scholarly journals Macroporous Polymer Monoliths in Thin Layer Format

Polymers ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1059
Author(s):  
Evgenia Korzhikova-Vlakh ◽  
Mariia Antipchik ◽  
Tatiana Tennikova
Keyword(s):  
Thin Layer ◽  
High Performance ◽  
Solid Phase ◽  
Stationary Phases ◽  
Phase Extraction ◽  
Polymer Monoliths ◽  
Exchange Processes ◽  
Flow Through ◽  
Solid Phases ◽  
Layer Chromatography

Nowadays, macroporous polymer monoliths represent widely used stationary phases for a number of dynamic interphase mass exchange processes such as high-performance liquid chromatography, gas chromatography, electrochromatography, solid-phase extraction, and flow-through solid-state biocatalysis. This review represents the first summary in the field of current achievements on the preparation of macroporous polymer monolithic layers, as well as their application as solid phases for thin-layer chromatography and different kinds of microarray.

scholarly journals High-Performance Thin-Layer Chromatographic Analysis of Selected Organophosphorous Pesticide Residues in Tea

2008 ◽  
Vol 91 (5) ◽  
pp. 1210-1217 ◽  
Author(s):  
Yongde Yue ◽  
Rong Zhang ◽  
Wei Fan ◽  
Feng Tang
Keyword(s):  
Thin Layer ◽  
Pesticide Residues ◽  
Chromatographic Analysis ◽  
High Performance ◽  
Solid Phase ◽  
Relative Standard ◽  
Precision And Accuracy ◽  
Thin Layer Chromatographic Analysis ◽  
Layer Chromatography ◽  
Hptlc Method

Abstract The separation of 9 organophosphates (monocrotophos, quinalphos, triazophos, parathion-methyl, isofenphos-methyl, temephos, parathion, phoxim-ethyl, and chlorpyrifos) by high-performance thin-layer chromatography (HPTLC) with automated multiple development was studied. The HPTLC method was developed and validated for analysis of residues of phoxim-ethyl and chlorpyrifos in tea. The sample was extracted with acetonitrile and cleaned up by ENVI-CARB solid-phase extraction. The extract was directly applied as bands to glass-backed silica gel 60F254 HPTLC plates. The plates were developed with dichloromethanehexane (1 1, v/v) in a glass twin-trough chamber. Evaluation of the developed HPTLC plates was performed densitometrically. The results indicated that the detection limits of phoxim and chlorpyrifos were 5.0 109 and 1.0 108 g, respectively. Recoveries of the pesticides from tea by this analytical method were 90.7105.5%, and relative standard deviations were 7.313.5%. The precision and accuracy of the method were generally satisfactory for analysis of pesticide residues in tea.

Sign in / Sign up

Export Citation Format

Share Document