| Title: | Profiles of volatile organic compound emissions from soils amended with organic waste products |
| Author(s): | Abis L; Loubet B; Ciuraru R; Lafouge F; Dequiedt S; Houot S; Maron PA; Bourgeteau-Sadet S; |
| Address: | "Sorbonne Universite, UPMC, France; INRA, UMR ECOSYS, INRA, AgroParisTech, Universite Paris-Saclay, 78850 Thiverval-Grignon, France. Electronic address: letizia.abis@inra.fr. INRA, UMR ECOSYS, INRA, AgroParisTech, Universite Paris-Saclay, 78850 Thiverval-Grignon, France. INRA, UMR AgroEcologie, AgroSup Dijon, BP 87999, 21079 Dijon cedex, France" |
| DOI: | 10.1016/j.scitotenv.2018.04.232 |
| ISSN/ISBN: | 1879-1026 (Electronic) 0048-9697 (Linking) |
| Abstract: | "Volatile Organic Compounds (VOCs) are reactive compounds essential to atmospheric chemistry. They are mainly emitted by living organisms, and mostly by plants. Soil microbes also contribute to emissions of VOCs. However, these emissions have not yet been characterised in terms of quality and quantity. Furthermore, long-term organic matter amendments are known to affect the microbial content of soils, and hence the quantity and quality of VOC emissions. This study investigates which and how much of these VOCs are emitted from soil amended with organic waste products (OWPs). Four OWPs were investigated: municipal solid waste compost (MSW), green waste and sludge co-compost (GWS), bio-waste compost (BIOW) and farmyard manure (FYM). These OWPs have been amended every two years since 1998 until now at a rate of ~4?ª+tC?ª+ha(-1). A soil receiving no organic inputs was used as a reference (CN). VOCs emissions were measured under laboratory conditions using a Proton Transfer Reaction-Quadrupole ion guide Time of Flight-Mass Spectrometry (PTR-QiToF-MS). A laboratory system was set up made of two Pyrex chambers, one for samples and the second empty, to be used as a blank. Our results showed that total VOC emissions were higher in BIOW than in MSW. Further findings outlined that the most emitted compounds were acetone, butanone and acetaldehyde in all treatments, suggesting a common production mechanism for these compounds, meaning they were not affected by the OWP amendment. We isolated 21 VOCs that had statistically different emissions between the treatments and could therefore be considered as good markers of soil biological functioning. Our results suggest that organic matter and pH jointly influenced total VOC emissions. In conclusion, OWPs in soil affect the type of VOC emissions and the total flux also depends on the pH of the soil and the quantity of organic matter" |
| Keywords: | Air Pollutants/*analysis *Environmental Monitoring Refuse Disposal Soil/chemistry Soil Pollutants/analysis Volatile Organic Compounds/*analysis Waste Products/*analysis Organic waste products PTR-QiTOF-MS Soil Voc VOCs fluxes; |
| Notes: | "MedlineAbis, Letizia Loubet, Benjamin Ciuraru, Raluca Lafouge, Florence Dequiedt, Samuel Houot, Sabine Maron, Pierre Alain Bourgeteau-Sadet, Sophie eng Netherlands 2018/06/20 Sci Total Environ. 2018 Sep 15; 636:1333-1343. doi: 10.1016/j.scitotenv.2018.04.232. Epub 2018 May 4" |
