Environmental and human health impacts of volatile organic compounds: A perspective review

Chemosphere, Journal Year: 2022, Volume and Issue: 313, P. 137489 - 137489

Published: Dec. 10, 2022

Language: Английский

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The research hotspots and trends of volatile organic compound emissions from anthropogenic and natural sources: A systematic quantitative review

Environmental Research, Journal Year: 2022, Volume and Issue: 216, P. 114386 - 114386

Published: Sept. 24, 2022

Volatile organic compound (VOC) emissions have attracted wide attention due to their impacts on atmospheric quality and public health. However, most studies reviewed certain aspects of natural VOCs (NVOCs) or anthropogenic (AVOCs) rather than comprehensively quantifying the hotspots evolution trends AVOCs NVOCs. We combined bibliometric method with tree Markov chain identify research focus uncover in VOC emission sources. This study found that mainly focused characteristics, effects air health, under climate change. More concerned NVOCs, AVOC shifted a decreasing proportion transport an increasing share solvent utilization countries high publications (China USA). Research is imperative develop efficient economical abatement techniques specific sources BTEX species mitigate detrimental effects. NVOCs originating from human risen application medicine, while sensitive change grew slowly, including plants, biomass burning, microbes, soil oceans. long-term responses derived various warming warranted explore feedback global climate. It worthwhile establish inventory all kinds sources, accurate estimation, spatial temporal resolution capture synergy industrialization as well simulate quality. review both health point out directions for comprehensive control mitigation O3 pollution.

Language: Английский

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Occurrence and growth of sub-50 nm aerosol particles in the Amazonian boundary layer

Atmospheric chemistry and physics, Journal Year: 2022, Volume and Issue: 22(5), P. 3469 - 3492

Published: March 16, 2022

Abstract. New particle formation (NPF), referring to the nucleation of molecular clusters and their subsequent growth into cloud condensation nuclei (CCN) size range, is a globally significant climate-relevant source atmospheric aerosols. Classical NPF exhibiting continuous from few nanometers Aitken mode around 60–70 nm widely observed in planetary boundary layer (PBL) world but not central Amazonia. Here, classical events are rarely within PBL, instead, begins upper troposphere (UT), followed by downdraft injection sub-50 (CN<50) particles PBL growth. Central aspects our understanding these processes Amazon have remained enigmatic, however. Based on more than 6 years aerosol meteorological data Tall Tower Observatory (ATTO; February 2014 September 2020), we analyzed diurnal seasonal patterns as well conditions during 254 such Amazonian 217 event days, which show sudden occurrence between 10 50 CCN sizes. The was significantly higher wet season, with 88 % all January June, dry 12 July December, probably due differences sink (CS), load, conditions. Across events, median rate (GR) 5.2 h−1 CS 1.1 × 10−3 s−1 were observed. frequent daytime (74 %) showed GR (5.9 h−1) compared nighttime (4.0 h−1), emphasizing role photochemistry evolution About 70 negative anomaly equivalent potential temperature (Δθe′) – marker for downdrafts low satellite brightness (Tir) deep convective clouds good agreement UT course strong activity. 30 however, occurred absence convection, partly under clear-sky conditions, positive Δθe′ anomaly. Therefore, do appear be related transport suggest existence other currently unknown sources particles.

Language: Английский

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Dynamic environmental interactions shaped by vegetative plant volatiles

Natural Product Reports, Journal Year: 2023, Volume and Issue: 40(4), P. 840 - 865

Published: Jan. 1, 2023

Vegetative plant volatiles influence their environment, and vice versa . We review these dynamic interactions identify frameworks that can help to explain volatile emission patterns biological functions.

Language: Английский

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Carbon and Beyond: The Biogeochemistry of Climate in a Rapidly Changing Amazon

Frontiers in Forests and Global Change, Journal Year: 2021, Volume and Issue: 4

Published: March 11, 2021

The Amazon Basin is at the center of an intensifying discourse about deforestation, land-use, and global change. To date, climate research in has overwhelmingly focused on cycling storage carbon (C) its implications for climate. Missing, however, a more comprehensive consideration other significant biophysical feedbacks [i.e., CH 4 , N 2 O, black carbon, biogenic volatile organic compounds (BVOCs), aerosols, evapotranspiration, albedo] their dynamic responses to both localized (fire, land-use change, infrastructure development, storms) (warming, drying, some related El Niño or warming tropical Atlantic) changes. Here, we synthesize current understanding (1) sources fluxes all major forcing agents, (2) demonstrated expected impact local changes each agent, (3) nature, extent, drivers anthropogenic change Basin. We highlight large uncertainty flux magnitude responses, corresponding direct indirect effects regional system. Despite conclude that from non-CO agents (especially O) largely offsets—and most likely exceeds—the service provided by atmospheric CO uptake. also find majority impacts act increase radiative potential Given contribution less-recognized (e.g., Amazonian trees alone emit ~3.5% ), continuing focus single metric (i.e., C uptake storage) incompatible with genuine efforts understand manage biogeochemistry rapidly changing

