High-resolution and -precision spectra of acetonitrile at the ν5-band for laser remote sensing

Guan, H. R.; Wang, Xiaoyu; Han, Ruifeng; Yuan, Liming; Meng, Shuo; Wang, Shuanke; Du, Zhenhui

doi:10.1016/j.jqsrt.2020.107254

Cited by 8 publications

(2 citation statements)

References 23 publications

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“…Acetonitrile (CH 3 CN) has been employed as the preferred tracer for biomass burning in more than 170 publications given its low background level and relatively long lifetime. However, studies have shown that besides biomass burning, industrial emission (Guan et al., 2020), vehicle emission (Inomata et al., 2013; Jobson et al., 2010; Valach et al., 2014), and coal‐burning (Cai et al., 2019) can also contribute to CH 3 CN levels in the atmosphere. These sources may not contribute significantly to the global budget of CH 3 CN (de Gouw et al., 2003; Holzinger et al., 2001), but their contributions to local CH 3 CN can bring large uncertainty when using mixing ratio threshold to evaluate the influences of biomass burning.…”

Section: Introductionmentioning

confidence: 99%

Revisiting Acetonitrile as Tracer of Biomass Burning in Anthropogenic‐Influenced Environments

Huangfu

Yuan

Wang

et al. 2021

Geophysical Research Letters

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On a global scale, biomass burning has been recognized as the primary source of fine carbonaceous particles and the second-largest source for total trace gases (Akagi et al., 2011;Stockwell et al., 2015;Yokelson et al., 2013). Pollutants emitted during the burning process can contribute significantly to local and regional air pollution (Chen et al., 2017;Crilley et al., 2015;Languille et al., 2020). The reactive species emitted participate in the reactions in the atmosphere producing secondary pollutants, such as secondary organic aerosols and ozone (O 3 ), which can amplify the impact of primary pollutants (Alvarado et al., 2015;Gilman et al., 2015;Yokelson et al., 2013). Recognizing and quantifying the amount of biomass burning emissions can help to understand the local source attribution and greatly enhance the accuracy of air quality forecasting in the downwind areas (

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Section: Introductionmentioning

confidence: 99%

Revisiting Acetonitrile as Tracer of Biomass Burning in Anthropogenic‐Influenced Environments

Huangfu

Yuan

Wang

et al. 2021

Geophysical Research Letters

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“…However, studies have highlighted that acetonitrile signals from BB can be convoluted by local vehicular emissions 450 (Guan et al, 2020;Swarthout et al, 2013), coal-burning Valach et al, 2014;Inomata et al, 2013) and industrial emissions including oil and gas activities (Cai et al, 2019). In fact, background acetonitrile levels have been reported to vary from ~100 pptv to above 600 pptv across different regions (Huangfu et al, 2021 and references therein).…”

mentioning

confidence: 99%

Evaluation of aerosol- and gas-phase tracers for identification of transported biomass burning emissions in an industrially influenced location in Texas, USA

Shrestha

Zhou

Mehra

et al. 2023

Preprint

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Abstract. As criteria pollutants from anthropogenic emissions have declined in the US in the last two decades, biomass burning (BB) emissions are becoming more important for urban air quality. Tracking the transported BB emissions and their impacts is challenging, especially in areas that are also burdened by anthropogenic sources like the Texas Gulf coast. During the Corpus Christi and San Antonio (CCSA) field campaign in Spring 2021, two long-range transport BB events (BB1 and BB2) were identified. The observed patterns of absorption Ångström Exponent (AAE), high-resolution time-of-flight aerosol mass spectrometer (HR-ToF-AMS) BB tracer (f60), equivalent black carbon (eBC), acetonitrile and carbon monoxide (CO) during BB1 and BB2 indicated differences in the mixing of transported BB plumes with local anthropogenic sources. The combined information from HYSPLIT backward trajectory (BTs) and satellite observations revealed that BB1 had mixed influence of transported smoke plumes from fires in Central Mexico, the Yucatan peninsula, and the Central US, whereas BB2 was influenced majorly by fires in the Central US. The estimated transport time of smoke from the Mexican fires and the Central US fires to our study site were not too different (48–54 hours and 24–36 hours, respectively) and both events appeared to have undergone similar levels of atmospheric processing, as evident in the elemental ratios of bulk organic aerosol (OA). We observed a progression of f44 vs. f60 as a function of time elapsed during BB2. Positive matrix factorization (PMF) analysis of OA showed that BB1 had a mixture of organics from aged BB emission with an anthropogenic marine signal while the oxidized organic compounds from aged BB emissions dominated the aerosols during BB2. While aerosol measurements exhibited good agreement with respect to the BB designation, the CO and acetonitrile trends revealed more complicated source contributions. Our analysis from mobile and stationary measurements highlights that both CO and acetonitrile are likely impacted by local sources even during the BB events and specifically that acetonitrile cannot be used as a unique BB tracer for dilute BB plumes in an industrially influenced location. Finally, we provide evidence of the potential regional impacts of these transported BB events on urban O3 levels using measurements from the surface air quality monitoring network in Texas.

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Effective improvement of 2.0-µm and 4.1-µm mid-infrared emission in Tm3+/Ho3+-co-doped tellurite glasses

Zhang

Lai

2022

J Mater Sci: Mater Electron

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High-resolution and -precision spectra of acetonitrile at the ν5-band for laser remote sensing

Cited by 8 publications

References 23 publications

Revisiting Acetonitrile as Tracer of Biomass Burning in Anthropogenic‐Influenced Environments

Revisiting Acetonitrile as Tracer of Biomass Burning in Anthropogenic‐Influenced Environments

Evaluation of aerosol- and gas-phase tracers for identification of transported biomass burning emissions in an industrially influenced location in Texas, USA

Effective improvement of 2.0-µm and 4.1-µm mid-infrared emission in Tm3+/Ho3+-co-doped tellurite glasses

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