6 / 21
Page 46
N o v e m b e r 1 2 - 1 3 , 2 0 1 8 | R o m e , I t a l y
Joint Event on
OF EXCELLENCE
IN INTERNATIONAL
MEETINGS
alliedacademies.comYEARS
&
CHROMATOGRAPHY AND SEPARATION SCIENCE
World Congress on
SATELLITE AND SPACE MISSIONS
International Conference and Exhibition on
Chromatography 2018 & Satellite 2018
Journal of Chemical Technology and Applications
|
Volume 2
J Chem Tech App 2018, Volume 2
ONLINE SAMPLE PREPARATION METHOD FOR COMPLEX SAMPLE
ANALYSIS
Gongke Li
Sun Yat-sen University, China
S
ample pretreatment techniques have been regarded as the most important role of the whole analytical process. The online
sample pretreatment mode is a promising way with the advantages of the automation, improvement of sensitivity and reduc-
tion of manual error. In this work, sample preparation media, including metal-organic frameworks, microporous organic polymers,
graphene and molecularly imprinted polymers, were developed coupling to HPLC for online analysis of complicated samples.
A NH2-MIL-53(Al)-polymer monolithic column was prepared and applied to in-tube SPME for online analysis of estrogens in
urine. The enrichment factors were 180-304. A micro-solid-phase extraction (μ-SPE) column based on hydrazone linked covalent
organic polymer was developed for online analysis of sudan dyes in chilli powder and sausage. The enrichment factors were
305-757. Acylhydrazone bond gel μ-SPE monolithic column was developed and applied to online enrichment and analysis of
trace sulfonamides in weever and shrimp. The extraction capacity were 270-401 pmol. A monolithic column based on covalent
cross-linked polymer gels for online extraction and analysis of trace aflatoxins in food sample was developed. The enrichment
factors were 36-51. Acrylamide-modified graphene was applied to online μ-SPE for trace heterocyclic amines analysis in foods.
The enrichment factors were 78-166. A molecularly imprinted monolithic column was developed for the online analysis of trace
antimicrobials. The enrichment factors were 46-211. These online sample preparation methods were successfully applied to
complex sample analysis.