Observations of C1–C5 alkyl nitrates in the Yellow River Delta, northern China: Effects of biomass burning and oil field emissions

Zhang, Yingnan; Sun, Jingjing; Zheng, Penggang; Chen, Tianshu; Liu, Yuhong; Simpson, Isobel J.; Wang, Xinfeng; Blake, Donald R.; Li, Zeyuan; Yang, Xue; Qi, Yue; Wang, Qi; Wang, Wenxing; Xue, Likun

doi:10.1016/j.scitotenv.2018.11.208

Cited by 24 publications

(20 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To sum up, the station is characterized as a typical rural coastal site with distinct seasons and limited local anthropogenic emissions, but could be influenced by potential complicated transported regional air masses. More descriptions of this site were given by Zhang et al (2019) and Zheng et al (2019).…”

Section: Study Sitementioning

confidence: 99%

“…Meteorological parameters (temperature, relative humidity (RH), and wind direction and speed) were monitored by a portable meteorological station (PC4, China). The time resolution of all the measurements above was 1 min except for HONO at 30 s, meteorological parameters at 5 min, PM 2.5 at 30 min, and water-soluble ions in fine particles at 12 h. More details about their detection limits, precisions, and quality assurance and quality control procedures were provided by Xue et al (2016) and Zhang et al (2019).…”

Section: Measurementsmentioning

confidence: 99%

See 1 more Smart Citation

Atmospheric nitrous acid (HONO) at a rural coastal site in North China: Seasonal variations and effects of biomass burning

Zheng

Chen

et al. 2020

Atmospheric Environment

Self Cite

View full text Add to dashboard Cite

Nitrous acid (HONO) plays a significant role in atmospheric chemistry due to its contribution to hydroxyl radical (OH). However, no scientific consensus has been achieved about the daytime HONO formation mechanisms. To identify the seasonal variations of HONO chemistry and the impacts of biomass burning (BB), we performed a twophased field study in winter-spring and summer (covering a harvest season) in 2017 at a rural coastal site in North China. Though the mean HONO concentration in winter-spring (0.26 � 0.28 ppbv) was higher than in summer (0.17 � 0.19 ppbv), the maximum HONO concentrations were comparable (~2 ppbv) in the two campaigns. Both the HONO/NO x ratio and nocturnal heterogeneous conversion efficiency of HONO (C HONO ) in summer were over twice of that in winter-spring. The daytime budget analysis also revealed that the strength of P other (i.e., the HONO sources apart from the reaction of OH þ NO) in summer was double of that in winter-spring. BB affected the HONO concentration by enhancing the contribution of heterogeneous HONO production on the aerosol surface but weakening the role of photo-related HONO formation. HONO photolysis was a significant source of OH in both winter-spring and summer, and its contribution could be further enhanced during the BB episode in summer. Our study demonstrates the significant seasonal variations of HONO and the effects of BB, and suggests needs for more multiseason observations and considerations of BB, especially during the harvest time, in HONO research.

show abstract

Section: Study Sitementioning

confidence: 99%

Section: Measurementsmentioning

confidence: 99%

Atmospheric nitrous acid (HONO) at a rural coastal site in North China: Seasonal variations and effects of biomass burning

Zheng

Chen

et al. 2020

Atmospheric Environment

Self Cite

View full text Add to dashboard Cite

show abstract

“…Available long-term observations also demonstrated significant upward trends in surface O 3 levels in the last 2 decades over China (Ding et al, 2008;Wang et al, 2009;Xu et al, 2008Xu et al, , 2018Sun et al, 2016;Ma et al, 2016). A large number of studies have been dedicated to understanding the formation mechanisms of O 3 pollution and identified the major sources of O 3 precursors (particularly VOCs) in China (e.g., Zhang et al, 2008;Yuan et al, 2012;Dang et al, 2015;Shao et al, 2016;Zhao et al, 2016;Wang et al, 2017). However, O&NG extraction has long been overlooked as an important source of VOCs, compared to other anthropogenic activities such as industry, power plants, transportation, biomass burning, etc.…”

