Journal articles: 'Mercury pollution'

1

WENDROFF, ARNOLD P. "Domestic mercury pollution." Nature 347, no. 6294 (October 1990): 623. http://dx.doi.org/10.1038/347623a0.

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2

Stephenson, Joan. "Tackling Mercury Pollution." JAMA 301, no. 11 (March 18, 2009): 1118. http://dx.doi.org/10.1001/jama.2009.355.

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3

Gardner, M. J., and A. M. Gunn. "What mercury pollution?" Nature 366, no. 6451 (November 1993): 118. http://dx.doi.org/10.1038/366118b0.

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4

Ma, Lin Zhuan, Jun Ming Guo, Ying Jie Zhang, Qiong Fang Cui, Man Hong Liu, Hong Bin Wang, and Wei Bai. "Mercury’s Leaching Contamination in Soil Environment." Advanced Materials Research 581-582 (October 2012): 117–20. http://dx.doi.org/10.4028/www.scientific.net/amr.581-582.117.

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Mercury is a material with serious toxicity, and superfluous mercury can pollute large areas. The paper studied the reaction time, pH of the leaching solution, the concentration of mercury of the leaching solution’s effect for mercury’s absorption characterstic and three synergistic effect. The paper obtained some basic data about soil’s mercury pollution.

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Pradhan, Devesh. "Mercury P& Pollution." BIBECHANA 3 (February 18, 2018): 21–22. http://dx.doi.org/10.3126/bibechana.v3i0.19225.

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6

Jiang, Gui-Bin, Jian-Bo Shi, and Xin-Bin Feng. "Mercury Pollution in China." Environmental Science & Technology 40, no. 12 (June 2006): 3672–78. http://dx.doi.org/10.1021/es062707c.

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Fuge, Ronald, Nicholas J. G. Pearce, and William T. Perkins. "Mercury and gold pollution." Nature 357, no. 6377 (June 1992): 369. http://dx.doi.org/10.1038/357369a0.

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NRIAGU, JEROME O., WOLFGANG C. PFEIFFER, OLAF MALM, CRISTINA M. MAGALHAES de SOUZA, and GREGORY MIERLE. "Mercury pollution in Brazil." Nature 356, no. 6368 (April 1992): 389. http://dx.doi.org/10.1038/356389a0.

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9

Rajgopal, T. "Mercury pollution in India." Lancet 362, no. 9398 (November 2003): 1856–57. http://dx.doi.org/10.1016/s0140-6736(03)14936-7.

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10

Veiga, Marcello M., John A. Meech, and Nilda Oñate. "Mercury pollution from deforestation." Nature 368, no. 6474 (April 1994): 816–17. http://dx.doi.org/10.1038/368816a0.

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Nriagu, Jerome O. "Legacy of mercury pollution." Nature 363, no. 6430 (June 1993): 589. http://dx.doi.org/10.1038/363589a0.

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12

Álvarez-Rodríguez, R., F. Pantoja-Timarán, and A. S. Rodríguez-Avelló. "Methods to reduce mercury pollution in small gold mining operations." Revista de Metalurgia 41, no. 3 (June 30, 2005): 194–203. http://dx.doi.org/10.3989/revmetalm.2005.v41.i3.205.

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13

Qian, Jian Ping, Li Zhang, Zhan Dong Chi, Chang Xu Huang, Wen Ying Jiang, and Shan Shan Chen. "Investigation of Atmospheric Mercury Pollution in Guilin." Advanced Materials Research 383-390 (November 2011): 3763–67. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.3763.

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Atmospheric mercury in Guilin was monitored systematically, the content ranged from 7.69 to 39.93ng/m3. In general, from industrial areas to hospital areas, to commercial areas, to garden greenbelt, to residential areas, to culture and education regions, the average value of atmospheric mercury content decreased successively, it ranged from 22.89 to 9.94 ng/m3. The atmospheric mercury content was influenced by temperature, height, rainfall and circulation of air. The result of the investigation shows that the atmospheric mercury mainly comes from the emission of gaseous mercury of industrial production and special service sector, automobile exhaust, point sources of mercury pollution and transport of gaseous mercury from distance.

