Description
SCX SPE Cartridge: High-Performance Sorbent for Strong Cation Exchange
The SCX (strong cation exchange) solid-phase extraction (SPE) cartridge is a silica-based sorbent containing benzenesulfonic acid functional groups. The negatively charged sulfonic acid group provides strong cation exchange capacity, while the benzene ring offers moderate hydrophobic retention. This makes SCX particularly effective for extracting positively charged basic compounds such as amines, peptides, and proteins.
Key Features
- Lower pKa, allowing for efficient ion exchange at various pH levels
- Strong cation exchange combined with moderate hydrophobic retention
- Ideal for isolating positively charged molecules such as peptides, proteins, amino acids, and other charged species
- Binding capacity depends on factors like sample pH, ionic strength, and resin properties
- The charged state of the sulfonic acid group can be adjusted by modifying the pH value, facilitating elution of retained analytes
Applications
- Pharmaceutical and clinical analysis
- Detection of drug abuse compounds, such as amphetamine
- Analysis of drugs and their metabolites in biological samples
- Food safety and agricultural testing
- Identification of pesticide and antibiotic residues, including macrolides, in food samples
- Separation and analysis of amino acids and food additives in beverages and processed foods
- Proteomics and biochemical research
- Purification and concentration of proteins and peptides with cationic charges, aiding in proteomic studies and mass spectrometry analysis
- Environmental monitoring
- Extraction and preconcentration of cationic contaminants, including heavy metal ions, from water and soil samples
- Pharmaceutical sample preparation
- Isolation and purification of cationic drug compounds and metabolites for further pharmaceutical analysis
The SCX SPE cartridge provides highly selective retention for positively charged molecules, making it an essential tool in biomedical research, environmental analysis, food safety, and pharmaceutical applications.
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