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公开(公告)号:US06192766B1
公开(公告)日:2001-02-27
申请号:US09096531
申请日:1998-06-12
申请人: Peter Gårdhagen , Magnus Samuelsson , Arne Alm , Åke Jansson , Johan Arnell , Claes Andersson , Erik Johansson
发明人: Peter Gårdhagen , Magnus Samuelsson , Arne Alm , Åke Jansson , Johan Arnell , Claes Andersson , Erik Johansson
IPC分类号: G01N100
CPC分类号: G01N1/405 , F41H11/134 , G01N1/2214 , G01N1/2273 , G01N1/24 , G01N2001/022
摘要: An apparatus, a system and a method for the detection of an analyte in air comprising an air sampling system (1) comprising a mouthpiece (10) and a fan, a first enrichment stage (11) for enrichment of the analyte comprising a thermally regulated adsorption/desorption filter (20) creating a non-laminar gas flow for adsorption of the analyte, a heat source for heating the filter to evaporate the analyte, a second enrichment stage (30) for the further enrichment of the gaseous analyte comprising a cold trap (32) for condensing the analyte, extraction of the condensed material with a solvent, and collecting the solution, and analyzing the collected liquid sample with an analytical detection system, are disclosed. Further, an adsoption/desorption filter creating a non-laminar gas flow comprising a winding (21) of a resistance wire coated with an active material electric heating of the wire, is described. A specific application is detection of a gaseous component of explosives or mines, e.g. TNT, in air.
摘要翻译: 一种用于检测空气中的分析物的装置,系统和方法,包括:空气采样系统(1),包括接口(10)和风扇;第一富集级(11),用于富集所述分析物,所述第一富集级包括热调节 吸附/解吸过滤器(20)产生用于吸附分析物的非层流气流,用于加热过滤器以蒸发分析物的热源;用于进一步富集包含冷的气态分析物的第二富集阶段(30) (32),用于冷凝分析物,用溶剂萃取冷凝材料,收集溶液,并用分析检测系统分析收集的液体样品。 此外,描述了产生非层流气流的吸附/解吸过滤器,其包括涂覆有电线的活性材料电加热的电阻丝线的绕组(21)。 具体应用是检测爆炸物或矿井的气体组分,例如。 TNT,在空气中。