Direct determination of chlorophenols in water samples through ultrasound-assisted hollow fiber liquid–liquid–liquid microextraction on-line coupled with high-performance liquid chromatography

Chao, Yu-Ying; Tu, Yiming; Jian, Zhi-Xuan; Wang, Hsaio-Wen; Huang, Yeou‐Lih

doi:10.1016/j.chroma.2012.11.039

Cited by 71 publications

(34 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Other than our previous reports, no papers have described the problem or the extent of inner-fiber fluid leakage in HF-LPME systems. Second, we have demonstrated that ultrasonication is a universal technique that can improve the extraction kinetics for not only ionizable analytes (acidic phenols in our previous studies 10,11 ) but also neutral compounds (HPAEs in this present study). Third, we have demonstrated that heating cannot be used as a routine technique to improve the extraction kinetics for neutral analytes, for example, the HPAEs tested in this present study; this finding confirms the importance of ultrasonication on improving the extraction kinetics of neutral analytes when using HF-LPME.…”

Section: Journal Of Agricultural and Food Chemistrymentioning

confidence: 90%

Effects of Push/Pull Perfusion and Ultrasonication on the Extraction Efficiencies of Phthalate Esters in Sports Drink Samples Using On-line Hollow-Fiber Liquid-Phase Microextraction

Chao

Lee

Chien

et al. 2013

J. Agric. Food Chem.

Self Cite

View full text Add to dashboard Cite

In previous studies, we developed a process, on-line ultrasound-assisted push/pull perfusion hollow-fiber liquid-phase microextraction (UA-PPP-HF-LPME), combining the techniques of push/pull perfusion (PPP) and ultrasonication with hollow-fiber liquid-phase microextraction (HF-LPME), to achieve rapid extraction of acidic phenols from water samples. In this present study, we further evaluated three more-advanced and novel effects of PPP and ultrasonication on the extraction efficiencies of neutral high-molecular-weight phthalate esters (HPAEs) in sports drinks. First, we found that inner-fiber fluid leakage occurs only in push-only perfusion-based and pull-only perfusion-based HF-LPME, but not in the PPP mode. Second, we identified a significant negative interaction between ultrasonication and temperature. Third, we found that the extraction time of the newly proposed system could be shortened by more than 93%. From an investigation of the factors affecting UA-PPP-HF-LPME, we established optimal extraction conditions and achieved acceptable on-line enrichment factors of 92-146 for HPAEs with a sampling time of just 2 min.

show abstract

Section: Journal Of Agricultural and Food Chemistrymentioning

confidence: 90%

Effects of Push/Pull Perfusion and Ultrasonication on the Extraction Efficiencies of Phthalate Esters in Sports Drink Samples Using On-line Hollow-Fiber Liquid-Phase Microextraction

Chao

Lee

Chien

et al. 2013

J. Agric. Food Chem.

Self Cite

View full text Add to dashboard Cite

show abstract

“…HF-LPME uses a porous-walled polypropylene hollow fiber to stabilize and protect the organic phase, to enhance the mechanical robustness and the extraction efficiency [28,29]. There are considerable researches about driving force for the extraction of target analytes by HF-LPME [30][31][32][33]. This technique can provide a high analyte preconcentration and excellent sample cleanup, with the advantages that the fiber can be disposable after use because of its low price.…”

Section: Introductionmentioning

confidence: 98%

Hollow fiber supported ionic liquid membrane microextraction for preconcentration of kanamycin sulfate with electrochemiluminescence detection

Wang

Wei

et al. 2014

Journal of Electroanalytical Chemistry

View full text Add to dashboard Cite

“…Simultaneous determination of 14 chlorophenols (CPs) and chloroanisoles (CAs) in wine samples have been carried out using stir bar sorptive extraction (SBSE) followed by gas chromatography-mass spectrometry (GC-MS) [11]. Chlorophenols have been isolated from aquatic media and analyzed by high performance liquid chromatography with ultraviolet detection (HPLC-UV) [12][13][14]. However, none of these combinations can achieve the quantification limits required for direct determination of phenols in drinking water, resulting in a necessity for a preconcentration step.…”

Section: Introductionmentioning

confidence: 99%

Retention Profile and Selective Separation of Trace Concentrations of Phenols from Water onto Iron(III) Physically Loaded Polyurethane Foam Solid Sorbent: Kinetics and Thermodynamic Study

Ms¹,

Hamza²,

Alwael³

et al. 2014

J Chromatogr Sep Tech

View full text Add to dashboard Cite

Phenols are included in the list of potential toxins for motor neurons. Thus, fast and selective method for removal of phenols has been developed. The method was based upon the extraction of iron (III) phenolate complex anions [Fe(phenolate) 6 ] 3by tri-n-butylphosphine (TBP)-plasticized iron(III) immobilized polyurethane foam (PUF) from the test aqueous solution adjusted to pH≈1 followed by subsequent formation of ternary ion association complex of these species with the protonated urethane and/or ether linkages on the PUF solid phase extractor (SPE). The rate of removal of phenols from the aqueous solution by TBP plasticized iron (III) immobilized PUF were studied in batch conditions employing a series of kinetic models. Initially, phenols uptake onto plasticized iron (III) treated PUF was fast followed by kinetically pseudo-second order rate equation with an overall rate constant (k) of 0.014 and 0.018 g (mg min)-1 for phenol and 2-chlorophenol (2-CP), respectively. Endothermic nature of phenols sorption is governed by the positive value of ∆H where as the negative values of ∆G dictate that the uptake of the analyte onto the sorbent is spontaneous phenomena. The positive values of ΔS for both phenols may be indicative of moderate sorption step of the complex anion [Fe(C 6 H 5 O) 6 ] 3and ordering of ionic charges with a compensatory disordering of the sorbed species onto the sorbents. PUF sorbent provides efficient removal of phenols traces from various water samples.

show abstract

Direct determination of chlorophenols in water samples through ultrasound-assisted hollow fiber liquid–liquid–liquid microextraction on-line coupled with high-performance liquid chromatography

Cited by 71 publications

References 37 publications

Effects of Push/Pull Perfusion and Ultrasonication on the Extraction Efficiencies of Phthalate Esters in Sports Drink Samples Using On-line Hollow-Fiber Liquid-Phase Microextraction

Effects of Push/Pull Perfusion and Ultrasonication on the Extraction Efficiencies of Phthalate Esters in Sports Drink Samples Using On-line Hollow-Fiber Liquid-Phase Microextraction

Hollow fiber supported ionic liquid membrane microextraction for preconcentration of kanamycin sulfate with electrochemiluminescence detection

Retention Profile and Selective Separation of Trace Concentrations of Phenols from Water onto Iron(III) Physically Loaded Polyurethane Foam Solid Sorbent: Kinetics and Thermodynamic Study

Contact Info

Product

Resources

About