Monoterpene emission of a boreal Scots pine (Pinus sylvestris L.) forest

Räisänen, Tommi; Ryyppö, Aija; Kellomäki, Seppo

doi:10.1016/j.agrformet.2008.11.001

Cited by 67 publications

(56 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Even though 3-carene is one of the most dominant monoterpenes in European boreal forests its ion branching in PTR-ToF-MS has not been investigated [15,21,22]. Apart from the overall ratio difference, we observed similar branching ratio pattern for ions m/z 137, 95 and 81, but we have not observed the ion with m/z 67 [15].…”

Section: Resultssupporting

confidence: 58%

Selective reagent ion-time of flight-mass spectrometry study of six common monoterpenes

Materić

Lanza

Sulzer

et al. 2017

International Journal of Mass Spectrometry

View full text Add to dashboard Cite

a b s t r a c tOne of the most common volatile organic compounds (VOCs) group is monoterpenes. Monoterpenes share the molecular formula C 10 H 16 , they are usually cyclic and have a pleasant smell. The most common monoterpenes are limonene (present in citrus fruits) and ␣-pinene (present in conifers' resin). Different monoterpenes have different chemical, biological and ecological properties thus it is experimentally very important to be able to differentiate between them in real time. Real time instruments such as Proton Transfer Reaction-Time of Flight-Mass Spectrometry (PTR-ToF-MS), offer a real time solution for monoterpene measurement but at the cost of selectivity resulting in all monoterpenes being seen at the same m/z. In this work we used Selective Reagent Ion-Time of Flight-Mass Spectrometry (SRI/PTR-ToF-MS) in order to explore the differences in ion branching when different ionizations (H 3 O + , NO + and O 2 + ) and different drift tube reduced field energies (E/N) were used. We report a comprehensive ion library with many unique features, characteristic for individual monoterpenes.

show abstract

Section: Resultssupporting

confidence: 58%

Selective reagent ion-time of flight-mass spectrometry study of six common monoterpenes

Materić

Lanza

Sulzer

et al. 2017

International Journal of Mass Spectrometry

View full text Add to dashboard Cite

show abstract

“…Emitted monoterpenes from Scots pine mainly included α-pinene and 3 -carene, matching the field observations in the boreal Scots pine dominated forest (e.g. Räisänen et al, 2009;Manninen et al, 1998). No fractional contribution of 3 -carene in P1025 and P1026 were observed which depends on the 3 -carene genotype Scots pine (Manninen et al, 1998).…”

Section: Chemical Composition Of Living Plant Emissionsmentioning

confidence: 70%

Mass yields of secondary organic aerosols from the oxidation of α-pinene and real plant emissions

et al. 2011

View full text Add to dashboard Cite

Abstract. Biogenic volatile organic compounds (VOCs) are a significant source of global secondary organic aerosol (SOA); however, quantifying their aerosol forming potential remains a challenge. This study presents smog chamber laboratory work, focusing on SOA formation via oxidation of the emissions of two dominant tree species from boreal forest area, Scots pine (Pinus sylvestris L.) and Norway spruce (Picea abies), by hydroxyl radical (OH) and ozone (O 3 ). Oxidation of α-pinene was also studied as a reference system. Tetramethylethylene (TME) and 2-butanol were added to control OH and O 3 levels, thereby allowing SOA formation events to be categorized as resulting from either OHdominated or O 3 -initiated chemistry. SOA mass yields from α-pinene are consistent with previous studies while the yields from the real plant emissions are generally lower than that from α-pinene, varying from 1.9% at an aerosol mass loading of 0.69 µg m −3 to 17.7% at 26.0 µg m −3 . Mass yields from oxidation of real plant emissions are subject to the interactive effects of the molecular structures of plant emissions and their reaction chemistry with OH and O 3 , which Correspondence to: L. Q. Hao (hao.liqing@uef.fi) lead to variations in condensable product volatility. SOA formation can be reproduced with a two-product gas-phase partitioning absorption model in spite of differences in the source of oxidant species and product volatility in the real plant emission experiments. Condensable products from OH-dominated chemistry showed a higher volatility than those from O 3 -initiated systems during aerosol growth stage. Particulate phase products became less volatile via aging process which continued after input gas-phase oxidants had been completely consumed.

show abstract

“…8). Räisänen et al (2009) got a similar kind of ratio, 74 %, with the ecosystem scale emission potential of 290 ng m −2 s −1 measured in June-early September. The difference, 85 vs. 74 %, is rather small and within uncertainty estimates.…”

Section: Monoterpenes Their Emission Potentials and Differences To Bmentioning

confidence: 84%

“…As an example, even though branch scale monoterpene emissions from Scots pine are well-studied (Ruuskanen et al, 2005;Tarvainen et al, 2005;Hakola et al, 2006;Aalto et al, 2014Aalto et al, , 2015, ecosystem scale emissions from Scots pine dominated forests have been mainly explored in short campaigns (Rinne et al, 2000bGhirardo et al, 2010). Longer time series have also consisted of measurements from May to September only (Räisänen et al, 2009;Taipale et al, 2011). This has had a direct effect on the capability of models to predict monoterpene concentrations (Smolander et al, 2014).…”

mentioning

confidence: 99%

Annual cycle of volatile organic compound exchange between a boreal pine forest and the atmosphere

et al. 2015

View full text Add to dashboard Cite

Abstract. Long-term flux measurements of volatile organic compounds (VOC) over boreal forests are rare, although the forests are known to emit considerable amounts of VOCs into the atmosphere. Thus, we measured fluxes of several VOCs and oxygenated VOCs over a Scots-pine-dominated boreal forest semi-continuously between May 2010 and December 2013. The VOC profiles were obtained with a proton transfer reaction mass spectrometry, and the fluxes were calculated using vertical concentration profiles and the surface layer profile method connected to the Monin-Obukhov similarity theory. In total fluxes that differed significantly from zero on a monthly basis were observed for 13 out of 27 measured masses. Monoterpenes had the highest net emission in all seasons and statistically significant positive fluxes were detected from March until October. Other important compounds emitted were methanol, ethanol+formic acid, acetone and isoprene+methylbutenol. Oxygenated VOCs showed also deposition fluxes that were statistically different from zero. Isoprene+methylbutenol and monoterpene fluxes followed well the traditional isoprene algorithm and the hybrid algorithm, respectively. Emission potentials of monoterpenes were largest in late spring and autumn which was possibly driven by growth processes and decaying of soil litter, respectively. Conversely, largest emission potentials of isoprene+methylbutenol were found in July. Thus, we concluded that most of the emissions of m/z 69 at the site consisted of isoprene that originated from broadleaved trees.Methanol had deposition fluxes especially before sunrise. This can be connected to water films on surfaces. Based on this assumption, we were able to build an empirical algorithm for bi-directional methanol exchange that described both emission term and deposition term. Methanol emissions were highest in May and June and deposition level increased towards autumn, probably as a result of increasing relative humidity levels leading to predominance of deposition.

show abstract

Monoterpene emission of a boreal Scots pine (Pinus sylvestris L.) forest

Cited by 67 publications

References 45 publications

Selective reagent ion-time of flight-mass spectrometry study of six common monoterpenes

Selective reagent ion-time of flight-mass spectrometry study of six common monoterpenes

Mass yields of secondary organic aerosols from the oxidation of α-pinene and real plant emissions

Annual cycle of volatile organic compound exchange between a boreal pine forest and the atmosphere

Contact Info

Product

Resources

About