Characteristics of atmospheric particulate mercury in size-fractionated particles during haze days in Shanghai

Chen, Xiao‐Jia; Balasubramanian, Rajasekhar; Zhu, Qiongyu; Behera, S. N.; Bo, Dandan; Huang, Xian; Xie, Huixiang; Cheng, Jin

doi:10.1016/j.atmosenv.2016.02.019

Cited by 35 publications

(21 citation statements)

References 40 publications

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“…This can be attributed to the greater air emissions and the relatively more stable atmosphere in the regions in autumn when regional haze prevails. During this period, the surface wind speed significantly decreases with the weakening of East Asian monsoon (Bo et al, ; X. J. Chen et al, ; Douglas & Sturm, ; Hong et al, ), leading to a more stable atmospheric condition and poor pollutant dispersion. Observational data have shown that the PBM concentration during hazy days is 2.6–3.7 times higher than the concentration of nonhazy days (Bo et al, ; X. J. Chen et al, ; Hong et al, ), consistent with our simulation results.…”

Section: Resultsmentioning

confidence: 99%

“…During this period, the surface wind speed significantly decreases with the weakening of East Asian monsoon X. J. Chen et al, 2016;Douglas & Sturm, 2004;Hong et al, 2016), leading to a more stable atmospheric condition and poor pollutant dispersion. Observational data have shown that the PBM concentration during hazy days is 2.6-3.7 times higher than the concentration of nonhazy days Hong et al, 2016), consistent with our simulation results.…”

Section: Predicted Ground Level Atmospheric Hg Concentration and Depomentioning

confidence: 99%

“…GEM = gaseous elemental mercury; GOM = gaseous oxidized mercury; PBM = particulate bound mercury. Chen et al, 2016;Ci et al, 2015;Ci, Zhang, & Wang, 2011, Ci et al, 2012Ci, Zhang, Wang, & Niu, 2011aFriedli et al, 2011;Fu, Feng, Dong, et al, 2010;Fu, Feng, Liang, et al, 2012;Fu, Feng, Shang, et al, 2012;Fu et al, 2011;Fu, Feng, Sommar, et al, 2012;Fu, Zhu, et al, 2016;Fu, Zhang, Yu, et al, 2015;Y.-J. Han et al, 2014;Hong et al, 2016;Huang et al, 2013Huang et al, , 2015Lee et al, 2016;Ma et al, 2016;Sheu & Lin, 2011Sheu et al, , 2010Song et al, 2015;Tang et al, 2018; Y. M. Wang, Peng, et al, 2014;Weiss-Penzias et al, 2015;Xu et al, 2013Xu et al, , 2015.…”

Section: Evaluation Of Model Performance Using Base-case Simulation Rmentioning

confidence: 99%

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Assessment of Regional Mercury Deposition and Emission Outflow in Mainland China

et al. 2018

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Mainland China is the largest emission region of anthropogenic mercury (Hg) in the world. There have been concerns regarding the emission outflow and chemical transport budget of Hg in the region. Earlier assessments of Hg chemical transport were based on relatively outdated emission data. Recent estimates for anthropogenic (Wu et al., 2016, https://doi.org/10.1021/acs.est.6b04308) and natural Hg emissions (X. Wang, Lin, et al., 2016, https://doi.org/10.5194/acp-16-11125-2016) show substantial differences from earlier emission inventories. In this study, we applied the updated Hg emission estimates to reassess the regional transport budget using Community Multiscale Air Quality‐Hg v5.1. Our results show that the variation of simulated concentration, deposition, and associated emission outflow of Hg are primarily influenced by the spatial‐temporal variation of Hg emissions, monsoon shifts, and particulate matter pollution in China. Total Hg deposition in Mainland China is estimated to be 422 Mg/year, and approximately two thirds of the deposition is contributed by domestic emissions. The net Hg transport budget from Mainland China is 511 Mg/year, contributing to 10% of Hg deposition in other regions of the world. This reassessment points to a ~25% reduction in total annual outflow compared to the previous estimate by Lin et al. (2010, https://doi.org/10.5194/acp-10-1853-2010). Such reduction is mainly caused by changes in Hg emission quantity, speciation, and spatial/temporal distributions. More modeling studies focusing on reducing uncertainties of emission inventories and Hg atmospheric chemistry are needed for continuous assessment of Hg emission outflow in this emission‐intensive region.

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Section: Resultsmentioning

confidence: 99%

Section: Predicted Ground Level Atmospheric Hg Concentration and Depomentioning

confidence: 99%

Section: Evaluation Of Model Performance Using Base-case Simulation Rmentioning

confidence: 99%

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Assessment of Regional Mercury Deposition and Emission Outflow in Mainland China

et al. 2018

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“…Detection limit indicates the lowest level of analyte that can be detected using the method. A few studies [ 45 – 51 ] reported lowest levels down to picograms of mercury. Methods used in these studies can be considered highly sensitive because of their low detection limits.…”

Section: Discussionmentioning

confidence: 99%

“…The precision of the data can be obtained in many ways, such as the analysis of replicates, interlab comparison of data, and relative standard deviation (RSD) of blank or standard material analysis [ 52 ]. Regarding QA, in the reviewed papers, a few [ 45 , 53 – 57 ] reported the analysis of SRMs to compare with the results of their methods. The results obtained with the measuring of SRMs give validity to the obtained data.…”

Section: Discussionmentioning

confidence: 99%

Recent Studies on the Speciation and Determination of Mercury in Different Environmental Matrices Using Various Analytical Techniques

Suvarapu

Baek

2017

International Journal of Analytical Chemistry

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This paper reviews the current research on the speciation and determination of mercury by various analytical techniques, including the atomic absorption spectrometry (AAS), voltammetry, inductively coupled plasma optical emission spectrometry (ICP-OES), ICP-mass spectrometry (MS), atomic fluorescence spectrometry (AFS), spectrophotometry, spectrofluorometry, and high performance liquid chromatography (HPLC). Approximately 96 research papers on the speciation and determination of mercury by various analytical instruments published in international journals since 2015 were reviewed. All analytical parameters, including the limits of detection, linearity range, quality assurance and control, applicability, and interfering ions, evaluated in the reviewed articles were tabulated. In this review, we found a lack of information in speciation studies of mercury in recent years. Another important conclusion from this review was that there were few studies regarding the concentration of mercury in the atmosphere.

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The Overview of Methods of Nanoparticle Exposure Assessment

Zhao

Zhang

2018

Methods in Molecular Biology

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Characteristics of atmospheric particulate mercury in size-fractionated particles during haze days in Shanghai

Cited by 35 publications

References 40 publications

Assessment of Regional Mercury Deposition and Emission Outflow in Mainland China

Assessment of Regional Mercury Deposition and Emission Outflow in Mainland China

Recent Studies on the Speciation and Determination of Mercury in Different Environmental Matrices Using Various Analytical Techniques

The Overview of Methods of Nanoparticle Exposure Assessment

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