Chromatographic determination of nitrophenols in aqueous media after two-stage preconcentration using an N-vinylpyrrolidone-based polymer

A water soluble fluorescent probe for selective and sensitive detection of picric acid – a nitroexplosive

“…Hence the detection of PA is crucial. 7 So far, various detection methods have been applied for sensing PA, which include chromatographic techniques, [8][9][10] ion mobility spectrometry, 11 mass spectrometry, 12 surface enhanced Raman spectroscopy, 13 capillary electrophoresis, 14 amperometry, 15 energy-dispersive X-ray analysis, 16 membrane electrode methods, electrochemistry analysis, 17,18 and so on. 19 No matter how, most of these techniques or methods are limited in their use on real samples as well as on-site testing due to a few drawbacks, like low sensitivity, requirement of sophisticated equipment, and sample pretreatment.…”

Naphthalimide‐Hydroxyquinoline Conjugates for Discriminative Detection of Nitro Aromatic Compounds in Aqueous Medium and Soil Sample

“…[17] Many trivial techniques such as chromatography, mass and surface enhanced Raman spectroscopies, electrochemical assay is available for the detection of NACs. [18][19] However, these techniques lack ease of operational use, sensitivity and selectivity, portability, fast visualization and response time, low cost of maintenance which makes fluorescence-based methods the most effective method for the detection of NACs. [20][21][22][23] In literature, Supramolecular self-assembly is being explored to design functional material for NACs because large surface-to-volume ratio and the effective π-π stacking between these molecules provides ordered molecular organization which enables long-range exciton migration and their quick annihilation by explosive quencher.…”

Protonation- and electrostatic-interaction-based fluorescence probes for the selective detection of picric acid (2,4,6-trinitrophenol) – an explosive material

“…In literature, fluorescence based molecular probes for the detection of NACs have been reviewed, but not even in a single case the focus has been on the selective recognition of picric acid [14][15] The conventional analytical methods such as chromatographic methods including gas chromatography 16 , liquid chromatography 17 , mass spectrometery 18 and electrochemical techniques 19 , Raman spectroscopy 20 are applied for the recognition of picric acid but these find limited use due to their low sensitivity, interference from other compounds and then require pre-treatment with sample, expensive and sophisticated equipment, lack of portability, hardship to operate them on-site etc. Numerous fluorescence based platforms involving small organic molecules, supramolecules 21 , metal complexes 22 , metal organic frameworks (MOF's) 23 , quantum dots/nanoclusters [24][25] , coordination polymers 26 etc.…”