Thin-layer chromatography of chlorinated cresols

Sattar, Mohammed; Paasiv́irta, Jaakko; Vesterinen, Raili; Knuutinen, Juha

doi:10.1016/s0021-9673(00)95195-1

Cited by 13 publications

(2 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Most of the currently used techniques require prior separation of the chemicals. At present, the most popular separation procedures for nitrophenol compounds include gas chromatography (GC) (1)(2)(3)(4)(5), thin-layer chromatography (TLC) (6,7), liquid chromatography (LC) (8)(9)(10)(11)(12)(13), high-performance liquid chromatography (HPLC) (14)(15)(16)(17)(18)(19)(20)(21)(22), and gas chromatography/mass spectrometry (GC/MS) (23). Water samples must be extracted and derivatized to enhance volatility and detectability with most GC and GC/MS methods (1,2,4,5,23).…”

Section: Discussionmentioning

confidence: 99%

Surface-enhanced resonance Raman spectroscopy as an ancillary high-performance liquid chromatography dectector for nitrophenol compounds

Ni¹,

Thomas²,

Cotton³

1989

Anal. Chem.

View full text Add to dashboard Cite

In this study, the potential application of surface-enhanced resonance Raman scattering (SERRS) spectroscopy as an off-line secondary detector for HPLC has been evaluated. Four nitrophenol compounds, 2-nitrophenol, 4-nitrophenol, 2,4-dinitrophenol, and 4,6-dinitrocresol were separated by isocratic reverse-phase high-performance liquid chromatography (RP-HPLC) and monitored with a conventional UV detector. Resonance Raman (RR) and SERRS spectroscopy were next used to provide the required specificity for distinguishing the nitrophenol compounds. The SERRS detection limit for both 2-nitrophenol and 4-nitrophenol was calculated to be 14 ppb and that for 2,4-dinitrophenol and 4,6-dinitrocresol was estimated to lie near the parts-per-billion level as well. This detection limit is 2-3 orders of magnitude lower than that obtained by RR spectroscopy.

show abstract

Section: Discussionmentioning

confidence: 99%

Surface-enhanced resonance Raman spectroscopy as an ancillary high-performance liquid chromatography dectector for nitrophenol compounds

Ni¹,

Thomas²,

Cotton³

1989

Anal. Chem.

View full text Add to dashboard Cite

show abstract

“…Phenols were separated with chloroform-methanol (98:2) and detected with diazotized orthanilic acid or with diazotized dianisidine (39a). A comparison of five different layers with 11 solvent systems indicated that silica gel with dichloromethane as solvent is best for separating chlorinated cresols (40). A related study was made with chlorophenols (41) and on chloroanisoles and veratroles with silica gel type 60 and RP-18 plates (4la).…”

Section: A Types Of Thin Layersmentioning

confidence: 99%