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.
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。