J
Junwen Liu
Researcher at Jinan University
Publications - 53
Citations - 1132
Junwen Liu is an academic researcher from Jinan University. The author has contributed to research in topics: Environmental science & Chemistry. The author has an hindex of 16, co-authored 37 publications receiving 788 citations. Previous affiliations of Junwen Liu include Chinese Academy of Sciences & Oeschger Centre for Climate Change Research.
Papers
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Journal ArticleDOI
The importance of non-fossil sources in carbonaceous aerosols in a megacity of central China during the 2013 winter haze episode: A source apportionment constrained by radiocarbon and organic tracers
Junwen Liu,Junwen Liu,Jun Li,Matthias Vonwiller,Matthias Vonwiller,Di Liu,Hairong Cheng,Kaijun Shen,Gary Salazar,Konstantinos Agrios,Konstantinos Agrios,Yan-Lin Zhang,Yan-Lin Zhang,Quanfu He,Xiang Ding,Guangcai Zhong,Xinming Wang,Sönke Szidat,Gan Zhang +18 more
TL;DR: In this paper, a source apportionment of different carbonaceous aerosols (CAs) was conducted in a megacity in central China (Wuhan, Hubei Province) by using the measurements of radiocarbon and molecular organic tracers.
Journal ArticleDOI
Micro-scale (μg) radiocarbon analysis of water-soluble organic carbon in aerosol samples
Yan-Lin Zhang,Yan-Lin Zhang,Yan-Lin Zhang,Junwen Liu,Gary Salazar,Gary Salazar,Jun Li,Peter Zotter,Gan Zhang,Rongrong Shen,Klaus Schäfer,Jürgen Schnelle-Kreis,André S. H. Prévôt,Sönke Szidat,Sönke Szidat +14 more
TL;DR: In this article, a fast and reliable method for measuring 14 C in micro-scale (mg) WSOC aerosol samples is successfully developed, which includes three steps: (1) extraction (2) freeze drying, and (3) online 14 C analysis of CO2 from WSOC combustion.
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High Gaseous Nitrous Acid (HONO) Emissions from Light-Duty Diesel Vehicles.
Songdi Liao,Jiachen Zhang,Fei Yu,M. Zhu,Junwen Liu,Jiamin Ou,Huabin Dong,Qinge Sha,Zhuangmin Zhong,Yan Xie,Haoming Luo,Lihang Zhang,Junyu Zheng +12 more
TL;DR: A novel portable online vehicular HONO exhaust measurement system featuring an innovative dilution technique is developed, which for the first time investigated the HONo emission characteristics of 17 light-duty diesel trucks and 16 light- duty gasoline vehicles in China.
Journal ArticleDOI
Characterization of particulate smoke and the potential chemical fingerprint of non-road construction equipment exhaust emission in China.
TL;DR: The emission characteristics of NRCE-related particles and the ratio of vanadium and nickel can be used as a good tracer of NREC emission, which is distinct from other key combustion sources such as industry and ship emission are revealed.
Journal ArticleDOI
Evidence of Rural and Suburban Sources of Urban Haze Formation in China: A Case Study From the Pearl River Delta Region
Junwen Liu,Junwen Liu,Junwen Liu,Ping Ding,Zheng Zong,Jun Li,Chongguo Tian,Weihua Chen,Ming Chang,Gary Salazar,Chengde Shen,Zhineng Cheng,Yingjun Chen,Xuemei Wang,Soenke Szidat,Gan Zhang +15 more
TL;DR: Wang et al. as discussed by the authors reported the first study to report both daily 14C and 15N signals in China and identify nonfossil sources from rural/suburban areas as triggers of summer haze.