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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).
Manganese oxide nanorods were synthesized by hydrothermal method and immobilized on stainless steel wire by physical coating method to obtain the manganese oxide nanorods solid phase extraction (SPME) coating. The coating had better enrichment for acrylamide Ability and strong mechanical strength.Experimental conditions by optimizing the extraction time, extraction temperature, desorption temperature, desorption time and ionic strength affect the extraction efficiency of the experimental conditions, established by the SPME and gas chromatography - electron capture detector analysis , The detection of acrylamide in potato chips and biscuits was carried out.The results showed that the coating of manganese oxide nanorods had better extraction ability for acrylamide in the two samples with complex matrix, The contents of acrylamide in biscuits were 2.43 and 1.31 mg g ~ (-1), respectively.