Polypyrrole-Coated Capillary Coupled to HPLC for In-Tube Solid-Phase Microextraction and Analysis of Aromatic Compounds in Aqueous Samples

Wu, Jingcun; Pawliszyn, Janusz

doi:10.1021/ac000885x

Cited by 124 publications

(65 citation statements)

References 33 publications

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“…Intube SPME is suitable for automation, and automated sample handling procedures not only shorten the total analysis time but also usually provide better accuracy and precision relative to manual techniques. In-tube SPME technique has been applied to the determination of pesticides, environmental pollutants, drugs, and food contaminants by hyphenation with HPLC, LC-MS, ion chromatography, and capillary electrophoresis (CE) [54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78].…”

Section: Hiroyuki Kataokamentioning

confidence: 99%

Automated sample preparation using in-tube solid-phase microextraction and its application – a review

Kataoka

2002

Anal Bioanal Chem

271

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Sample preparation, such as extraction, concentration, and isolation of analytes, greatly influences their reliable and accurate analysis. In-tube solid-phase microextraction (SPME) is a new effective sample preparation technique using an open tubular fused-silica capillary column as an extraction device. Organic compounds in aqueous samples are directly extracted and concentrated into the stationary phase of capillary columns by repeated draw/eject cycles of sample solution, and they can be directly transferred to the liquid chromatographic column. In-tube SPME is an ideal sample preparation technique because it is fast to operate, easy to automate, solvent-free, and inexpensive. On-line in-tube SPME-performed continuous extraction, concentration, desorption, and injection using an autosampler, is usually used in combination with high performance liquid chromatography and liquid chromatography-mass spectrometry. This technique has successfully been applied to the determination of various compounds such as pesticides, drugs, environmental pollutants, and food contaminants. In this review, an overview of the development of in-tube SPME technique and its applications to environmental, clinical, forensic, and food analyses are described.

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Section: Hiroyuki Kataokamentioning

confidence: 99%

Automated sample preparation using in-tube solid-phase microextraction and its application – a review

Kataoka

2002

Anal Bioanal Chem

271

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“…Furthermore, the low thermal stability, generally bleeding at high temperature (> 250 °C) and solvent stability can lower the extraction and desorption process. Recently, some new types of fibers, such as non polar silica particles bonded with C 8 , C 18 [2], pencil lead [3], graphite [4], nafion perfluorinated resin [5], polypyrrole [6], anodized aluminum wire [7], and molecularly imprinted polymer-coated fiber [8] have been prepared. However, almost all of these fibers coated with polymer are generally prepared by mere physical deposition, high temperature epoxy immobilization or partial crosslink of the polymer coating on the surface of the fused-silica fibers.…”

Section: Introductionmentioning

confidence: 99%

Poly(dimethylsiloxane)-Poly(vinyl Alcohol) Coated Solid Phase Microextraction Fiber for Chlorpyrifos Analysis

