A dispersive solid phase extraction adsorbent based on aptamer modified chitosan nanofibers for zearalenone separation in corn, wheat, and beer samples

2020 ◽  
Vol 12 (48) ◽  
pp. 5852-5860
Author(s):  
Luying Liu ◽  
Yanxia Ma ◽  
Xiaoting Zhang ◽  
Xixiang Yang ◽  
Xiaogang Hu

Highly selective separation of trace bio-toxins in food samples has long been a hot topic pursued by analytical chemists.

2017 ◽  
Vol 2017 ◽  
pp. 1-16 ◽  
Author(s):  
Gabriela Islas ◽  
Israel S. Ibarra ◽  
Prisciliano Hernandez ◽  
Jose M. Miranda ◽  
Alberto Cepeda

To achieve analytical success, it is necessary to develop thorough clean-up procedures to extract analytes from the matrix. Dispersive solid phase extraction (DSPE) has been used as a pretreatment technique for the analysis of several compounds. This technique is based on the dispersion of a solid sorbent in liquid samples in the extraction isolation and clean-up of different analytes from complex matrices. DSPE has found a wide range of applications in several fields, and it is considered to be a selective, robust, and versatile technique. The applications of dispersive techniques in the analysis of veterinary drugs in different matrices involve magnetic sorbents, molecularly imprinted polymers, carbon-based nanomaterials, and the Quick, Easy, Cheap, Effective, Rugged, and Safe (QuEChERS) method. Techniques based on DSPE permit minimization of additional steps such as precipitation, centrifugation, and filtration, which decreases the manipulation of the sample. In this review, we describe the main procedures used for synthesis, characterization, and application of this pretreatment technique and how it has been applied to food analysis.


2015 ◽  
Vol 8 (8) ◽  
pp. 1979-1989 ◽  
Author(s):  
Malihe Davudabadi Farahani ◽  
Farzaneh Shemirani ◽  
Negin Fasih Ramandi ◽  
Maysam Gharehbaghi

2018 ◽  
Vol 10 (10) ◽  
pp. 1151-1162 ◽  
Author(s):  
He-Li Cheng ◽  
Feng-Lian Wang ◽  
Yong-Gang Zhao ◽  
Yun Zhang ◽  
Mi-Cong Jin ◽  
...  

A novel double layer pipette tip magnetic dispersive solid phase extraction based on polyamidoamine-functionalized magnetic carbon nanotubes was developed for the purification of fifteen toxic alkaloids in cooked food samples.


2018 ◽  
Vol 10 (18) ◽  
pp. 2081-2087 ◽  
Author(s):  
S. Akbarzade ◽  
M. Chamsaz ◽  
G. H. Rounaghi

A simple dispersive solid-phase extraction method coupled with atomic absorption spectrometry detection was developed for selective separation of ultra-trace of lead ion using graphene oxide modified such as the pseudo imprinted polymer sorbent in real samples.


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