Impacts of springtime biomass burning in the northern Southeast Asia on marine organic aerosols over the Gulf of Tonkin, China

Li, Zheng; Yang, Xiaoyang; Lai, Shengli; Ren, Hong; Yue, Siyao; Zhang, Yingyi; Huang, Xin; Gao, Yuanguan; Shrivastava, Manish; Wang, Zifa; Fu, Pingqing

doi:10.1016/j.envpol.2018.01.089

Cited by 40 publications

(17 citation statements)

References 95 publications

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“…Many studies have used the measured abundance of levoglucosan relative to organic carbon aerosols (OC) to estimate the contribution of biomass burning to the ambient OC at a receptor site (eq ): where ([L]/[OC]) ambient is the abundance of levoglucosan relative to OC measured in an ambient air mass. ER levoglucosan,OC is the emission ratio of the two constituents from the biomass burning source. − For example, using eq the annual mean contribution of biomass burning to ambient OC was estimated to be 33% in Guangdong, China, reflecting the local use of crop residues as a residential energy source …”

Section: Introductionmentioning

confidence: 99%

Impacts of Chemical Degradation on the Global Budget of Atmospheric Levoglucosan and Its Use As a Biomass Burning Tracer

et al. 2021

Environ. Sci. Technol.

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Levoglucosan has been widely used to quantitatively assess biomass burning’s contribution to ambient aerosols, but previous such assessments have not accounted for levoglucosan’s degradation in the atmosphere. We develop the first global simulation of atmospheric levoglucosan, explicitly accounting for its chemical degradation, to evaluate the impacts on levoglucosan’s use in quantitative aerosol source apportionment. Levoglucosan is emitted into the atmosphere from the burning of plant matter in open fires (1.7 Tg yr–1) and as biofuels (2.1 Tg yr–1). Sinks of atmospheric levoglucosan include aqueous-phase oxidation (2.9 Tg yr–1), heterogeneous oxidation (0.16 Tg yr–1), gas-phase oxidation (1.4 × 10–4 Tg yr–1), and dry and wet deposition (0.27 and 0.43 Tg yr –1). The global atmospheric burden of levoglucosan is 19 Gg with a lifetime of 1.8 days. Observations show a sharp decline in levoglucosan’s concentrations and its relative abundance to organic carbon aerosol (OC) and particulate K+ from near-source to remote sites. We show that such features can only be reproduced when levoglucosan’s chemical degradation is included in the model. Using model results, we develop statistical parametrizations to account for the atmospheric degradation in levoglucosan measurements, improving their use for quantitative aerosol source apportionment.

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Section: Introductionmentioning

confidence: 99%

Impacts of Chemical Degradation on the Global Budget of Atmospheric Levoglucosan and Its Use As a Biomass Burning Tracer

et al. 2021

Environ. Sci. Technol.

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“…All of the adverse effects mentioned above are closely related to the molecular composition and abundance of atmospheric organic aerosols (Kanakidou et al, 2005). Although organic aerosols in urban and rural regions (Simoneit et al, 1991b;Yang et al, 2016;, in forests (Alves et al, 2001), on mountains (Fu et al, 2008), on islands (Zhu et al, 2015b;Zheng et al, 2018), in coastal areas (Feng et al, 2007;Kang et al, 2017), and over remote oceans (Fu et al, , 2013aDing et al, 2013) have been studied based on identification by gas chromatography-mass spectrometry (GC-MS), a comprehensive and profound understanding of OAs in fine aerosols is still limited due to inadequate data on air pollution in East Asia.…”

Section: Introductionmentioning

confidence: 99%

Large contributions of biogenic and anthropogenic sources to fine organic aerosols in Tianjin, North China

Fan

Liu

et al. 2020

Atmos. Chem. Phys.

