Soil volatile analysis by proton transfer reaction-time of flight mass spectrometry (PTR-TOF-MS)

Mancuso, Stefano; Taiti, Cosimo; Bazihizina, Nadia; Costa, Corrado; Menesatti, Paolo; Giagnoni, Laura; Arenella, Mariarita; Nannipieri, Paolo; Renella, Giancarlo

doi:10.1016/j.apsoil.2014.10.018

Cited by 64 publications

(52 citation statements)

References 85 publications

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“…Samples were then equilibrated at 50°C in a water bath. The conditions of setup and incubation allowed the formation of a dynamic headspace sampling system with a constant air flow of 0.3 L min À1 and a constant humidity, which are critical parameters in for VOCs determination (Mancuso et al, 2015).…”

Section: Treatment Of Ptr-tof-ms Samplesmentioning

confidence: 99%

PTR-TOF-MS and HPLC analysis in the characterization of saffron (Crocus sativus L.) from Italy and Iran

et al. 2016

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Section: Treatment Of Ptr-tof-ms Samplesmentioning

confidence: 99%

PTR-TOF-MS and HPLC analysis in the characterization of saffron (Crocus sativus L.) from Italy and Iran

et al. 2016

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“…Soil can also be a sink for isoprenoids (Insam and Seewald, 2010;Peñuelas et al, 2014), as some decomposers will also use VOCs as a carbon source (Greenberg et al, 2012). Soil enzymes can release substrates for metabolic VOC production (Mancuso et al, 2015), but isoprenoids can also inhibit enzyme activity in boreal forest soil (Adamczyk et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Contribution of understorey vegetation and soil processes to boreal forest isoprenoid exchange

et al. 2017

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Abstract. Boreal forest floor emits biogenic volatile organic compounds (BVOCs) from the understorey vegetation and the heterogeneous soil matrix, where the interactions of soil organisms and soil chemistry are complex. Earlier studies have focused on determining the net exchange of VOCs from the forest floor. This study goes one step further, with the aim of separately determining whether the photosynthesized carbon allocation to soil affects the isoprenoid production by different soil organisms, i.e., decomposers, mycorrhizal fungi, and roots. In each treatment, photosynthesized carbon allocation through roots for decomposers and mycorrhizal fungi was controlled by either preventing root ingrowth (50 µm mesh size) or the ingrowth of roots and fungi (1 µm mesh) into the soil volume, which is called the trenching approach. Isoprenoid fluxes were measured using dynamic (steady-state flow-through) chambers from the different treatments. This study aimed to analyze how important the understorey vegetation is as a VOC sink. Finally, a statistical model was constructed based on prevailing temperature, seasonality, trenching treatments, understory vegetation cover, above canopy photosynthetically active radiation (PAR), soil water content, and soil temperature to estimate isoprenoid fluxes. The final model included parameters with a statistically significant effect on the isoprenoid fluxes. The results show that the boreal forest floor emits monoterpenes, sesquiterpenes, and isoprene. Monoterpenes were the most common group of emitted isoprenoids, and the average flux from the non-trenched forest floor was 23 µg m −2 h −1 . The results also show that different biological factors, including litterfall, carbon availability, biological activity in the soil, and physico-chemical processes, such as volatilization and absorption to the surfaces, are important at various times of the year. This study also discovered that understorey vegetation is a strong sink of monoterpenes. The statistical model, based on prevailing temperature, seasonality, vegetation effect, and the interaction of these parameters, explained 43 % of the monoterpene fluxes, and 34-46 % of individual α-pinene, camphene, β-pinene, and 3 -carene fluxes.

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“…Measurements were carried out following the procedure described in Taiti et al (2015). Given that chemical reactions are generally based on an equilibrium process, and being very sensitive to changes in terms of pressure, temperature, humidity (Mancuso et al, 2015), care was taken to maintain such parameters constant in time. VOCs were measured by direct injection of the head space mixture into the PTR-TOFMS drift tube via a hated (60 C) peek inlet tube with a flow rate of 100 sccm for 5 min.…”

Section: Sample Preparation and Vocs Analysis By Ptr-tofmsmentioning

confidence: 99%

Potential application of PTR-TOFMS for the detection of deoxynivalenol (DON) in durum wheat

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Soil volatile analysis by proton transfer reaction-time of flight mass spectrometry (PTR-TOF-MS)

Cited by 64 publications

References 85 publications

PTR-TOF-MS and HPLC analysis in the characterization of saffron (Crocus sativus L.) from Italy and Iran

PTR-TOF-MS and HPLC analysis in the characterization of saffron (Crocus sativus L.) from Italy and Iran

Contribution of understorey vegetation and soil processes to boreal forest isoprenoid exchange

Potential application of PTR-TOFMS for the detection of deoxynivalenol (DON) in durum wheat

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