Characteristics, evolution, and regional differences of biomass burning particles in the Sichuan Basin, China

Luo, Jinqi; Zhang, Junke; Huang, Xiaojuan; Liu, Qin; Luo, Bin; Zhang, Wei; Rao, Zhihan; Yu, Yanshan

doi:10.1016/j.jes.2019.09.015

Cited by 26 publications

(18 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Compared to the whole study period, the total contributions of the three kinds of secondary inorganic particles (i.e., K–NO 3 , K–SO 4 and K-SN particles) all increased during EP1 and their total contribution increased from 49.0% to 60.7%. According to previous studies, secondary inorganic particles experience long-term aging in the atmosphere, and regional transmission makes an important contribution to the increase in the contribution of these particles in Chengdu ( Huang et al, 2018 ; Luo et al, 2020 ; Wu et al, 2019 ). Meanwhile, the contribution of CC particles, which are transmitted mainly from the industrial areas around Chengdu or other industrial cities in Sichuan province, increased by 1.4%.…”

Section: Resultsmentioning

confidence: 97%

“…Sichuan began its ELPHER period on January 25, 2020, and the whole province went into lockdown on the same day. Many previous studies have pointed out that air pollution in Sichuan province is affected by the topography and climate of the basin and the pollution formation mechanism is obviously different from that of cities in North China ( Gao et al, 2018 ; Ji et al, 2016 ; Luo et al, 2020 ; Xu et al, 2018b ). Although many studies have reported the effects of COVID-19 lockdown on the air pollution in many cities in China, studies on Sichuan province or southwest China are fewer.…”

Section: Introductionmentioning

confidence: 98%

See 1 more Smart Citation

Particle composition, sources and evolution during the COVID-19 lockdown period in Chengdu, southwest China: Insights from single particle aerosol mass spectrometer data

Zhang

Chen

et al. 2022

Atmospheric Environment

Self Cite

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 98%

Particle composition, sources and evolution during the COVID-19 lockdown period in Chengdu, southwest China: Insights from single particle aerosol mass spectrometer data

Zhang

Chen

et al. 2022

Atmospheric Environment

Self Cite

View full text Add to dashboard Cite

“…K + is also another feature of this type of particle emission (Bi et al, 2011;Hudson et al, 2004). There were obvious relative ion intensity differences at 26 CN − , 42 CNO − , 46 NO − 2 and 62 NO − 3 among these types, which implied that these three particle types might be from different burning sources or experienced different levels of aging (Luo et al, 2020). While these three particle types were lumped together as Type 2LR, this critical information which could be potentially used to distinguish particle sources and aging processes was lost.…”

Section: Particle Classification By Art-2amentioning

confidence: 96%

Development of an automatic linear calibration method for high-resolution single-particle mass spectrometry: improved chemical species identification for atmospheric aerosols

Zhu

Wang

et al. 2020

Atmos. Meas. Tech.

View full text Add to dashboard Cite

Abstract. The mass resolution of laser desorption ionization (LDI) single-particle aerosol mass spectrometry (SPAMS) is usually low (∼500), which has been greatly improved by the recent development of the delayed ion extraction technique. However, due to large fluctuations among LDI processes during each laser shot, accurate calibration of the mass-to-charge ratio for high-resolution SPAMS (HR-SPAMS) spectra is challenging. Here we developed an automatic linear calibration method to improve the accuracy of mass-to-charge (m∕z) measurement for single atmospheric aerosol particles. Laboratory-generated sea spray aerosol and atmospheric ambient aerosol were tested. After the calibration, the fluctuation ranges of the reference ions' (e.g., Pb+ and SO4+) m∕z reaches ±0.018 for sea spray aerosol and ±0.024 for ambient aerosol in average mass spectra. With such m∕z accuracy, the HR-SPAMS spectra of sea spray aerosol can easily identify elemental compositions of organic peaks, such as Cx, CxHy and CxHyOz. While the chemical compositions of ambient aerosols are more complicated, CxHy, CxHyOz and CNO peaks can also be identified based on their accurate mass. With the improved resolution, the time series of peaks with small m∕z differences can be separated and measured. In addition, it is also found that applying high-resolution data with enhanced mass calibration can significantly affect particle classification (identification) using the ART-2a algorithm, which classify particles based on similarities among single-particle mass spectra.

show abstract

“…Mines (distributed in the Longmen Mountains) and industrial and residential areas (distributed between the study area and the Longmen Mountains) constitute the potential sources of potential toxic metals (Pb, Cd) contamination in the area [19]. Studies have shown that potential toxic metals pollution around Mianyuan River has not changed in recent years [7,[20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Source Identification of Cd and Pb in Typical Farmland Topsoil in the Southwest of China: A Case Study

Zhang

Shi

et al. 2021

Sustainability

View full text Add to dashboard Cite

Cd and Pb in farmland topsoil are controlled by many factors. To identify the source of potential toxic metals in the farmland topsoil around Mianyuan River, the chemical analysis and multivariate statistical analysis are performed in this study. The results indicate the following: (1) The concentration of Cd and Pb in soil exceed the background value of Chinese soil elements. (2) Cd is significantly enriched in the whole region and Pb is locally enriched, both of them are more or less influenced by human activities. (3) The contents of Cd and Pb increase significantly following the flow direction of river. (4) Pb isotope analysis indicates that the main source of Pb in the soil include the air dust, coal and phosphate plant, and the contribution of them decreases successively. (5) Linear correlation analysis and principal component analysis show that the main sources of Cd in the soil are mining phosphate rock, air dust, phosphate plant and coal mining.

show abstract

Characteristics, evolution, and regional differences of biomass burning particles in the Sichuan Basin, China

Cited by 26 publications

References 50 publications

Particle composition, sources and evolution during the COVID-19 lockdown period in Chengdu, southwest China: Insights from single particle aerosol mass spectrometer data

Particle composition, sources and evolution during the COVID-19 lockdown period in Chengdu, southwest China: Insights from single particle aerosol mass spectrometer data

Development of an automatic linear calibration method for high-resolution single-particle mass spectrometry: improved chemical species identification for atmospheric aerosols

Source Identification of Cd and Pb in Typical Farmland Topsoil in the Southwest of China: A Case Study

Contact Info

Product

Resources

About