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首页> 外文期刊>CHROMATOGRAPHY >Quantitative Determination of Gaseous Alkanes Adsorbed on Filter Paper During PM2.5 Sampling
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Quantitative Determination of Gaseous Alkanes Adsorbed on Filter Paper During PM2.5 Sampling

机译：PM2.5采样过程中滤纸吸附的气态烷烃的定量测定

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Atmospheric gaseous alkanes adsorbed onto filter paper during sampling of particulate matter with a diameter less than 2.5 μm (PM2.5) were quantitatively evaluated. Air samples were collected using a high-volume air sampler equipped with a PM2.5 impactor. For the determination of gaseous alkanes adsorbed onto the filter paper, two filter papers were introduced into a air sampler. The PM and gaseous compounds were collected on the upstream filter. Part of the gaseous compounds passed through the upstream filter and were also adsorbed onto the downstream filter. The adsorbed alkanes were eluted using ultrasonication with dichloromethane, and subsequently determined using gas chromatography-mass spectrometry. In this study, the gaseous n -alkanes C_(13)-C_(30) were determined from the downstream filter, and the adsorption profiles of these gaseous alkanes varied with air sampling volumes. The adsorption and evaporation profiles of the alkanes were also investigated using deuterium alkanes.
机译：定量评估在颗粒物质的颗粒物质上吸附到滤纸上的大气气态烷烃。定量评价直径小于2.5μm的颗粒物质使用配备有PM2.5冲击器的大容量空气采样器收集空气样品。为了测定吸附在滤纸上的气态烷烃，将两个过滤纸引入空气采样器中。收集PM和气态化合物在上游过滤器上。通过上游过滤器的一部分气态化合物，并吸附到下游过滤器上。使用用二氯甲烷的超声溶解洗脱吸附的烷烃，随后使用气相色谱 - 质谱法测定。在该研究中，从下游过滤器测定气态 N-烷烃C_（13）-C_（30），并且这些气态烷烃的吸附曲线随空气采样体积而变化。还使用氘烷烃研究了烷烃的吸附和蒸发谱。

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