Introduction to Solid Phase Extraction Technology
Solid phase extraction technology and its application
Solid-Phase Extraction (SPE) is a sample pretreatment technology developed in recent years. It is synthesized by liquid-solid extraction and column liquid chromatography. It is mainly used for sample separation, purification and concentration. Conventional liquid-liquid extraction can avoid many problems, such as easy emulsification, incomplete phase separation, lower quantitative analytical recovery, expensive fragile glassware and large amounts of organic waste. Solid phase extraction can effectively separate the target analyte from the interference component, which can improve the purity and recovery rate of the target analyte, reduce the relative deviation, improve the reproducibility, and facilitate more accurate qualitative and quantitative analysis of the target analyte. . Solid phase extraction technology can conveniently process multiple samples at the same time, greatly reducing the workload and operation time of sample pretreatment, effectively improving work efficiency, and having the characteristics of simple operation, accuracy, time saving, labor saving and environmental protection. In recent years, a large number of national and industry standards for the application of solid phase extraction technology have been promulgated, widely used in food safety testing, agricultural product residue monitoring, medical and health, environmental protection, commodity inspection, chemical production and other fields. Hawach offers you a wide range of chemistries, adsorbent types and sizes, and it is important to choose the right product for your needs and sample properties.
Ｔhe basic principles
Using the technology of the digital pump, each small column joint can independently provide a relatively constant negative pressure, allowing various solutions to pass through the small column at the flow rate required by the standard analytical procedure, ensuring efficient extraction of the target analyte, and finally converting the column to elution. On the rack, the positive pressure is eluted at a constant pressure to avoid cross-contamination.