Department of Chemistry, Universitat de Girona, Campus Montilivi, Girona, Spain.
J Sep Sci. 2013 May;36(9-10):1621-8. doi: 10.1002/jssc.201300046.
This study describes the development of an analytical method based on active collection in a multisorbent Tenax TA/Carbograph 1TD tube, followed by thermal desorption and GC-MS for the determination of 16 volatile organic compounds in air samples. The analyzed compounds include ozone precursors and odor-causing compounds belonging to different chemical families (sulfur- and nitrogen-containing compounds, aldehydes, and terpenes). Two types of sorbents were tested and desorption conditions (temperature, time, and sampling, and desorption flow) were evaluated. External calibration was carried out using the multisorbent bed. Method detection limits in the range 0.2-2.0 μg m(-3) for 1 L samples were obtained. The method was applied for determining the target compounds in air samples from two different wastewater treatment plants. Most compounds were detected and toluene, limonene, and nonanal were found in particularly high concentrations with maximum values of 438, 233, and 382 μg m(-3), respectively.
本研究描述了一种基于多吸附剂 Tenax TA/Carbograph 1TD 管中活性采集的分析方法的开发，随后进行热解吸和 GC-MS 分析，以测定空气中 16 种挥发性有机化合物。分析的化合物包括臭氧前体和属于不同化学家族的气味化合物（含硫和含氮化合物、醛和萜烯）。测试了两种类型的吸附剂，并评估了解吸条件（温度、时间、采样和解吸流量）。使用多吸附剂床进行外部校准。对于 1 L 样品，方法检测限在 0.2-2.0 μg m(-3)范围内。该方法应用于测定来自两个不同污水处理厂的空气中目标化合物。大多数化合物都被检测到，其中甲苯、柠檬烯和壬醛的浓度特别高，最大值分别为 438、233 和 382 μg m(-3)。