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14

Fujiki, M., and S. Tajima. "The Pollution of Minamata Bay by Mercury." Water Science and Technology 25, no. 11 (June 1, 1992): 133–40. http://dx.doi.org/10.2166/wst.1992.0284.

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Minamata Disease, methylmercury poisoning, was recognized late in 1953 among the inhabitants living around Minamata Bay. In a chemical factory situated near Minamata Bay, acetaldehyde had been synthesized by the hydration of acetylene till 1968; in the reaction mercury oxide dissolved in sulfuric acid had been used as a catalyst. Inorganic mercury in waste water from the acetaldehyde plant had been discharged into the bay and it had accumulated into bottom sediment. It was proved that a part of inorganic mercury used as the catalyst had changed into methylmercury by a sidereaction in the plant and waste water containing methylmercury from the plant had discharged into the bay and methylmercury had accumulated into the fishes. The mercury concentrations in the muds were very high: in 1963, 29~713 ppm (dry weight); in 1969, 19~908 ppm (dry weight); in 1970, 8~253 ppm (dry weight) and in 1971, 14~586 ppm (dry weight). Since 1977, dredging work had been carried out to remove mercury-contaminated mud and all of the work had finished at March 1990. The concentration of mercury in fishes from the bay was very high in 1959: shellfishes 108~178 ppm (dry weight) and fish 15 ppm (wet weight). Mercury concentration in fishes has decreased markedly since 1966. Total mercury concentration in fishes (87 species) were 0.01~1.74 ppm (wet weight) and fishes containing over 0.4 ppm of total mercury were 16 species in 1989. The hair of patients contained a high concentration of mercury, the highest being 705 ppm. In 1968, the average mercury concentration in patients was 10.6 ppm, for fishermen, the average was 9.2 ppm, and for general inhabitants, the average was 8.1 ppm. In 1982, the average methylmercury concentration in fishermen was 6.15 ppm and for general inhabitants, the averge was 3.78 ppm. Thus, the mercury content in hair decreased gradually with time. After treatment of mercury in waste water was initiated, the mercury content in fishes from Minamta Bay was gradually reduced. It is necessary to supervise strictly to avoid mercury pollution of the environment.

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YOSHITOMI, TOMOYASU, NAOKI YAGINUMA, HIROYUKI ISO, TAKAHIRO ISHIKAWA, HITOSHI IMASEKI, and SHINO HOMMA-TAKEDA. "MERCURY DISTRIBUTION BY MICRO PIXE ANALYSIS IN STENOPSYCHE MARMORATA EXPOSED TO MERCURIC CHLORIDE." International Journal of PIXE 18, no. 01n02 (January 2008): 69–75. http://dx.doi.org/10.1142/s0129083508001363.

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Aquatic insects, such as caddisflies, are used as reference organisms for water pollution. The precise distribution of contaminated metals in the insect, however, remains unknown. In this study, we used micro PIXE analysis to examine mercury distribution in Stenopsyche marmorata, a typical caddisfly, exposed to mercuric chloride. The mercury level in the caddisflies after exposure to mercuric chloride at 1 mg/L for 5 days was 93.3 ± 25.0 μ g/g wet weight. Micro PIXE analysis also revealed a site-specific distribution of mercury in the insects. Mercury was high in the digestive tract, where it was localized in the basement membrane and the peritrophic membrane. Mercury was also detected in the tissue surrounding the digestive tract. Further examination of the tissue identified mercury in the fat body but not in the silk gland.

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16

Diao, Chun Yan, and Jian Feng Li. "Research on Monitoring and Analyzing Status of Atmospheric Mercury Pollution." Advanced Materials Research 955-959 (June 2014): 1317–20. http://dx.doi.org/10.4028/www.scientific.net/amr.955-959.1317.

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Through analyzing various monitoring methods and data of atmosphere mercury pollution at home and abroad, the results showed that atmosphere mercury monitoring networks of southern hemisphere were not enough perfect, atmosphere mercury monitoring data lacked representativeness, and it is more difficult to research atmosphere mercury long-term changes trend within global range. Meanwhile, it also found that There were shortcomings for atmosphere mercury pollution monitoring status in China and indicated development direction and future trend of atmosphere mercury pollution monitoring analysis.

