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首页> 外文期刊>Journal of the Korean Society for Applied Biological Chemistry >Graphene Nanoplatelets as a Solid Phase Extraction Sorbent for Analysis of Chlorophenols in Water
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Graphene Nanoplatelets as a Solid Phase Extraction Sorbent for Analysis of Chlorophenols in Water

机译：石墨烯纳米片作为固相萃取剂分析水中的氯酚

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摘要

Graphene nanoplatelets are a novel class of carbon nanostructures. They possess an ultra high surface area, and thus have great potentials for the use as sorbent materials. We herein demonstrate the use of graphene nanoplatelets as an adsorbent material for solid-phase extraction. Surface compositions of graphene nanoplatelets were examined by X-ray photoelectron spectroscopy. Scanning electron and transmission electron microscopies were performed to elucidate the morphology of graphene nanoplatelets. Three chlorophenols, 3-chlorophenol, 4-chlorophenol, and 2,4-dichlorophenols were selected as model analytes and extracted on a graphene nanoplatelets-packed solid-phase extraction cartridge, followed by elution with alkaline methanol. The extracted chlorophenols were identified and quantified by UV-vis spectrophotometer. Under the optimized experimental conditions, good linearity (R-2>0.9969), recovery (95-103%), precision (<12%), and accuracy (<+/- 9%) were achieved. The advantages of graphene nanoplatelets as solid phase extraction adsorbent, such as good reusability and no impact of sorbent drying, have been detailed. The present study proposes a useful method for water sample pretreatment and reveals the potential of graphene nanoplatelets as an excellent sorbent material in analytical processes.
机译：石墨烯纳米片是一类新的碳纳米结构。它们具有超高的表面积，因此具有用作吸附剂材料的巨大潜力。我们在本文中证明了使用石墨烯纳米片作为固相萃取的吸附材料。石墨烯纳米片的表面组成通过X射线光电子能谱检查。进行扫描电子和透射电子显微镜检查以阐明石墨烯纳米片的形态。选择三种氯酚，3-氯酚，4-氯酚和2,4-二氯酚作为模型分析物，并在装有石墨烯纳米片的固相萃取柱上萃取，然后用碱性甲醇洗脱。通过紫外可见分光光度计对提取的氯酚进行鉴定和定量。在优化的实验条件下，获得了良好的线性（R-2> 0.9969），回收率（95-103％），精度（<12％）和精度（<+/- 9％）。已经详细描述了石墨烯纳米片作为固相萃取吸附剂的优势，例如良好的可重复使用性和吸附剂干燥的影响。本研究提出了一种用于水样品预处理的有用方法，并揭示了石墨烯纳米片作为分析过程中优异的吸附材料的潜力。

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