QuEChERS is a streamlined technique that makes it easier and cheaper for analytical chemists to examine the pesticide residues in agricultural products. It is exploited by many professors of the American Ministry of Agriculture in 2003, especially Anastassiades. This technique shares the same principle with high-performance liquid chromatography and solid-phase extraction. That is the interaction between the impurities in the sample and the adsorbent.
Basic steps:
The basic steps of QuEChERS can be included in several points.
1. Thoroughly grind the sample
2. Acetonitrile single solvent extraction and separation
3. Add salts to dehydrate, such as MgSO4
4. Add adsorbent to remove impurities
5. Detect by GC-MS、LC-MS
1. Thoroughly grind the sample
2. Acetonitrile single solvent extraction and separation
3. Add salts to dehydrate, such as MgSO4
4. Add adsorbent to remove impurities
5. Detect by GC-MS、LC-MS
Advantages:
1. High recovery
2. High accuracy and precision
3. Wide applicability
4. High efficiency with 6 samples in 30 minutes
5. Less solvent and less pollution
6. Easy to operate
1. High recovery
2. High accuracy and precision
3. Wide applicability
4. High efficiency with 6 samples in 30 minutes
5. Less solvent and less pollution
6. Easy to operate
Generally, QuEChERS is used for recovering pesticide residues from agricultural products, for example, fruits and vegetables. However, it got popularity in comprehensive isolation of analytes from different matrices. As time goes by, improvements and changes to the original technique are
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