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17

Degila, Hermione W., N. B. Nadia Azon, Julien G. Adounkpe, A. V. Onésime Akowanou, and Martin P. Aïna. "Mercure: sources d’émission, toxicité, contamination du milieu aquatique et particularité du Benin." International Journal of Biological and Chemical Sciences 13, no. 7 (February 13, 2020): 3429–48. http://dx.doi.org/10.4314/ijbcs.v13i7.36.

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La prise de conscience collective du pouvoir létal du mercure suite aux intoxications massives au Japon et en Irak ont conduit à l’adoption de la convention de Minamata sur le mercure que le Bénin a signé et ratifié. Le présent article fait la synthèse des connaissances sur son émission, sa toxicité en milieu aquatique avec un accent sur la contamination aquatique au Bénin. Pour y parvenir, des publications scientifiques et les archives des ministères de l’environnement et de la santé au Bénin ont été consultées. Il ressort que, la production artisanale à petite échelle de l’or et la combustion de charbon constituent les principales sources d’émission de mercure dans le monde avec respectivement 37,1% et 24,2% des émissions anthropiques. Au Bénin, les piles contenant du mercure (49%) l’orpaillage artisanal (22%) et les dépôts informels de déchets généraux (13%) sont les principales sources potentielles d’émission anthropique. Les régions actuellement les plus émettrices de mercure sont l’Asie et l’Afrique sub-saharienne avec respectivement 50% et 16,8% des émissions anthropiques. La formation du méthylmercure en milieu aquatique sous l’influence de divers facteurs et sa bioaccumulation sont principalement responsable des effets toxiques sur l’homme.Mots clés : Environnement, pollution, mercure, méthyl mercure, milieu aquatique, toxicité.English Title: Mercury: sources of emission, toxicity, contamination of aquatic environment and particularity of Benin republic.The massive mercury poisoning that has occurred in Japan and Iraq has led to a global awareness of the lethal power of this metal with the adoption by the international community of the Minamata Convention signed and ratified by Benin Republic. This article aims to synthesize knowledge on mercury through its emission sources, its toxicity with a focus on aquatic contamination in Benin. Thus, a review of scientific publications as well as the consultation of the archives of the Ministries of Environment and Health in Benin were carried out. Analyses of the various documents show that artisanal small-scale gold production and coal combustion are the main sources of mercury emission worldwide, with respectively 37.1% and 24.2% of anthropogenic emissions. Asia and sub-Saharan Africa would be the largest contributors to anthropogenic emissions with respectively 50% and 16.8%. In Benin, the main potential sources of anthropogenic emissions are mercury containing batteries (49%), followed by artisanal gold panning (22%) and informal deposits of general waste (13%). With regard to the behavior of mercury in the aquatic environment and its toxicity, it appears that methyl mercury is mainly responsible for toxic effects.Keywords: Environment, pollution, mercury, methyl mercury, aquatic environment, toxicity Bénin.

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18

Hylander, Lars D., and Michael E. Goodsite. "Environmental costs of mercury pollution." Science of The Total Environment 368, no. 1 (September 2006): 352–70. http://dx.doi.org/10.1016/j.scitotenv.2005.11.029.

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19

Hongling, Guo. "Atmospheric Mercury Pollution in Beijing." Chinese Journal of Population Resources and Environment 7, no. 3 (January 2009): 92–96. http://dx.doi.org/10.1080/10042857.2009.10684945.

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20

Nakanishi, Hiroshi, Masayuki Ukita, Masayuki Sekine, and Sadaaki Murakami. "Mercury pollution in Tokuyama Bay." Hydrobiologia 176-177, no. 1 (July 1989): 197–211. http://dx.doi.org/10.1007/bf00026555.

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21

Camargo, Julio A. "Which source of mercury pollution?" Nature 365, no. 6444 (September 1993): 302. http://dx.doi.org/10.1038/365302a0.

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22

Abola, Anda, Maris Strazds, Zanda Gavare, and Rita Veilande. "ASSESSING MERCURY POLLUTION USING BLACK STORK EGGSHELLS." ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 1 (June 16, 2021): 12–16. http://dx.doi.org/10.17770/etr2021vol1.6528.

