Non-thermal plasma technique can be a method to improve indoor air quality. In particular in cuisines, odorous emissions can be removed by non-thermal plasmas. In this study 2-methylthiophene, 2-methylpyrazine, 2-acetylthiazole, nonanal and trans-2-nonenal were used as target compounds in concentrations in the low ppmv range. These odorous compounds are emitted during cooking and frying processes. The oxidation of these target compounds as multi-component mixture in a non-thermal gas-phase plasma was studied in dry mixtures of argon and oxygen and in humid air. Complete oxidation of the odorous compounds to CO_X was achieved in both atmospheres. The energy efficiency was higher in the dry mixture of argon and oxygen, whereas the selectivity of the oxidation towards carbon dioxide was significantly higher in humid air. The main products of plasma treatment were identified as CO, CO₂ and polymeric deposits. Some minor organic intermediates in the pptv range were also identified. Although odor carriers could be completely degraded and the concentrations of potentially harmful organic byproducts were several orders of magnitude below critical values, high ozone and CO emissions during plasma operation are critical for indoor application of non-thermal plasma as stand-alone technique. The combination with a catalytic step, either as in-plasma or post-plasma catalysis, might be a promising approach to tackle this problem.

非热等离子体技术可以是改善室内空气质量的一种方法。尤其是在美食中，非热等离子体可以消除臭味。在这项研究中，将2-甲基噻吩，2-甲基吡嗪，2-乙酰基噻唑，壬醛和反-2-壬烯用作低ppmv范围内的目标化合物。这些臭味化合物在烹饪和煎炸过程中散发出去。在氩气和氧气的干燥混合物以及潮湿的空气中，研究了这些目标化合物在非热气相等离子体中作为多组分混合物的氧化。将有味化合物完全氧化为CO _X是在两种气氛下都能实现的。在氩气和氧气的干燥混合物中，能量效率更高，而在潮湿空气中，对二氧化碳的氧化选择性则更高。等离子体处理的主要产品被确定为CO，CO ₂和聚合物沉积物。还确定了pptv范围内的一些次要有机中间体。尽管气味载体可能会完全降解，潜在有害有机副产物的浓度比临界值低几个数量级，但等离子运行期间的高臭氧和一氧化碳排放量对于非热等离子体在室内的独立应用至关重要。与等离子催化或等离子后催化相结合的催化步骤可能是解决该问题的一种有前途的方法。