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Determining the Levels of Volatile Organic Pollutants in Urban Air Using a Gas Chromatography-Mass Spectrometry Method

机译:气相色谱-质谱法测定城市空气中挥发性有机污染物的水平

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摘要

The paper presents the application of a method based on coupled gas chromatography-mass spectrometry, using an isotopically labelled internal standard for the quantitative analysis of benzene (B), toluene (T), ethyl benzene (E), and o-, m-, p-xylenes (X). Their atmospheric concentrations were determined based on short-term sampling, in different sites of Cluj-Napoca, a highly populated urban centre in N-W Romania, with numerous and diversified road vehicles with internal combustion engines. The method is relatively inexpensive and simple and shows good precision and linearity in the ranges of 7–60 μg/m3 (B), 13–90 μg/m3 (T), 7–50 μg/m3 (E), 10–70 μg/m3 (X-m,p), and 20–130 μg/m3 (X-o). The limits of quantitation/detection of the method LOQ/LOD are of 10/5 μg/m3 (Xo), 5/3 μg/m3 (B, E, X-m,p), and of 3/1 μg/m3 (T), respectively.
机译:本文介绍了一种基于偶合气相色谱-质谱联用的方法的应用,该方法使用同位素标记的内标对苯(B),甲苯(T),乙苯(E)和邻,间- ,对二甲苯(X)。根据短期采样,在罗马尼亚西北部一个人口稠密的城市中心克卢日-纳波卡的不同地点,确定了它们的大气浓度,其中有大量和多种配备内燃机的公路车辆。该方法相对便宜且简单,并且在7–60μg/ m 3 (B),13–90μg/ m 3 (( T),7–50μg/ m 3 (E),10–70μg/ m 3 (Xm,p)和20–130μg/ m 3 (Xo)。 LOQ / LOD方法的定量/检测限为10/5μg/ m 3 (Xo),5/3μg/ m 3 (B,E ,Xm,p)和3/1μg/ m 3 (T)。

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