Journal Highlight: In situ synthesis of porous carbons by using room-temperature, atmospheric-pressure dielectric barrier discharge plasma as high-performance adsorbents for SPME

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  • Published: Oct 12, 2015
  • Author: separationsNOW
  • Channels: Sample Preparation
thumbnail image: Journal Highlight: In situ synthesis of porous carbons by using room-temperature, atmospheric-pressure dielectric barrier discharge plasma as high-performance adsorbents for SPME
A one-step, template-free method is described to synthesize porous carbons in situ on a metal surface at room temperature, for use as a fibre coating in SPME.

Journal Highlight: In situ synthesis of porous carbons by using room-temperature, atmospheric-pressure dielectric barrier discharge plasma as high-performance adsorbents for solid-phase microextraction

Chemistry - A European Journal, 2015, 21, 13618-13624
Yao Lin, Li Wu, Kailai Xu, Yunfei Tian, Xiandeng Hou and Chengbin Zheng

Abstract: A one-step, template-free method is described to synthesize porous carbons (PCs) in situ on a metal surface by using a room-temperature, atmospheric-pressure dielectric barrier discharge (DBD) plasma. This method not only features high efficiency, environmentally friendliness, and low cost and simple equipment, but also can conveniently realize large-area synthesis of PCs by only changing the design of the DBD reactor. The synthesized PCs have a regulated nestlike morphology, and thus, provide a high specific surface area and high pore volume, which result in excellent adsorption properties. Its applicability was demonstrated by using a PC-coated stainless-steel fiber as a solid-phase microextraction (SPME) fiber to preconcentrate polycyclic aromatic hydrocarbons (PAHs) prior to analysis by gas chromatography with flame ionization detection (GC-FID). The results showed that the fiber exhibited excellent enrichment factors (4.1×104 to 3.1×105) toward all tested PAHs. Thus, the PC-based SPME-GC-FID provides low limits of detection (2 to 20 ng L−1), good precision (<7.8 %), and good recoveries (80–115 %) for ultra-sensitive determination of PAHs in real water samples. In addition, the PC-coated fiber could be stable enough for more than 500 replicate extraction cycles.

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