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首页> 外文期刊>RSC Advances >Graphene oxide/β-cyclodextrin composite as fiber coating for high efficiency headspace solid phase microextraction of organophosphate ester flame retardants in environmental water
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Graphene oxide/β-cyclodextrin composite as fiber coating for high efficiency headspace solid phase microextraction of organophosphate ester flame retardants in environmental water

机译：氧化石墨烯/β-环糊精复合材料作为纤维涂料，用于环境水中有机磷酸酯阻燃剂的高效顶空固相微萃取

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A novel solid-phase microextraction fiber was prepared using graphene oxide/β-cyclodextrin (GO/β-CD) composite as a coating material immobilized on a stainless steel wire using sol–gel technique. The coating has large surface area with uniform porous structure, stable performance at high temperature, and good coating preparation reproducibility. The prepared GO/β-CD sol–gel stainless steel fiber used as a headspace solid phase microextraction (HS-SPME) fiber was evaluated by the determination of organophosphate ester flame retardants (OPFRs) in water samples coupled to a gas chromatographyitrogen phosphorus detector (GC/NPD). The studied OPFRs have a wide range of polarities and volatilities, and are not easily extracted by conventional commercial SPME fibers simultaneously. The prepared GO/β-CD SPME fiber showed good extraction performance for all the studied OPFRs. The developed HS-SPME-GC/NPD method provided low limits of detection ranging between 1.1 and 60.4 ng L?1. Good intra- and inter-day precision expressed as relative standard deviations for a single fiber were in the range of 2.2–9.6% and 2.7–9.7%, respectively, and fiber-to-fiber reproducibility was in the range of 6.3–10.9%. The calibration curves were linear in the concentration range from 10 to 50?000 ng L?1 (R > 0.9955). The developed method was applied for the analysis of tap, lake and river water samples and the relative recoveries were found to be in the range from 82.1 to 116.9%. Based on these features, the proposed fiber has great potential for widespread use as an effective and useful extraction tool.
机译：使用氧化石墨烯/β-环糊精（GO /β-CD）复​​合材料作为涂层材料，通过溶胶-凝胶技术固定在不锈钢丝上，制备了新型固相微萃取纤维。该涂料具有大的表面积和均匀的多孔结构，高温下性能稳定，涂料制备的重现性好。制备的GO /β-CD溶胶-凝胶不锈钢纤维用作顶空固相微萃取（HS-SPME）纤维，通过测定水样中的有机磷酸酯阻燃剂（OPFRs）和气相色谱/氮磷耦合剂进行评估检测器（GC / NPD）。所研究的OPFR具有广泛的极性和挥发性，并且不容易同时被常规的商用SPME纤维提取。制备的GO /β-CDSPME纤维对所有研究的OPFR均显示出良好的萃取性能。改进的HS-SPME-GC / NPD方法提供了1.1到60.4 ng L ？1 的低检测限。良好的日内和日间精度表示为单根纤维的相对标准偏差分别在2.2–9.6％和2.7–9.7％的范围内，并且纤维间再现性在6.3–10.9％的范围内。校准曲线在10到50？000 ng L ？1 的浓度范围内呈线性（ R

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