A year of continuous measurements of three atmospheric mercury species (GEM, RGM and Hg) in southern Qu�bec, Canada

Poissant, Laurier; Pilote, Martin; Beauvais, Conrad; Constant, Philippe; Zhang, Hong H.

doi:10.1016/j.atmosenv.2004.11.007

Cited by 206 publications

(168 citation statements)

References 21 publications

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“…Previous studies reported that the GEM concentration tends to decrease, while RGM or Hg p concentration is likely to increase, at elevated O 3 concentration (Selin et al, 2007;Sommar et al, 2010). It (Mason and Sheu, 1994;Schroeder and Munthe, 1998;Lin and Pehkonen, 1999;Lu et al, 2001;Mason and Sheu, 2002;Poissant et al, 2005;Feng and Qiu, 2008). However, if the aerosol particles contained high content of sea salts from oceanic spray, O 3 could be adsorbed onto the surface of these aerosol particles, and thus reducing the O 3 concentration, and more importantly, further oxidizing gaseous elemental mercury (GEM) to its oxidized forms (Hg + and Hg…”

Section: Correlation Of Tgm With Meteorological Parameters and Critermentioning

confidence: 99%

“…Atmospheric mercury exists primarily in three forms based on its chemical and physical properties, including gaseous elemental mercury (GEM), reactive gaseous mercury (RGM), and particulate mercury (Hg p ) (Schroeder and Munthe, 1998;Lin and Pehkonen, 1999;Poissant et al, 2005;Feng and Qiu, 2008;Jen et al, 2012;Huang et al, 2013). Collectively, sum of GEM and RGM are referred as total gaseous mercury (TGM), while sum of GEM, RGM, and Hg p are referred as total atmospheric mercury (TAM).…”

Section: Introductionmentioning

confidence: 99%

“…Such as an environment of high humidity and high wind speed could promote the TGM concentration in ambient air to remove, as O 3 concentration become higher, TGM concentration tended to decrease (Fu et al, 2009(Fu et al, , 2010. Besides, the regional sources and its characteristics might also influence the temporal variation and spatial distribution of atmospheric mercury speciation, concentration, and deposition flux Sheu, 1994, 2002;Poissant and Hoenninger, 2004;Poissant et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

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Field Measurement of Total Gaseous Mercury and Its Correlation with Meteorological Parameters and Criteria Air Pollutants at a Coastal Site of the Penghu Islands

Jen

Chen

Hung

et al. 2014

Aerosol Air Qual. Res.

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This study investigated the seasonal and daily variations of the total gaseous mercury (TGM) concentration in the ambient atmosphere, the correlation of TGM concentration with meteorological parameters (e.g., temperature, humidity, and wind speed) and criteria air pollutant concentrations (e.g., SO 2 , NO x , CO, O 3 , PM 10 , and PM 2.5 ), as well as the transportation routes, at the Penghu Islands. The field measurement results showed that the average TGM concentration during the monitoring period was 3.17 ± 1.17 ng/m 3 , within the range of 1.17-8.63 ng/m 3 , with the highest concentration being observed in spring, while the TGM concentration typically increased in the morning, reached its peak concentration, and then started to decrease at nightfall. Moreover, the lowest average TGM concentration of 1.81 ± 0.15 ng/m 3 was observed in summer, and this figure is close to the background TGM concentration of the Northern Hemisphere (1.6-1.8 ng/m 3 ). The correlation analysis indicated that TGM concentration correlated positively with SO 2 , NO x , CO, O 3 , PM 10 , PM 2.5 and negatively with ambient temperature, relative humidity, and wind speed. In addition, the transportation route analysis showed that elevated TGM concentrations could be transported from either North China, East China, or South China to the Penghu Islands, while those originating from the South China Sea had the lowest contribution to the TGM levels at the Penghu Islands. Therefore, local sources and open burning might be mainly influenced by the long-range transportation of air masses, as the prevailing wind direction and air mass transportation routes potentially play critical roles in the variation of TGM concentration at the Penghu Islands.