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Female birds whose bodies contain environmental contaminants produce eggs with shells that are likewise contaminated, making bird eggshells appropriate indicators for monitoring environmental toxins. Common contaminants include organic mercury compounds, especially methylmercury, which are known to bioaccumulate and biomagnify in the food chain. Black storks (Ciconia nigra) predominantly consume fish and are thus at risk for high mercury intake. In this study, we used eggshells of black storks as a proxy to reconstruct the concentration levels and distribution of mercury, a well-known toxic element, in various parts of Latvia. Preliminary analyses have shown that deposition levels of mercury vary in different parts of the eggshell. Specifically, the shell and shell membrane differ in their level of mercury contamination by an average factor of nine; therefore, we measured the mercury content in these components separately whenever possible. We analysed 34 eggshell samples from nesting sites in Latvia using an atomic absorption spectrometer with Zeeman correction Lumex RA-915M and its attachment for pyrolytic combustion. We found that mercury concentrations varied from 5 to 22 ng/g in eggshells and from 42 to 293 ng/g in shell membranes. We discuss possible contamination sources and reasons behind this disparity.

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23

Gu, Jian, and Zuo Xin Liu. "Investigation and Evaluation on Heavy Metal Pollution of Vegetable Farm Soils in Fuxin, China." Advanced Materials Research 955-959 (June 2014): 3661–64. http://dx.doi.org/10.4028/www.scientific.net/amr.955-959.3661.

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the paper discussed the pollution of heavy metal in vegetable farm soils in Fuxin city, China. The levels of lead, cadmium, chromium, arsenic and mercury in 5 soil samples obtained from vegetable farm soil were detected. The levels of lead, cadmium, chromium, arsenic and mercury were17.12-34.62mg/kg,0.12-0.24 mg/kg,32.28-50.96 mg/kg,6.86-8.83 mg/kg and 0.14-0.16 mg/kg, respectively. At same time, we have done some evaluation for vegetable farm soils pollution of Fuxin. The vegetable farm soils were contaminated by mercury in great universality, and the next is cadmium. As for contaminated degree, mercury-pollution is severe, and the second were cadmium, and the rest are slightly polluted. Compared the present pollution change, soil pollution in Fuxin is aggravate, which should grasp management, especially the serious mercury pollution that should pay attention to the monitoring mercury enterprises.

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24

Rakitskii, V. N., T. A. Synitskaya, and Sergeii V. Skupnevskii. "Current issues of environmental mercury pollution (review)." Hygiene and sanitation 99, no. 5 (July 7, 2020): 460–67. http://dx.doi.org/10.47470/0016-9900-2020-99-5-460-467.

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The review summarizes the results of studying the problem of environmental mercury pollution and associated risks to public health. Toxicological and hygienic studies include an analysis of the main sources of heavy metal emissions, ways of their distribution in the environment and biological effects on humans. The basis of anthropogenic pollution was shown to include the following: artisanal mining, coal burning and non-ferrous metal production. Out of the places of emissions metal is distributed with atmospheric air over long distances, as evidenced by the results of monitoring studies conducted in the Arctic and Antarctica. Pollution of water is extremely dangerous for human health, since it is proven that the main source of mercury intake is associated with the consumption of fish and seafood. In the soil horizon the toxicant is localized mainly in arable layers but in places where mercury-containing waste is stored, the metal can migrate to a depth of 18 m or more. Analysis of the mechanisms of adsorption, distribution, metabolism and excretion allows concluding: the greatest threat to health are metal-organic forms (methyl-and dimethyl-mercury), which is associated with the high lipophilicity of these compounds. On the example of Minamata disease there is given a description of the characteristic signs of mercury intoxication among which the Central nervous system is the leading one. There are presented the results of the research of biological effects of low metal concentrations and modern means of preventing negative impact on human health. Contact of the General population in production and everyday life determines the necessity for a comprehensive study and coverage of the effects associated with exposure of toxic mercury compounds.

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Rakitskii, V. N., T. A. Synitskaya, and Sergeii V. Skupnevskii. "Current issues of environmental mercury pollution (review)." Hygiene and sanitation 99, no. 5 (July 7, 2020): 460–67. http://dx.doi.org/10.33029/0016-9900-2020-99-5-460-467.

