采用水热法合成氧化锰纳米棒,并以物理涂渍的方法固定于不锈钢丝上,制备获得氧化锰纳米棒固相萃取(SPME)涂层.该涂层对丙烯酰胺具有较好的富集能力,且具有较强的机械强度.实验通过优化萃取时间、萃取温度、解吸温度、解吸时间以及离子强度等影响萃取效率的实验条件,建立了利用该SPME与气相色谱-电子捕获检测器分析法,进行了薯片和饼干中丙烯酰胺含量的检测.结果显示,氧化锰纳米棒纤维涂层对于上述两种具有复杂基质样品中的丙烯酰胺具有较好的萃取能力,实验测得的薯片和饼干中丙烯酰胺的含量分别为2.43和1.31 mg g~(-1).Novel manganese oxide nanorods were synthesized using hydro-thermal method and applied as a coating material for solid phase microextraction(SPME). The extraction efficiency of acrylamide using the coating was investigated. Extraction conditions including extraction time, extraction temperature, desorption temperature, desorption time and ionic strength in the SPME of acrylamide were optimized. Under the optimized conditions, the SPME-GC-ECD method was successfully applied in the determination of acrylamide in potato chip and cookies samples. The detection results reveal the excellent extraction ability towards acrylamide in the two complex matrix samples. The obtained contents of acrylamide for the selected samples were found to be 2.43 and 1.31 mg g~(-1).厦门市科技局高校创新项目(编号:3502Z20143025);; 福建省科技重大专项(编号:2011YZ0001-1)资助项
