Cleanert NANO was developed base on carbon nanotube material. After functionalized process, the nano material has better affinity to remove colorants and fatty acids. And the surface deactivation process could control the overadsorption within limited area, and ensure the recovery of pesticide with a benzene ring structure. The material which has a layer stacked structure could significantly increase the specific surface area and also the loading capacity.
These characteristics allow much less use of the material and improve specificity and selectivity. The amount of material used per sample is about only 1/10 to 1/5 when comparing to traditional PSA, C18 or GCB SPE material.
It could be widely used in the analysis of multiple-pesticide residues in fruit, vegetable and other agro-products. Small amount of the nano material about 10-15mg is enough for most of the sample matrix, and small sorbent bed make it could be packed as a filter format cartridge and show more benefit for fast analysis and small amount of sample analysis requirement.
Optimized sorbent was packed into a syringe filter format cartridge and make it could be operated with a simple two-Step operation, conditioning, loading sample and collect the eluent.
This kind of design make it could be easily compatible with an automated workstation for high throughput requirement.
Detection of 114 kinds of pesticide residue in black tea leaves sample using LC-MS/MS method
Sample Preparation Procedure
The recoveries for 114 kinds of pesticides are from 60 to 110%, and the RSD is lower than 10%.