In-line coupling headspace liquid-phase microextraction with capillary electrophoresis

Xie, Haiyang; Yang, He; Gan, Weiqun; Yu, Chang-Zhu; Han, Fang; Ling, Da-Si

doi:10.1016/j.chroma.2009.12.028

Cited by 27 publications

(13 citation statements)

References 38 publications

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“…The theoretical optimum ratio between the donor and HS volumes in HS extraction can be obtained by differentiating the equilibrium EF in Eq. with V d , which leads to V d = V h . In order to find the optimum volume of the donor for our study, we compared the peak heights of the analytes as the donor volume was changed from 0.5 to 1.2 mL with the extraction temperature and time fixed at 60°C and 30 min, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…In previous reports of HS‐SDME, highly alkaline acceptor phases were used . However, due to the pH range of 4–10 allowed for a μSIL‐FC‐coated capillary, we used the run buffer of pH 9.2 (without FC‐PN) for the acceptor drop, which also had the benefit of simplifying the overall process.…”

Section: Resultsmentioning

confidence: 99%

“…However, in‐line coupling of headspace‐single drop microextraction (HS‐SDME) and CE has seldom been carried out only with a manually controlled home‐made CE set up . Recently, Xie et al have demonstrated in‐line coupling of HS‐SDME and CE using a special cover unit for a sample vial with a home‐made CE system . In this report, we describe raising SDME and HS extraction to the next level by combining the two techniques, HS‐SDME in‐line coupled with CE using a commercial CE instrument.…”

Section: Introductionmentioning

confidence: 99%

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Headspace‐single drop microextraction with a commercial capillary electrophoresis instrument

et al. 2012

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Automated coupling of headspace-single drop microextraction (HS-SDME) and CE has been demonstrated using a commercial CE instrument. When a drop hanging at the inlet tip of a capillary for CE is used as the acceptor phase, HS-SDME becomes a simple but powerful sample pretreatment technique for CE before injection to facilitate sample cleanup and enrichment. By combining HS-SDME with an on-line sample preconcentration technique, large volume sample stacking using an electroosmotic flow pump, the sensitivity can be improved further. The overall enrichment factors for phenolic compounds were from 1900 to 3400. HS-SDME large volume sample stacking using an electroosmotic flow pump was successfully applied to a red wine sample to obtain an LOD of 4 nM (0.8 ppb) for 2,4,6-trichlorophenol which is a precursor for 2,4,6-trichloroanisole causing the foul odor in wine called cork taint.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Headspace‐single drop microextraction with a commercial capillary electrophoresis instrument

et al. 2012

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“…In this case, the hanging drop is not submerged into the sample solution, but suspended in the headspace of a vial containing the donor phase. This procedure has been applied to the determination of phenols in tap water samples . In this case, an alkaline aqueous drop in the tip of the capillary was suspended into the headspace of a vial containing the water sample.…”

Section: Online Microextraction Cementioning

confidence: 99%

Recent trends in capillary electrophoresis for complex samples analysis: A review

et al. 2017

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Recent trends in capillary electrophoresis for complex samples analysis: A reviewCE has been a continuously evolving analytical methodology since its first introduction in the 1980s of the last century. The development of new CE separation procedures, the coupling of these systems to more sensitive and versatile detection systems, and the advances in miniaturization technology have allowed the application of CE to the resolution of new and complex analytical problems, overcoming the traditional disadvantages associated with this method. In the present work, different recent trends in CE and their application to the determination of high complexity samples (as biological fluids, individual cells, etc.) will be reviewed: capillary modification by different types of coatings, microfluidic CE, and online microextraction CE. The main advantages and disadvantages of the different proposed approaches will be discussed with examples of most recent applications.

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“…Recently, in-line coupling of headspace liquid-phase microextraction with CE was reported for determining volatile species in liquid samples. 8 Although the method has an enrichment factor of several hundred, the procedures were complex and not easy to control. Especially cleaning excessive drops by the filter paper 8 increased contamination possibilities.…”

Section: Introductionmentioning

confidence: 99%

Direct Sampling in Air of Capillary Electrophoresis

Minematsu

2013

ANAL. SCI.

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In-line coupling headspace liquid-phase microextraction with capillary electrophoresis

Cited by 27 publications

References 38 publications

Headspace‐single drop microextraction with a commercial capillary electrophoresis instrument

Headspace‐single drop microextraction with a commercial capillary electrophoresis instrument

Recent trends in capillary electrophoresis for complex samples analysis: A review

Direct Sampling in Air of Capillary Electrophoresis

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