Nanofiber-based enrichment device for sampling organic contaminants in vacuum environment  

真空环境下基于纳米纤维富集器的污染物采集(英文)

作　　者：晏嫣[1] 邓剑军[1] 邓思维[1] 王羽[1] 王丰[1] 肖梅[2] 康学军[1,3] 

机构地区：[1]东南大学儿童发展与学习科学教育部重点实验室,南京210096 [2]东南大学电子科学与工程学院,南京210096 [3]东南大学苏州研究院苏州环境与生物安全重点实验室,苏州215123

出　　处：《Journal of Southeast University(English Edition)》2012年第4期464-468,共5页东南大学学报（英文版）

基　　金：The National Basic Research Program of China(973 Program)(No.2012CB933302);the National Natural Science Foundation of China(No.81172720);the Science and Technology Pillar Program of Jiangsu Province(No.BE2010088);the Municipal Science and Technology Project of Suzhou City(No.SYN201006,SG201028);the Undergraduate Student Scientific Training Program of Southeast University(No.T12261005)

摘　　要：A novel method for sampling and enriching organic volatile contaminants in the vacuum environment combined with qualitative analysis based on the vacuum simulation test is proposed. A nanofiber is used as absorbent to collect the organic volatile contaminants in the vacuum environment and then eluted by methanol. The eluent is analyzed by gas chromatography （ GC ） and gas chromatography-mass spectrometry （GC/MS） to identify the composition of the organic contaminants. The nanofiber is composed of polystyrene and it is prepared by electrospinning. Before being used, the nanofiber is processed by ultrasound in ethanol for 15 min to remove some impurities and dried in an oven at 60 ℃, and then 10 mg of the nanofiber is wrapped in a thermoplastic polyester fabric pocket. The vacuum pump oil and di-iso-decyl phthalate （DIDP） are chosen as absorbates to test the absorbent performance of the nanofiber in the vacuum environment. Experiments are performed under the pressure of 10-4 and 103 Pa, respectively. It is shown that the nanofiber-based enrichment device can be used to adsorb the organic contaminants in the vacuum simulation environment.建立了在真空条件下检测有机污染物挥发组分的新方法.在模拟的真空环境中进行有机污染物的采样、富集.利用纳米纤维作为吸附剂采集真空中的有机污染物,并且用甲醇洗脱.甲醇洗脱液中的组分利用气相色谱(GC)和气质联用(GC-MS)进行检测.纳米纤维由静电纺丝法制成,其材料为聚苯乙烯.实验前,纳米纤维在乙醇溶液中超声15分钟以去除杂质,后将其移入60℃的烘箱烘干,最后将10mg处理好的纳米纤维装入热塑性聚酯布袋中制成富集器.选择真空泵油和邻苯二甲酸二异癸酯(DIDP)作为目标物测试吸附剂,在真空环境中研究其采集效果.实验分别在压力为10-4和103Pa的环境中进行.实验结果表明,基于纳米纤维的富集器在模拟的真空环境中对有机物具有采样和富集效果.

关 键 词：NANOFIBER sampling vacuum environment organic contaminants 

分 类 号：O659.1[理学—分析化学]