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A sensitive method using SPME pre-concentration for the quantification of aromatic amines in indoor air
Analytical and Bioanalytical Chemistry ( IF 3.8 ) Pub Date : 2018-01-20 , DOI: 10.1007/s00216-018-0862-8
Vincent Lucaire , Jean-Jacques Schwartz , Olivier Delhomme , Ruben Ocampo-Torres , Maurice Millet

Monitoring the levels of aliphatic and aromatic amines (AA) in indoor air is important to protect human health because of exposure to these compounds through diet and inhalation. A sampling and analytical method using XAD-2 cartridges and gas chromatography coupled to mass spectrometry used for assessing 25 AA in different smoking and non-smoking indoor environment was developed. After sampling and delivering 1 m3 of air (6–8 h sampling), an adsorbent was ultrasonically extracted with acetonitrile, concentrated to 1 mL and diluted in 25 mL of water (pH = 9; 5% NaCl), and then extracted for 40 min at 80 °C using a divinylbenzene/carboxen/polydimethylsiloxane (DVB/CAR/PDMS) fiber and injected in a GC/MS system. With this method, 22 of the 25 AA can be analyzed with detection limits up to five times lower than that of classic liquid injection. Benzylamine, 3-aminophenol, and 4-aminophenol were not detected with the solid-phase micro-extraction (SPME) method. It can be assumed that aminophenols required a derivatization step for their analysis by GC as these molecules were not detected regardless of the injection mode used.

Open image in new windowGraphical abstract
Graphical abstract

Analysis of aromatic amines in indoor air by SPME-GC/MS



中文翻译:

使用SPME预浓缩对室内空气中的芳香胺进行定量的灵敏方法

监测室内空气中脂肪族和芳香族胺(AA)的水平对于保护人类健康非常重要,因为通过饮食和吸入接触这些化合物会使其暴露。开发了一种使用XAD-2柱和气相色谱-质谱联用的采样和分析方法,用于评估不同吸烟和非吸烟室内环境中的25 AA。采样并交付后1 m 3空气(采样6-8小时)后,用乙腈超声提取吸附剂,浓缩至1 mL,并在25 mL水(pH = 9; 5%NaCl)中稀释,然后在80°C下使用二乙烯基苯/羧基/聚二甲基硅氧烷(DVB / CAR / PDMS)纤维,并注入GC / MS系统中。使用这种方法,可以分析25 AA中的22种,其检出限比传统液体注入法的检出限低五倍。固相微萃取(SPME)方法未检测到苄胺,3-氨基苯酚和4-氨基苯酚。可以假设氨基酚需要通过GC进行分析的衍生化步骤,因为无论使用哪种注入方式,都无法检测到这些分子。

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图形概要

用SPME-GC / MS分析室内空气中的芳香胺

更新日期:2018-01-20
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