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Section: Correlation Of Tgm With Meteorological Parameters and Critermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Field Measurement of Total Gaseous Mercury and Its Correlation with Meteorological Parameters and Criteria Air Pollutants at a Coastal Site of the Penghu Islands

Jen

Chen

Hung

et al. 2014

Aerosol Air Qual. Res.

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“…19, 32, [34][35][36] Atmospheric mercury has become a more prominent interest with concerns about the effects of mercury on the health of both humans 37 and wildlife 38,39 ever since the diagnosis of Minamata disease in 1960 40 . The highest risk to human health is thought to be through the consumption of fish with high levels of bioaccumulated methylmercury by higher 60 predators.…”

mentioning

confidence: 99%

Patterns and source analysis for atmospheric mercury at Auchencorth Moss, Scotland

Kentisbeer

Leeson

Malcolm

et al. 2014

Environ. Sci.: Processes Impacts

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“…Through improvements in industrial processes and emission controls, atmospheric mercury levels have been gradually declining since then 36,37 , and currently the average northern hemispherical background concentration is between 1.4 and 1.7 ng m -3 . 22,36,[38][39][40] Ever since the diagnosis of Minamata disease in 1960 41 , the effects of mercury on the health of both humans 42 and wildlife 43,44 has made the interest in atmospheric mercury more prominent, with the highest risk to human health thought to be through the consumption of fish with elevated levels of mercury, which have bioaccumulated through the food chain into higher predators [45][46][47] . Health policy reflects this risk, with several industrialised countries issuing fish consumption guidelines.…”

Section: Introductionmentioning

confidence: 99%

Influences on and patterns in total gaseous mercury (TGM) at Harwell, England

Kentisbeer

Leeson

Clark

et al. 2015

Environ. Sci.: Processes Impacts

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The NERC and CEH trademarks and logos ('the Trademarks') are registered trademarks of NERC in the UK and other countries, and may not be used without the prior written consent of the Trademark owner. Influences on and patterns in total gaseous mercury (TGM) at Harwell, EnglandAuthors: J Kentisbeer, S.R. Leeson, T Clark, H.M. Malcolm and J.N. Cape AbstractTotal Gaseous Mercury (TGM) was monitored during 2013 at the rural monitoring site, Harwell, England using the Tekran 2537A monitoring system. Average TGM for the year was 1.45 ± 0.24 ng m -3 . This is comparable to other northern hemisphere studies, but on average 0.05 ng m -3 higher than at its sister monitoring station at Auchencorth Moss, Scotland, but 14% lower than that found in a similar study at the same location of 1.68 ng m -3 in 1995/6. Using wind sector analysis we show the important influence of local emissions, with our data showing that the largest influence on TGM observed is that of the adjacent Science & Innovation campus, making the site more a 'suburban background'. By using co-located measurements of black carbon and sulphur dioxide as tracers, we present an initial investigation into the impact of the closure of Didcot A coal fired power station, which ceased operating in March 2013. Further analysis using air mass back trajectories shows the long-range contribution to TGM from continental Europe, and that the lowest levels are associated with marine air masses from the west.

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A year of continuous measurements of three atmospheric mercury species (GEM, RGM and Hg) in southern Qu�bec, Canada

Cited by 206 publications

References 21 publications

Field Measurement of Total Gaseous Mercury and Its Correlation with Meteorological Parameters and Criteria Air Pollutants at a Coastal Site of the Penghu Islands

Field Measurement of Total Gaseous Mercury and Its Correlation with Meteorological Parameters and Criteria Air Pollutants at a Coastal Site of the Penghu Islands

Patterns and source analysis for atmospheric mercury at Auchencorth Moss, Scotland

Influences on and patterns in total gaseous mercury (TGM) at Harwell, England

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