500mg/6ml Gcb Spe Cartridges for Gc LC Sample Preparation in Environmental Analysis

Rule I:

The properties of solid phase packing in SPE cartridges should be match to target compounds.

Rule II:

Take the advantage of differences between analytes of interest and interferences

Rule III:

Consider nature of SPE sample matrices, characteristics of analytes and solubility of used solvents

Users can select RayCure SPE columns depending on properties of desired analytes and sample matrices as following selection guides.
 

Based on nature of SPE sample matrices

SPE sample matrices

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Raykol Group is a leading professional supplier focusing on R&D, design and manufacture for automated laboratory equipment and solutions in the laboratory automation systems market. And we provide pre-sales product selection guide and after-sales technical supports. RayKol's automted lab systems and products are applied to sample preparation process in the area of food safety, environmental science, agriculture, pharmaceuticals and life science.
With knowledgeable scientists and experienced engineers, our R&D team has developed a variety of innovative instruments and solutions dedicated to the modern analytical laboratories.We are committed to provide ONE stop analytical testing solutions corresponding to user requirements with quality and accuracy, but also contribute to human health together.

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HOW DOES SPE COLUMN WORK?

SPE is a conventional and efficient extraction technique, it uses the affinity of solutes dissolved or suspended in mobile phase for stationary phase to separate desired compounds from a mixture. And there are two solid phase extraction mechanisms to obtain target analytes from complex samples, to retain desired compounds in stationary phase or retain impurities in solid phase. Depending on the difference of two mechanisms, SPE procedures could be a bit various. 

When sample portion passes through SPE column, undesired impurities are discarded with mobile phase, target compounds are retained in stationary phase, then rinse stationary phase with eluents to collect target compounds. It is the most commonly used purification mechanism of solid phase extraction. 

In the opposite, to retain impurities in stationary phase, target compounds and few impurities are collected in mobile phase when sample portion passes through SPE column. Rinse the stationary phase which impurities is retained with solvents to obtain rest of retained target compounds. This mechanism is mostly used to eliminate fat-soluble impurities of ion analysis and analysis of multiple pesticides in fruits and vegetables.