The utility model discloses a mass spectrometry analysis for enrichment of sampling device, including electric rods, electric heating rod installation hole in the thermal column electric rods, used for rapid heating column; a pressure ring and a filter, a pressure ring and a filter connected by welding together, and installed at both ends of the heat conducting column; insulation cover, thermal insulation cover in the outer column, insulation ring is sheathed on the outer circle to thermally insulating cover and heat isolation channel column; thermal insulation cover at both ends through the sealing ring and gasket insulation are respectively connected with the front end cover and the rear cover, to play the role of sealing and thermal insulation; thermal insulation cover is provided with a power supply electric heating rod the hole; the electric heating wire and heating wire frame, the electric heating wire is installed in the heating wire frame, electric wire frame is fixed on the front end cover. The utility model can satisfy the enrichment of volatile organic pollutants in gas samples, and rapidly enrich the samples that are enriched under the action of heating and hot carrier gas, so that the concentration of organic matters entering the mass spectrometry chamber can be greatly improved.
【技术实现步骤摘要】
一种用于质谱分析的富集进样装置
本技术涉及实验工具领域,具体涉及一种用于质谱分析的富集进样装置。
技术介绍
在质谱分析过程中,膜进样是提高挥发性有机物检测极限的技术之一。因为半透膜的选择透过性,空气中的氮气、氧气等无机物很难透过膜,而具有挥发性和半挥发性的有机物通过扩散、脱附等透过膜进入质谱电离区。然而,质谱室真空度的要求很高使膜面积一般较小,当用于浓度很低的挥发性以及半挥发性有机物进样时,膜的透过效率很低。因此,膜进样前有必要对痕量挥发性及半挥发性有机物进行富集再分离。低温吸附和热解析被广泛用于挥发性及半挥发性有机物的富集和分离,提高有机物的检测浓度。目前常用的低温吸附一般采用半导体制冷(最低温度-30℃),制冷剂(如液氮)制冷,制冷机低温制冷等。这些制冷方式使得富集装置体积较大、成本较高、维护困难,温度过低还可能存在大量结冰从而导致导线短路等风险。热解析装置对填充吸附剂(如活性炭、分子筛等)的管壁加热,并将热量传递给吸附剂使吸附的有机物脱附;为了增加脱附速率,有时还利用载气(如氮气、氦气等)对有机物进行吹扫。由于吸附剂内部有很多微小的孔洞,使其传热效果较低,远 ...
【技术保护点】
一种用于质谱分析的富集进样装置,包括导热柱、前端盖、后端盖、绝热垫片、绝热环及密封圈;其特征在于,还包括:电热棒,所述电热棒安装在导热柱的电热棒安装孔内,用于对导热柱快速加热;压环和滤网,所述压环和滤网通过焊接连接在一起,并安装在导热柱的两端;保温罩,所述保温罩在导热柱的外围,绝热环套在导热柱外圆上以隔开导热柱与保温罩;所述保温罩前后两端通过密封圈和绝热垫片分别连接前端盖和后端盖,以起到密封和绝热的作用;所述保温罩设置有电热棒电源引入孔;电热丝和电热丝架,所述电热丝安装在所述电热丝架上,电热丝架固定在前端盖内。
【技术特征摘要】
2016.11.22 CN 20161104593761.一种用于质谱分析的富集进样装置,包括导热柱、前端盖、后端盖、绝热垫片、绝热环及密封圈;其特征在于,还包括:电热棒,所述电热棒安装在导热柱的电热棒安装孔内,用于对导热柱快速加热;压环和滤网,所述压环和滤网通过焊接连接在一起,并安装在导热柱的两端;保温罩,所述保温罩在导热柱的外围,绝热环套在导热柱外圆上以隔开导热柱与保温罩;所述保温罩前后两端通过密封圈和绝热垫片分别连接前端盖和后端盖,以起到密封和绝热的作用;所述保温罩设置有电热棒电源引入孔;电热丝和电热丝架,所述电...
【专利技术属性】
技术研发人员:庞骏德,肖育,汪新舜,丁正知,郭锡岩,朱勇勇,
申请(专利权)人:上海裕达实业有限公司,
类型:新型
国别省市:上海,31
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