Language: Английский

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Volatile organic compounds and their contribution to ground-level ozone formation in a tropical urban environment

Chemosphere, Journal Year: 2022, Volume and Issue: 302, P. 134852 - 134852

Published: May 6, 2022

Language: Английский

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An Overview of the Isoprenoid Emissions From Tropical Plant Species

Frontiers in Plant Science, Journal Year: 2022, Volume and Issue: 13

Published: May 20, 2022

Terrestrial vegetation is the largest contributor of isoprenoids (a group biogenic volatile organic compounds (BVOCs)) to atmosphere. BVOC emission data comes mostly from temperate regions, and less known about emissions tropical vegetation, even though it estimated be responsible for >70% emissions. This review summarizes available our current understanding isoprenoid plant species spatial temporal variation in emissions, which are strongly species-specific regionally variable. Emission models lacking foliar level need revise their parameters account seasonal diurnal due differences dependencies on temperature light plants other ecosystems. More experimental information determining how capacity varies during development warranted variations more explicitly.

Language: Английский

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Emission of volatile organic compounds from residential biomass burning and their rapid chemical transformations

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 903, P. 166592 - 166592

Published: Aug. 26, 2023

Biomass combustion releases a complex array of Volatile Organic Compounds (VOCs) that pose significant challenges to air quality and human health. Although biomass burning has been extensively studied at ecosystem levels, understanding the atmospheric transformation impact on emissions in urban environments remains challenging due sources materials. In this study, we investigate VOC emission rates chemical processing predominantly wood small centre Greece. Ioannina is situated valley within Dinaric Alps experiences intense pollution accumulation during winter its topography high activity. During event days, ambient mixing ratios key species were found be similar those reported for major centres worldwide. Positive matrix factorisation (PMF) analysis revealed was dominant source (>50 %), representing two thirds OH reactivity, which indicates highly reactive mixture. Calculated reactivity ranges from 5 s-1 an unprecedented 278 s-1, averages 93 ± 66 9 PM, indicating presence exceptionally VOCs. The pronounced photochemical formation organic acids coincided with ozone, highlighting significance secondary pollutants poorly ventilated areas. Our findings underscore pressing need transition environmentally friendly energy areas, order improve safeguard public

Language: Английский

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Process-evaluation of forest aerosol-cloud-climate feedback shows clear evidence from observations and large uncertainty in models

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Feb. 7, 2024

Abstract Natural aerosol feedbacks are expected to become more important in the future, as anthropogenic emissions decrease due air quality policy. One such feedback is initiated by increase biogenic volatile organic compound (BVOC) with higher temperatures, leading secondary (SOA) production and a cooling of surface via impacts on cloud radiative properties. Motivated considerable spread strength Earth System Models (ESMs), we here use two long-term observational datasets from boreal tropical forests, together satellite data, for process-based evaluation BVOC-aerosol-cloud four ESMs. The model shows that weakest modelled estimates can likely be excluded, but highlights compensating errors making it difficult draw conclusions strongest estimates. Overall, method evaluating along process chains promise pin-pointing sources uncertainty constraining feedbacks.

Language: Английский

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Aerosols from anthropogenic and biogenic sources and their interactions – modeling aerosol formation, optical properties, and impacts over the central Amazon basin

Atmospheric chemistry and physics, Journal Year: 2021, Volume and Issue: 21(9), P. 6755 - 6779

Published: May 5, 2021

Abstract. The Green Ocean Amazon experiment – GoAmazon 2014–2015 explored the interactions between natural biogenic forest emissions from central Amazonia and urban air pollution Manaus. Previous studies showed that nitrogen oxide (NOx = NO + NO2) sulfur (SOx) Manaus strongly interact with volatile organic compounds (BVOCs), affecting secondary aerosol (SOA) formation. In previous studies, ground-based aircraft measurements provided evidence of SOA formation strong changes in composition properties. Aerosol optical properties also evolve, their impacts on Amazonian ecosystem can be significant. As particles age, some processes, such as production, black carbon (BC) deposition, particle growth BC lensing effect change properties, solar radiation flux at surface. This study analyzes data models using Weather Research Forecasting Chemistry (WRF-Chem) model to assess spatial variability plumes atmosphere. following are investigated: single scattering albedo (SSA), asymmetry parameter (gaer), absorption Ångström exponent (AAE) (SAE). These simulations were validated three experimental sites, namely Tall Tower Observatory ATTO (T0a), downtown (T1), Tiwa Hotel (T2) Manacapuru (T3), well U.S. Department Energy (DOE) Gulfstream 1 (G-1) flights. WRF-Chem performed over 7 d during March 2014. Results show a mean (BSOA) mass enrichment 512 % T1 site, 450 regions downwind Manaus, T3 850 areas north site anthropogenic emissions. is rather fast, about 80 produced 3–4 h. Comparing plume without emissions, SSA shows reduction approximately 10 %, 11 6 T1, T2 respectively. Other regions, those further affected. gaer values increased 0.62 0.74 0.67 0.72 when active. During plume-aging process, tracking analysis an increase 0.91 close 0.98 160 km result production deposition.

Language: Английский

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