RESUMO
The composition of non-methane volatile organic compounds (hereafter VOCs) in i) the cover soil, at depths of 30, 50 and 70 cm, and ii) gas recovery wells from Case Passerini landfill site, (Florence, Italy) was determined by GC-MS. The study, based on the analysis of interstitial gases sampled along vertical profiles within the cover soil, was aimed to investigate the VOC behaviour as biogas transits from a reducing to a relatively more oxidizing environment. A total of 48 and 63 different VOCs were identified in the soil and well gases, respectively. Aromatics represent the dominant group (71.5% of total VOC) in soil gases, followed by alkanes (6.8%), ketones (5.7%), organic acids (5.2%), aldehydes (3.0%), esters (2.6%), halogenated compounds (2.1%) and terpenes (1.3%). Cyclics, heterocyclics, S-bearing compounds and phenols are Assuntos
Carbono/análise
, Poluentes do Solo/análise
, Solo
, Compostos Orgânicos Voláteis/análise
, Gerenciamento de Resíduos
, Carbono/metabolismo
, Radioisótopos de Carbono
, Recuperação e Remediação Ambiental
, Cromatografia Gasosa-Espectrometria de Massas
, Oxirredução
, Poluentes do Solo/química
, Poluentes do Solo/metabolismo
, Compostos Orgânicos Voláteis/química
, Compostos Orgânicos Voláteis/metabolismo