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The review summarizes the results of studying the problem of environmental mercury pollution and associated risks to public health. Toxicological and hygienic studies include an analysis of the main sources of heavy metal emissions, ways of their distribution in the environment and biological effects on humans. The basis of anthropogenic pollution was shown to include the following: artisanal mining, coal burning and non-ferrous metal production. Out of the places of emissions metal is distributed with atmospheric air over long distances, as evidenced by the results of monitoring studies conducted in the Arctic and Antarctica. Pollution of water is extremely dangerous for human health, since it is proven that the main source of mercury intake is associated with the consumption of fish and seafood. In the soil horizon the toxicant is localized mainly in arable layers but in places where mercury-containing waste is stored, the metal can migrate to a depth of 18 m or more. Analysis of the mechanisms of adsorption, distribution, metabolism and excretion allows concluding: the greatest threat to health are metal-organic forms (methyl-and dimethyl-mercury), which is associated with the high lipophilicity of these compounds. On the example of Minamata disease there is given a description of the characteristic signs of mercury intoxication among which the Central nervous system is the leading one. There are presented the results of the research of biological effects of low metal concentrations and modern means of preventing negative impact on human health. Contact of the General population in production and everyday life determines the necessity for a comprehensive study and coverage of the effects associated with exposure of toxic mercury compounds.

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26

Obrist, Daniel, Yannick Agnan, Martin Jiskra, Christine L. Olson, Dominique P. Colegrove, Jacques Hueber, Christopher W. Moore, Jeroen E. Sonke, and Detlev Helmig. "Tundra uptake of atmospheric elemental mercury drives Arctic mercury pollution." Nature 547, no. 7662 (July 2017): 201–4. http://dx.doi.org/10.1038/nature22997.

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27

Ping Li, Xinbin Feng, Lihai Shang, Guangle Qiu, Bo Meng, Peng Liang, and Hua Zhang. "Mercury pollution from artisanal mercury mining in Tongren, Guizhou, China." Applied Geochemistry 23, no. 8 (August 2008): 2055–64. http://dx.doi.org/10.1016/j.apgeochem.2008.04.020.

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28

Perkins, John H. "Editorial: Mercury: Persistence, Pollution, and Politics." Environmental Practice 6, no. 2 (June 2004): 99–100. http://dx.doi.org/10.1017/s1466046604000183.

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29

Sharma, Dinesh C. "India a Hotspot for Mercury Pollution." Frontiers in Ecology and the Environment 1, no. 9 (November 2003): 458. http://dx.doi.org/10.2307/3868106.

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30

AKAGI, HIROKATU. "Mercury Pollution in the Amazon, Brazil." Eisei kagaku 41, no. 2 (1995): 107–15. http://dx.doi.org/10.1248/jhs1956.41.107.

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31

Sharma, Dinesh C. "Concern over mercury pollution in India." Lancet 362, no. 9389 (September 2003): 1050. http://dx.doi.org/10.1016/s0140-6736(03)14456-x.

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32

Aucott, Michael. "Compact Fluorescent Bulbs and Mercury Pollution." Journal of Industrial Ecology 13, no. 5 (October 2009): 658–61. http://dx.doi.org/10.1111/j.1530-9290.2009.00165.x.

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33

Jones, D. W. "Putting dental mercury pollution into perspective." British Dental Journal 197, no. 4 (August 2004): 175–77. http://dx.doi.org/10.1038/sj.bdj.4811564.

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34

Showstack, Randy. "Treaty to Curb Mercury Pollution Adopted." Eos, Transactions American Geophysical Union 94, no. 43 (October 22, 2013): 387. http://dx.doi.org/10.1002/2013eo430004.

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35

Tang, Chuan, Martin D. Heintzelman, and Thomas M. Holsen. "Mercury pollution, information, and property values." Journal of Environmental Economics and Management 92 (November 2018): 418–32. http://dx.doi.org/10.1016/j.jeem.2018.10.009.

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36

Li, Tie Yun. "Mercury Processing in PVC Production." Applied Mechanics and Materials 214 (November 2012): 381–85. http://dx.doi.org/10.4028/www.scientific.net/amm.214.381.