Ibrahim¹,

Rasdy²,

Muhamad³

et al. 2016

MJAS

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Traditional liquid -liquid extraction of pesticides consumes large volumes of organic solvent which are hazardous to the operator and is not environment friendly. Solid phase microextraction (SPME) is a solvent less extraction method which is safer to the operator and is environmental friendly. A sol-gel hybrid fibre coating material, poly(dimethylsiloxane)-poly(vinyl alcohol) (PDMS-PVA) was synthesized and used in head space solid phase microextraction (HS-SPME) of chlorpyrifos. The thickness of the synthesised PDMS-PVA fiber coating was 13.5 μm and it is thermally stable up to 400 °C. The PDMS-PVA sol-gel hybrid fiber was also stable to two organic solvents tested; acetonitrile and dichloromethane (1 hour dipping) and showed no significant changes in extraction performance for chlorpyrifos. Extracted chlorpyrifos was analysed using gas chromatography electron capture detector (GC-ECD). Optimum SPME parameters affecting the PDMS-PVA HS-SPME performance namely extraction time (15 min), extraction temperature (50 °C), desorption time (5 min), desorption temperature (260 °C) and stirring rate (120 rpm) were used for extraction. It was found that HSSPME using PDMS-PVA sol-gel fiber gave significantly better extraction performance of chlorpyrifos compared to commercial 100 μm PDMS fiber. The PDMS-PVA fiber showed excellent operational performances such as temperature stability (up to 380 °C), coating lifetime (up to 170 times use) and organic solvent stability. The PDMS-PVA-HS-SPME method showed excellent recovery for chlorpyrifos from tomatoes (98.0 %, 5.9% RSD) at 0.01 μg/g spiked level (5 times lower than maximum residue limit set by European Union).Keywords: sol-gel hybrid, solid phase microextraction, chlorpyrifos, gas chromatography-electron capture detector Abstrak Pengekstrakan cecair -cecair tradisional bagi pestisid menggunakan isipadu pelarut organik yang banyak yang merbahaya kepada operator dan tidak mesra alam. Pengekstrakan mikro fasa pepejal (SPME) adalah teknik pengekstrakan tanpa pelarut yang lebih selamat kepada operator dan mesra alam. Bahan gentian tersalut hibrid sol-gel poli(dimetilsiloksana)-poli(vinil alkohol) (PDMS-PVA) telah disintesis dan digunakan untuk pengekstrakan mikro fasa pepejal ruang kepala (HS-SPME) klorpirifos. Ketebalan PDMS-PVA gentian tersalut yang telah disintesis ialah 13.5 µm dan stabil terma sehingga 400 °C. Gentian hibrid sol-gel PDMS-PVA juga stabil terhadap dua pelarut organik yang diuji, asetonitril dan diklorometana (1 jam celupan) dan tidak menunjukkan perbezaan ketara dalam prestasi pengekstrakan klorpirifos. Klopirifos yang telah diekstrak dianalisis menggunakan kromatografi gas-pengesan penangkapan elektron (GC-ECD). Parameter optimum SPME yang mempengaruhi prestasi PDMS-PVA-HS-SPME iaitu masa pengekstrakan (15 min), suhu pengekstrakan (50 °C), masa penyaherapan (5 min). suhu penyaherapan (260 °C) dan kadar putaran (120 rpm) telah digunakan untuk pengekstrakan. HS-SPME menggunakan gentian sol-gel PDMS-PVA menunjukkan prestasi pengekstrakan yang jauh lebi...

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“…When coupled with gas chromatography (GC) [2] or high-performance liquid chromatography (HPLC) [3], it is widely applied in many disciplines due to its fast, sensitive, and solventless properties. To date, it is used for the extraction of various volatile and semi-volatile organic compounds from environmental [4], pharmaceutical [5], biological [6], and food samples [7], since it combines sample clean-up and preconcentration into one step.…”

Section: Introductionmentioning

confidence: 99%

Polypyrrole/graphene composite‐coated fiber for the solid‐phase microextraction of phenols

Zou

Song

et al. 2011

J of Separation Science

114

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A polypyrrole (Ppy)/graphene (G) composite was developed and applied as a novel coating for use in solid-phase microextraction (SPME) coupled with gas chromatography (GC). The Ppy/G-coated fiber was prepared by electrochemically polymerizing pyrrole and G on a stainless-steel wire. The extraction efficiency of Ppy/G-coated fiber for five phenols was the highest compared with the fibers coated with either Ppy or Ppy/graphene oxide (GO) using the same method preparation. Significantly, compared with various commercial fibers, the extraction efficiency of Ppy/G-coated fiber is better than or comparable to 85 μm CAR/PDMS fiber (best extraction efficiency of phenol, o-cresol, and m-cresol in commercial fibers) and 85 μm polyacrylate (PA) fiber (best extraction efficiency of 2,4-dichlorophenol and p-bromophenol in commercial fibers). The effects of extraction and desorption parameters such as extraction time, stirring rate, and desorption temperature and time on the extraction/desorption efficiency were investigated and optimized. The calibration curves were linear from 10 to 1000 μg/L for o-cresol, m-cresol, p-bromophenol, and 2,4-dichlorophenol, and from 50 to 1000 μg/L for phenol. The detection limits were within the range 0.34-3.4 μg/L. The single fiber and fiber-to-fiber reproducibilities were <8.3 (n=7) and 13.3% (n=4), respectively. The recovery of the phenols spiked in natural water samples at 200 μg/L ranged from 74.1 to 103.9% and the relative standard deviations were <3.7%.

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Polypyrrole-Coated Capillary Coupled to HPLC for In-Tube Solid-Phase Microextraction and Analysis of Aromatic Compounds in Aqueous Samples

Cited by 124 publications

References 33 publications

Automated sample preparation using in-tube solid-phase microextraction and its application – a review

Automated sample preparation using in-tube solid-phase microextraction and its application – a review

Poly(dimethylsiloxane)-Poly(vinyl Alcohol) Coated Solid Phase Microextraction Fiber for Chlorpyrifos Analysis

Polypyrrole/graphene composite‐coated fiber for the solid‐phase microextraction of phenols

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