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【Hot Spots of Chemical Machinery and Equipment Network ] In the process of laboratory testing and analysis, sample pre-processing is the link that has a key impact on the test results.
Sample pretreatment technology can transform the sample into a state suitable for the next step of analysis and determination through various sample preparation methods, and improve the sensitivity and resolution of detection.
The quality of sample processing directly affects the size of the error in the analysis results.
In order to obtain more accurate detection results, researchers are also pursuing more reliable sample pre-processing methods.
Hot attention of Chemical Machinery Equipment NetworkChemical machinery and equipmentSample pretreatment technology can transform the sample into a state suitable for the next step of analysis and determination through various sample preparation methods, and improve the sensitivity and resolution of detection.
The quality of sample processing directly affects the size of the error in the analysis results.
In order to obtain more accurate detection results, researchers are also pursuing more reliable sample pre-processing methods.
Extraction is a common technique for sample pretreatment, which uses the difference in solubility to completely or partially separate the components of the mixture.
There are also many ways of extraction.
Depending on the adsorbent, there are mainly liquid phase extraction and solid phase extraction.
Solid phase extraction is a relatively new type of extraction method, which is based on the principle of liquid chromatography for separation.
On the basis of solid phase extraction, solid phase microextraction technology has also been developed.
Liquid-phase extraction includes traditional liquid-liquid extraction, new microwave liquid-phase extraction and other technologies.
Compared with solid phase microextraction, liquid phase microextraction technology has also been developed in liquid phase extraction, which integrates extraction and concentration.
There are also many ways of extraction.
Depending on the adsorbent, there are mainly liquid phase extraction and solid phase extraction.
Solid phase extraction is a relatively new type of extraction method, which is based on the principle of liquid chromatography for separation.
On the basis of solid phase extraction, solid phase microextraction technology has also been developed.
Liquid-phase extraction includes traditional liquid-liquid extraction, new microwave liquid-phase extraction and other technologies.
Compared with solid phase microextraction, liquid phase microextraction technology has also been developed in liquid phase extraction, which integrates extraction and concentration.
In biological research, extraction technology is a very important sample processing method.
However, how to better achieve extraction in the original taste detection of living organisms has always been a problem that researchers want to solve.
Solid-phase microextraction technology realizes in-situ analysis in vivo, but it still needs to be improved in terms of extraction speed and extraction capacity.
While liquid phase microextraction has made great breakthroughs in mass transfer rate and extraction capacity, but liquid phase extraction has limited development potential due to its physical and chemical properties.
However, how to better achieve extraction in the original taste detection of living organisms has always been a problem that researchers want to solve.
Solid-phase microextraction technology realizes in-situ analysis in vivo, but it still needs to be improved in terms of extraction speed and extraction capacity.
While liquid phase microextraction has made great breakthroughs in mass transfer rate and extraction capacity, but liquid phase extraction has limited development potential due to its physical and chemical properties.
Recently, the Yanbian University research team combined the advantages of solid-phase microextraction and liquid-phase microextraction technologies to develop liquid-phase nano-extraction technology, which is an original new extraction technology in my country.
Based on the size effect and interface effect of the nanometer confinement, combined with the precise synthesis technology of carbon nanofiber materials, the research team created a liquid-phase nano-extraction technology with carbon nanofiber multi-dimensional channels as the extraction support unit, thereby realizing the nanometerization of the liquid-liquid extraction technology.
development of.
Based on the size effect and interface effect of the nanometer confinement, combined with the precise synthesis technology of carbon nanofiber materials, the research team created a liquid-phase nano-extraction technology with carbon nanofiber multi-dimensional channels as the extraction support unit, thereby realizing the nanometerization of the liquid-liquid extraction technology.
development of.
The liquid-phase nano-extraction technology has the characteristics of high sensitivity, fast extraction speed, and diverse functions.
By simply and quickly changing the type of restricted solvent, it can realize the full analysis of polar, mid-polar and non-polar substances.
Based on the broad spectrum of limited solvents, the diversity of combinations and the ease of replacement, liquid nano extraction achieves rapid, high throughput and high enrichment, breaking the shackles of traditional microextraction technology in the field of in vivo analysis.
Moreover, liquid-phase nano-extraction has also created a new phase separation technology, opening up a new direction for miscible two-phase extraction.
By simply and quickly changing the type of restricted solvent, it can realize the full analysis of polar, mid-polar and non-polar substances.
Based on the broad spectrum of limited solvents, the diversity of combinations and the ease of replacement, liquid nano extraction achieves rapid, high throughput and high enrichment, breaking the shackles of traditional microextraction technology in the field of in vivo analysis.
Moreover, liquid-phase nano-extraction has also created a new phase separation technology, opening up a new direction for miscible two-phase extraction.
Liquid phase nano extraction technology has developed extraction devices including column type, umbrella type, membrane type and needle tip type, which can provide new technologies for the study of multi-molecular network effects in life activities.
Source: X-MOL
Original title: New technology for sample pretreatment of liquid-phase nano-extraction