Section: Introductionmentioning

confidence: 99%

Volatile organic compounds and ozone air pollution in an oil production region in northern China

et al. 2020

Self Cite

View full text Add to dashboard Cite

Abstract. Oil and natural gas (O&NG) exploration presents a significant source of atmospheric volatile organic compounds (VOCs), which are central players of tropospheric chemistry and contribute to formations of ozone (O3) and secondary organic aerosols. The impacts of O&NG extraction on regional air quality have been investigated in recent years in North America, but have long been overlooked in China. To assess the impacts of O&NG exploration on tropospheric O3 and regional air quality in China, intensive field observations were conducted during February–March and June–July 2017 in the Yellow River delta, an oil extraction region in northern China. Very high concentrations of ambient VOCs were observed at a rural site, with the highest alkane mixing ratios reaching 2498 ppbv. High-O3 episodes were not encountered during wintertime but were frequently observed in summer. The emission profiles of VOCs from the oil fields were directly measured for the first time in China. The chemical budgets of ROx radicals and O3 were dissected with a detailed chemical box model constrained by in situ observations. The highly abundant VOCs facilitated strong atmospheric oxidation capacity and O3 formation in the region. Oxygenated VOCs (OVOCs) played an essential role in the ROx primary production, OH loss, and radical recycling. Photolysis of OVOCs, O3, and HONO as well as ozonolysis reactions of unsaturated VOCs were major primary sources of ROx. NOx was the limiting factor of radical recycling and O3 formation. This study underlines the important impacts of O&NG extraction on atmospheric chemistry and regional air quality in China.

show abstract

“…from the nearby oil and gas wells were also collected to obtain the source profiles of VOCs from the oil field. Details of the sampling site can be found elsewhere (Zhang et al, 2019).…”

Section: Site Descriptionmentioning

confidence: 99%

Volatile organic compounds and ozone air pollution in an oil production region in northern China

Chen¹,

Xue²,

Zheng³

et al. 2019

Preprint

Self Cite

View full text Add to dashboard Cite

Abstract. Oil and natural gas (O&NG) exploration presents a significant source of atmospheric volatile organic compounds (VOCs), which are central players of tropospheric chemistry and contribute to formations of ozone (O3) and secondary organic aerosols. The impacts of O&NG extraction on regional air quality have been investigated in recent years in North America, but have long been overlooked in China. To assess the impacts of O&NG exploration on tropospheric O3 and regional air quality in China, intensive field observations were conducted during February–March and June–July 2017 in the Yellow River Delta, an oil extraction region in northern China. Very high concentrations of ambient VOCs were observed at a rural site, with the highest alkane mixing ratios reaching 2498 ppbv. High O3 episodes were not encountered during wintertime but were frequently observed in summer. The emission profiles of VOCs from the oil fields were directly measured for the first time in China. The chemical budgets of ROx radicals and O3 were dissected with a detailed chemical box model constrained by in-situ observations. The highly abundant VOCs facilitated strong atmospheric oxidizing capacity and O3 formation in the region. Oxygenated VOCs (OVOCs) played an essential role in the ROx production, OH loss, and radical recycling. Photolysis of OVOCs, O3 and HONO, as well as ozonolysis reactions of unsaturated VOCs were major primary sources of ROx. NOx was the limiting factor of radical recycling and O3 formation. This study underlines the important impacts of O&NG extraction on atmospheric chemistry and regional air quality in China.

show abstract

Observations of C1–C5 alkyl nitrates in the Yellow River Delta, northern China: Effects of biomass burning and oil field emissions

Cited by 24 publications

References 45 publications

Atmospheric nitrous acid (HONO) at a rural coastal site in North China: Seasonal variations and effects of biomass burning

Atmospheric nitrous acid (HONO) at a rural coastal site in North China: Seasonal variations and effects of biomass burning

Volatile organic compounds and ozone air pollution in an oil production region in northern China

Volatile organic compounds and ozone air pollution in an oil production region in northern China

Contact Info

Product

Resources

About