Enhanced fluorescence detection of dansyl derivatives of phenolic compounds using a postcolumn photochemical reactor and application to chlorophenols in river water

Ruiter, C. De; Bohle, J. F.; Jong, Gerhardus J. de; Brinkman, U.A.Th.; Frei, R.W.

doi:10.1021/ac00158a013

Cited by 57 publications

(11 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In addition, CPs are generated during the chlorine treatment of drinking water [29]. Highperformance liquid chromatography (HPLC), one of the many analytical methods available for the determination of CPs in water, has been widely used for the separation and determination of CPs [30][31][32][33], and is often coupled with various detectors such as ultraviolet (UV) [31,34], fluorescence [35], electrochemical [36], and mass spectroscopy [37]. However, because of the relatively low concentrations of most CPs and the inherent complexity in environmental water samples, a preconcentration step usually becomes necessary, prior to their analysis.…”

Section: Introductionmentioning

confidence: 99%

Mixed hemimicelles solid-phase extraction based on cetyltrimethylammonium bromide-coated nano-magnets Fe3O4 for the determination of chlorophenols in environmental water samples coupled with liquid chromatography/spectrophotometry detection

Zhao

Shi

et al. 2008

Journal of Chromatography A

194

View full text Add to dashboard Cite

Mixed hemimicelles solid-phase extraction (SPE) based on cetyltrimethylammonium bromide (CTAB)-coated nano-magnets Fe 3 O 4 was investigated for the preconcentration of four chlorophenols (CPs) in environmental water samples prior to HPLC-spectrophotometry determination in this paper. By the rapid isolating (about 5 min) of Fe 3 O 4 nanoparticles (NPs) through placing a Nd-Fe-B strong magnet on the bottom of beaker, the time-consuming preconcentration process of loading large volume sample in conversional SPE method with a column can be avoided. The unique properties of Fe 3 O 4 NPs such as high surface area and strong magnetism were utilized adequately in the SPE process. This novel separation method produced a high preconcentration rate and factor. A comprehensive study of the adsorption conditions such as the Fe 3 O 4 NPs zeta-potential, CTAB added amounts, pH value, standing time and maximal extraction volume was also presented. Under optimized conditions, four analytes of 2-chlorophenol (2-CP), 2,4-dichlorophenol (2,4-DCP), 2,4,6-trichlorophenol (TCP) and pentachlorophenol (PCP) were quantitatively extracted. The method was then used to determine four CPs in five real environmental water samples. High concentration factors (700) were achieved for each of the analytes, with observed detection limits ranging between 0.11 and 0.15 g L −1 . The accuracy of method was evaluated by recovery measurements on spiked samples. Good recovery results (83-98%) with satisfactory relative standard deviation (RSD) were achieved. It is important to note that satisfactory preconcentration factors and extraction recoveries for the four CPs were obtained with only a little amount of Fe 3 O 4 NPs (0.1 g) and CTAB (60 mg). To the best of our knowledge, this was the first time a mixed hemimicelles SPE method based on Fe 3 O 4 NPs magnetic separation had been used for the pretreatment of environmental water samples.

show abstract

Section: Introductionmentioning

confidence: 99%

Mixed hemimicelles solid-phase extraction based on cetyltrimethylammonium bromide-coated nano-magnets Fe3O4 for the determination of chlorophenols in environmental water samples coupled with liquid chromatography/spectrophotometry detection

Zhao

Shi

et al. 2008

Journal of Chromatography A

194

View full text Add to dashboard Cite

show abstract

“…Over the past decades, high-performance liquid chromatography (HPLC) was one of the mainly used methods for the separation and determination of chlorophenols by many researchers [5][6][7]. Various detectors such as ultraviolet (UV) [8,9], fluorescence [10], electrochemical [11], and mass spectroscopy [12] were in conjunction with HPLC for the determination of CPs.…”

Section: Introductionmentioning

confidence: 99%

Direct determination of chlorophenols in environmental water samples by hollow fiber supported ionic liquid membrane extraction coupled with high-performance liquid chromatography

Peng

Liu

et al. 2007

Journal of Chromatography A

267

View full text Add to dashboard Cite

The 1-octyl-3-methylimidazolium hexafluorophosphate ([C 8 MIM][PF 6 ]) ionic liquid was immobilized in the pores of a polypropylene hollow fiber for hollow fiber-protected liquid-phase microextraction. Analytes including 4-chlorophenol (4-CP), 3-chorophenol (3-CP), 2,4-dichlorophenol (2,4-DCP) and 2,4,6-trichlorophenol (2,4,6-TCP) were extracted into this ionic liquid membrane, and back extracted into 10 L sodium hydroxide acceptor solution in the lumen of the hollow fiber. Then, the acceptor solution was withdrawn into the high-performance liquid chromatography (HPLC) microsyringe connected to the hollow fiber, and directly injected into the HPLC system for analysis. Some parameters that might affect the extraction efficiency were optimized, and low detection limits (0.5 g L −1 for 4-CP, 3-CP, DCP and 1.0 g L −1 for TCP) were obtained. Good repeatability was achieved because of the stability of the hollow fiber-supported ionic liquid membrane. The proposed procedure was applied for direct determination of the four chlorophenols in some real water samples including groundwater, river water, wastewater and tap water. All of the four chlorophenols in these water samples were under the limits of determination, and the recoveries were in the range of 70.0-95.7% at 5 g L −1 spiked level.

show abstract

“…Some methods recommend distillation and liquid/liquid extraction [13,14]. Many of the methods used to determine these compounds include a sample derivatization step [13,15,16]. Chlorophenols are usually determined by means of GC or HPLC.…”

Section: Introductionmentioning

confidence: 99%

Qualitative and quantitative determination of halogenated derivatives in wastewater from coking plant

Czaplicka¹

2003

J of Separation Science

View full text Add to dashboard Cite

Qualitative and quantitative determination of halogenated derivatives in wastewater from coking plant This paper describes a modification of the EPA 625 method for determination of chlorobenzenes and chlorophenols in wastewater containing pyridine bases. The method modification consists in introduction of an additional liquid/liquid extraction step for isolation, from the samples under investigation, of pyridine and quinoline bases, and also fractions consisting of benzene, its homologues, and its halogenated derivatives. The modified method has been used to determine the concentrations of chlorobenzenes and chlorophenols present in coking wastewater.

show abstract

Enhanced fluorescence detection of dansyl derivatives of phenolic compounds using a postcolumn photochemical reactor and application to chlorophenols in river water

Cited by 57 publications

References 17 publications

Mixed hemimicelles solid-phase extraction based on cetyltrimethylammonium bromide-coated nano-magnets Fe3O4 for the determination of chlorophenols in environmental water samples coupled with liquid chromatography/spectrophotometry detection

Mixed hemimicelles solid-phase extraction based on cetyltrimethylammonium bromide-coated nano-magnets Fe3O4 for the determination of chlorophenols in environmental water samples coupled with liquid chromatography/spectrophotometry detection

Direct determination of chlorophenols in environmental water samples by hollow fiber supported ionic liquid membrane extraction coupled with high-performance liquid chromatography

Qualitative and quantitative determination of halogenated derivatives in wastewater from coking plant

Contact Info

Product

Resources

About