Byliński Hubert, Kolasińska Paulina, Dymerski Tomasz, Gębicki Jacek, Namieśnik Jacek
Department of Analytical Chemistry, Faculty of Chemistry, Gdansk University of Technology, Gdańsk, Poland.
Department of Chemical Engineering and Process, Faculty of Chemistry, Gdansk University of Technology, Gdańsk, Poland.
Monatsh Chem. 2017;148(9):1651-1659. doi: 10.1007/s00706-017-2023-8. Epub 2017 Jul 13.
Field olfactometry is one of the sensory techniques used to determine odour concentration, in atmospheric air, directly in emission sources. A two-dimensional gas chromatography with time of flight mass spectrometer (GC×GC-TOF-MS) allows performing the chemical characterization of various groups of chemical compounds, even in complex mixtures. Application of these techniques enabled determination of odour concentration level in atmospheric air in a vicinity of the oil refinery and the neighbouring wastewater treatment plant. The atmospheric air samples were analysed during a time period extending from February to June 2016. Based on the GC×GC-TOF-MS analysis and odour threshold values, the theoretical odour concentrations were calculated and compared with the odour concentrations determined by field olfactometry technique. The investigations revealed that higher values of odour concentration were obtained with the field olfactometry technique where odour analysis was based on holistic measurement. It was observed that the measurement site or meteorological conditions had significant influence on odour concentration level. The paper also discusses the fundamental analytical instruments utilized in the analysis of odorous compounds and their mixtures.
现场嗅觉测定法是用于直接在排放源处测定大气中气味浓度的感官技术之一。二维气相色谱-飞行时间质谱联用仪（GC×GC-TOF-MS）能够对各类化合物进行化学表征，即便在复杂混合物中也能做到。这些技术的应用使得测定炼油厂及邻近污水处理厂附近大气中的气味浓度水平成为可能。在2016年2月至6月这段时间内对大气空气样本进行了分析。基于GC×GC-TOF-MS分析和气味阈值，计算出理论气味浓度，并与通过现场嗅觉测定技术测定的气味浓度进行比较。调查显示，基于整体测量进行气味分析的现场嗅觉测定技术获得了更高的气味浓度值。观察到测量地点或气象条件对气味浓度水平有显著影响。本文还讨论了用于分析有气味化合物及其混合物的基本分析仪器。
