Study of the steam distillation of phenolic compounds using ultraviolet spectrometry

Norwitz, George; Nataro, Nicole; Keliher, Peter N.

doi:10.1021/ac00294a034

Cited by 65 publications

(22 citation statements)

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“…Several analytical methods have been developed for the measurement of 4‐NP such as UV‐visible spectrophotometry 10, spectrofluorimetry 11, high performance liquid chromatography 12, 13, and flow injection analysis 14. However, most of these methods require pretreatment; involve separation, extraction and adsorption 15, which is time consuming, and increase the overall analysis cost.…”

Section: Introductionmentioning

confidence: 99%

Porous Copper‐Modified Graphite Pencil Electrode for the Amperometric Detection of 4‐Nitrophenol

Kawde

Aziz

2014

Electroanalysis

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To overcome the well‐known carbon electrodes surface fouling of phenols, we report on a simple and rapid method for the preparation of a disposable porous Cu‐modified graphite pencil electrode (Cu‐GPE) for sensing 4‐nitrophenol (4‐NP). The bare‐ and Cu‐modified graphite pencil electrodes were characterized by cyclic voltammetry and SEM. The two electrodes displayed distinct electrocatalytic activities in response to the electrochemical redox reaction of 4‐NP. A difference of three orders of magnitude is obtained on the amperometric detection limits of 1.9 µM on porous Cu‐modified vs. 1.0 mM on bare‐graphite pencil electrode at 3σ. The Cu‐GPEs are fabricated utilizing a simple single method, and at an extremely low cost with high stability, selectivity and sensitivity, offering a promising tool for sensing 4‐NP.

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Section: Introductionmentioning

confidence: 99%

Porous Copper‐Modified Graphite Pencil Electrode for the Amperometric Detection of 4‐Nitrophenol

Kawde

Aziz

2014

Electroanalysis

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“…Accordingly, there are growing demands for field-deployable devices for reliable on-site monitoring of para-nitrophenol compounds. Common laboratory-based analytical methods for determining para-nitrophenol compounds such as primarily gas and liquid chromatography (HPLC) [9][10][11][12][13], UV-vis spectrophotometry [14,15] and spectrofluorimetry [16] have been reported. The use of enzyme-linked immunosorbent assay (ELISA) has been studied [17].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical determination of para-nitrophenol at apatite-modified carbon paste electrode: Application in river water samples

Mhammedi

Achak

Bakasse

et al. 2009

Journal of Hazardous Materials

164

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“…19 Thus, the analyses of phenolic derivatives, especially, nitro-substituted phenols in wastewaters have received considerable attention. 20,21 Various methods including HPLC, [22][23][24][25] solid-phase microextraction (SPME), 26 UV-Vis spectrophotometry [27][28][29] and spectrofluorimetry 30 have been reported. However, some sample pre-treatments involving separation, extraction and/or adsorption are generally necessary, and these have been time-consuming and complex.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Determination of Phenol and Mononitrophenol Isomers Using PLS Regression and Conventional and Derivative Spectrophotometry

et al. 2005

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Summary -The partial least squares regression method (PLS) was tested as a calibration procedure for the simultaneous determination of phenol, o-nitrophenol, m-nitrophenol and p-nitrophenol by both conventional and first derivative UV/Vis spectrophotometry. The experiments were conducted in the acidic, neutral and basic media. The results obtained by the application of the PLS procedure on the conventional and first derivative spectra in two solvent media were compared. It was found that the results obtained in the basic medium have better performance characteristics than those obtained in the acidic or neutral media. Comparable results were obtained in the case of both conventional and first derivative absorbance data. The proposed method was applied to the determination of the four phenol derivatives in natural spiked water samples at concentration levels between 1.0 and 10.0 µg ml -1 with average recoveries in the range 96% -99%.

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Study of the steam distillation of phenolic compounds using ultraviolet spectrometry

Cited by 65 publications

References 0 publications

Porous Copper‐Modified Graphite Pencil Electrode for the Amperometric Detection of 4‐Nitrophenol

Porous Copper‐Modified Graphite Pencil Electrode for the Amperometric Detection of 4‐Nitrophenol

Electrochemical determination of para-nitrophenol at apatite-modified carbon paste electrode: Application in river water samples

Simultaneous Determination of Phenol and Mononitrophenol Isomers Using PLS Regression and Conventional and Derivative Spectrophotometry

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