl groups provide moderately hydrophobic interactions, phenylsulfonic acid groups provide strong cation exchange. 

C8/SCX will be a better choice if very strong adsorption in C18, C8 or SCX packing results in difficult elution of some analytes.

– Moderate retention, avoiding extremely strong adsorption of some compounds
– Ideal for complicated samples such as blood and urine

Specifications

1.urface area: 480 m² /g
2.Particle size: 40 – 75 µm
3.Pore size: 70 Ås

Applications

– Determination of drugs and their metabolites in biological fluids.
– Determination of drugs of abuse such as cocaine,acetylcodeine, morphine and ketamine.

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GCB/NH₂ Graphitized Carbon Black /Aminopropyl  Bilayer

Cleanup of samples in multiresidual pesticide analysis

Carbon-GCB/NH₂ combines the merits of both Carbon-GCB and NH₂ sorbents and is able to remove interfering compositions such as pigments, sterols and fatty acids in food samples, making it an effective packing for cleaning samples up in multiresidual pesticide analysis.

– Ultrathin frits between two sorbent layers promising uniform flow
– Capable of removing interferences as thoroughly as possible

Applications

– Analysis of multiresidual pesticides in foods.

Specifications for GCB

1.Surface area: 100 m² /g
2.Particle size:100-300 mesh

Specifications for NH₂

1.Carbon content: 4.5%       2.Surface area: 480 m² /g
3.Particle size: 40-75 µm       4.Pore size: 70 Å

Related Methods

– NY/T 1379-2007 Multi-residue Determination of 334 Pesticides in Vegetable by GC/MS and LC/MS

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GCB/PSA Graphitized Carbon Black/ Primary-Secondary Amine Bilayer

Cleanup of samples in multiresidual pesticide analysis

Carbon- GCB/PSA is a sorbent similar to Carbon- GCB/NH₂ and suitable for cleaning samples up in multiresidual pesticide analysis.

Due to its additional secondary amino groups, PSA has higher ion exchange capability and ability to chelate some metal ions, thus providing Carbon-GCB/PSA with unique selectivity different from Carbon-GCB/NH .

– Ultrathin frits between two sorbent layers promising uniform flow
– Capable of removing interferences as thoroughly as possible
– Higher capabilities than Carb- GCB/NH 2

Specifications for GCB

1.Surface area: 100 m² /g
2.Particle size:100-300 mesh

Specifications for PSA

1.Carbon content: 8%       2.Surface area: 480 m ²/g|
3.Particle size: 50 – 75 µm       4.Pore size: 70 Å

Applications

– Analysis of multiresidual pesticides in foods
– Determination of residual neonicotinoid pesticides in soil, fruit and wine samples

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