Odorous VOCs From Biosolids Detected By GC-MS/O

摘要

The aim of this study was to identify key odorous volatile organic compounds (VOCs) components of biosolids emissions. Biosolids samples from wastewater treatment plant were collected weekly and stored over a 56 days under ambient conditions. Emissions were collected onto Tenax TA sorbent tubes using a U.S. EPA flux hood. To identify key odorous VOCs, samples were analysed by three operators on a GC-MS/ODP system. Intensities of odours detected from ODP were classified on a scale of 1 to 4 and the character of the odorous VOCs were specified. Fifteen different odour characters were detected during the whole sampling time. Not every odorous VOC was identified on every sampling day. The most frequently detected odorous VOCswere No. 10 - musty, wet cloth, earthy, oily, urine; No 9 - sulfur, rotten cabbage, 12 - musty, wet cloth, earthy, oily; 11 herbaceous, chemical, roasted nut, earthy and 15 - pesticide, corn threads, earthy - musty.