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Abstract. In order to better understand the molecular composition and sources of organic aerosols in Tianjin, a coastal megacity in North China, ambient fine aerosol (PM2.5) samples were collected on a day/night basis from November to December 2016 and from May to June 2017. The organic molecular composition of PM2.5 components, including aliphatic lipids (n-alkanes, fatty acids, and fatty alcohols), sugar compounds, and photooxidation products from isoprene, monoterpene, β-caryophyllene, naphthalene, and toluene, was analysed using gas chromatography–mass spectrometry. Fatty acids, fatty alcohols, and saccharides were identified as the most abundant organic compound classes among all of the tracers detected in this study during both seasons. High concentrations of most organics at night in winter may be attributed to intensive residential activities such as house heating as well as the low nocturnal boundary layer height. Based on tracer methods, the contributions of the sum of primary and secondary organic carbon (POC and SOC respectively) to aerosol organic carbon (OC) were 24.8 % (daytime) and 27.6 % (night-time) in winter and 38.9 % (daytime) and 32.5 % (night-time) in summer. In detail, POC derived from fungal spores, plant debris, and biomass burning accounted for 2.78 %–31.6 % (12.4 %; please note that values displayed in parentheses in the following are average values) of OC during the daytime and 4.72 %–45.9 % (16.3 %) at night in winter, and 1.28 %–9.89 % (5.24 %) during the daytime and 2.08 %–47.2 % (10.6 %) at night in summer. Biomass-burning-derived OC was the predominant source of POC in this study, especially at night (16.0±6.88 % in winter and 9.62±8.73 % in summer). Biogenic SOC from isoprene, α-∕β-pinene, and β-caryophyllene exhibited obvious seasonal and diurnal patterns, contributing 2.23±1.27 % (2.30±1.35 % during the daytime and 2.18±1.19 % at night) and 8.60±4.02 % (8.98±3.67 % and 8.21±4.39 %) to OC in winter and summer respectively. Isoprene and α-∕β-pinene SOC were obviously elevated in summer, especially during the daytime, mainly due to strong photooxidation. Anthropogenic SOC from toluene and naphthalene oxidation showed higher contributions to OC in summer (21.0±18.5 %) than in winter (9.58±3.68 %). In summer, toluene SOC was the dominant contributor to aerosol OC, and biomass burning OC also accounted for a high contribution to OC, especially at night-time; this indicates that land/sea breezes also play an important role in the aerosol chemistry of the coastal city of Tianjin in North China.

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“…However, regarding the actions taken by residents of Comunidade do Caju-Úna and Povoado do Céu to minimize the impacts of waste left exposed in the environment, the most frequent are burning and burial (LOBATO et al, 2014). It is noteworthy that, although this attitude reflects the concern of the community with the issue, the actions adopted end up creating other problems because burning can release toxic particles into the atmosphere, altering air quality and affecting human health (ZHENG et al, 2018). Another potential risk is soil contamination by burial of waste, also with the risk of contamination and alteration of soil quality, and negative effects on human health (SANTUCCI et al, 2018).…”

Section: Perception About Solid Wastementioning

confidence: 99%

Environmental perception in traditional communities: a study in Soure Marine Extractive Reserve, Pará, Brazil

et al. 2020

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The Soure Marine Extractive Reserve, located in the Marajó Archipelago, was created to protect its biodiversity and guarantee the sustainability of its ecosystems. Despite of it, local environmental problems have increased. In this sense, this study aimed to quantify the level of environmental perception, in four categories, of communities settled within this conservation unit, based on a score classification (from 1 to 10). To this end, questionnaires were created with the structure of a 5-point Likert scale and applied to the participants. The results were quantified and revealed high scores (above 9) in the four categories analyzed, indicating a high level of perception. Perception was associated with age, schooling and number of people in the household. As a high level of perception was found, it is recommended that the awareness-raising actions carried out by the managing body of the reserve be maintained in order to preserve this knowledge.

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Impacts of springtime biomass burning in the northern Southeast Asia on marine organic aerosols over the Gulf of Tonkin, China

Cited by 40 publications

References 95 publications

Impacts of Chemical Degradation on the Global Budget of Atmospheric Levoglucosan and Its Use As a Biomass Burning Tracer

Impacts of Chemical Degradation on the Global Budget of Atmospheric Levoglucosan and Its Use As a Biomass Burning Tracer

Large contributions of biogenic and anthropogenic sources to fine organic aerosols in Tianjin, North China

Environmental perception in traditional communities: a study in Soure Marine Extractive Reserve, Pará, Brazil

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