Pöhle H, Kliche R
Institut für Tierhygiene und Offentliches Veterinärwesen, Veterinärmedizinische Fakultät, Universität Leipzig.
Zentralbl Hyg Umweltmed. 1996 Nov;199(1):38-50.
Results of qualitative and quantitative detection of odour substances during the process of composting of biowaste are shown. Olfactometric measurements were carried out beside detection of odour substances by gaschromatography--mass spectroscopy. Some odour relevant substances were set in relation to odorant concentration. 158 volatile substances could be identified by GC/MS. The occurrence of odour substances demonstrated a characteristic dynamic. As a consequence of analysis of odour substances, detection of odorant concentration and odour quality the composting process could be divided in 3 main phases. For the start phase substances from anaerobic degradation like alcoholes and esters of carbonic acids played an important role in odour generation. Sulfur containing compounds dominated the characteristic odour during thermophilic phase of composting process. The importance of ammonia during later composting process could be shown. The concentration of dimethyl disulfide and limonene was set in relation to odorant concentration and both substances are discussed as indicator compounds.
展示了生物垃圾堆肥过程中气味物质的定性和定量检测结果。在通过气相色谱 - 质谱法检测气味物质的同时进行了嗅觉测量。一些与气味相关的物质与气味浓度相关联。通过GC/MS可鉴定出158种挥发性物质。气味物质的出现呈现出一种特征性动态。由于对气味物质、气味浓度检测和气味质量的分析，堆肥过程可分为3个主要阶段。在起始阶段，厌氧降解产生的物质如醇类和碳酸酯类在气味产生中起重要作用。含硫化合物在堆肥过程的嗜热阶段主导了特征气味。氨在后期堆肥过程中的重要性得以显现。二甲基二硫醚和柠檬烯的浓度与气味浓度相关联，这两种物质被作为指示性化合物进行讨论。