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Mercury is highly toxic heavy metal pollution attracted the attention of the world. This paper analyzes the situation the main industry in mercury use PVC production. Manufacture of battery, electric light, medical equipment in China. Furthermore, it discusses the details of the best technology the use of mercury emissions reduction and mercury control in that industry. The result is that certain technologies such as low mercury. In PVC industry catalyst, as mercury battery, amalgam substituted Mercury and LED light in the electric light source industry, electronics the thermometer and blood pressure in the medical device industry and so on, reduce mercury able to make full use of and emission reduction in risk mercury pollution to the environment.

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Kudo, A., Y. Fujikawa, M. Mitui, M. Sugahara, G. Tao, J. Zheng, T. Sasaki, S. Miyahara, and T. Muramatsu. "History of mercury migration from Minamata Bay to the Yatsushiro Sea." Water Science and Technology 42, no. 7-8 (October 1, 2000): 177–84. http://dx.doi.org/10.2166/wst.2000.0567.

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Mercury concentrations were measured in sediment cores collected from the Yatsushiro Sea to clarify physical transport of mercury from Minamata, the site of major methylmercury pollution in Japan, to the surrounding sea. The results suggested that the mercury pollution in the Yatsushiro Sea sediment was caused by a slow migration of mercury-bearing sediment particles from Minamata Bay. The deposition rate of mercury observed at the Yatsushiro Sea was correlated with cumulative loss of mercury from an acetaldehyde facility in Chisso Minamata, with a certain time-lag.

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38

Gerson, Jacqueline R., Simon N. Topp, Claudia M. Vega, John R. Gardner, Xiao Yang, Luis E. Fernandez, Emily S. Bernhardt, and Tamlin M. Pavelsky. "Artificial lake expansion amplifies mercury pollution from gold mining." Science Advances 6, no. 48 (November 2020): eabd4953. http://dx.doi.org/10.1126/sciadv.abd4953.

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Artisanal and small-scale gold mining (ASGM) is the largest global source of anthropogenic mercury emissions. However, little is known about how effectively mercury released from ASGM is converted into the bioavailable form of methylmercury in ASGM-altered landscapes. Through examination of ASGM-impacted river basins in Peru, we show that lake area in heavily mined watersheds has increased by 670% between 1985 and 2018 and that lakes in this area convert mercury into methylmercury at net rates five to seven times greater than rivers. These results suggest that synergistic increases in lake area and mercury loading associated with ASGM are substantially increasing exposure risk for people and wildlife. Similarly, marked increases in lake area in other ASGM hot spots suggest that “hydroscape” (hydrological landscape) alteration is an important and previously unrecognized component of mercury risk from ASGM.

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Zhang, Qiang, Wei Guo Pan, and Rui Tang Guo. "The Research of SCR Catalyst for Elemental Mercury Conversion in Coal-Fired Flue Gas." Advanced Materials Research 864-867 (December 2013): 1470–73. http://dx.doi.org/10.4028/www.scientific.net/amr.864-867.1470.

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To control mercury pollution has become a major issue nowadays. The SCR systems in power plant can oxide the elemental mercury into oxidized mercury, which can be removed by WFGD, it became a very feasible measures to control mercury pollution. The core part of SCR system is SCR catalyst. The influence of different metal composition and modification of SCR catalyst and the gas composition in simulative flue gas for the efficiency of the conversion of elemental mercury are introduced ,for sifting the catalyst with high efficiency for mercury conversion under the condition of low temperature.

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Wu, Jiang, Ji Hui Fang, Min Yu Sun, Ye Cheng Wu, Jian Xing Ren, Wei Guo Pan, Tai Zhang, Lin Chai, and Jing Wang. "Experimental Research on Effects of Coal-Fired Derived Mercury Emissions on Human Hair’s Mercury Concentrations." Advanced Materials Research 322 (August 2011): 47–51. http://dx.doi.org/10.4028/www.scientific.net/amr.322.47.

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Cold vapor atomic adsorption spectrometry method was used in measuring mercury content in human’s hair samples after comparing the mercury measurement methods. Aqua regia-hydrofluoric acid digestion was taken to pretreat hair samples, and then mercury volume can be attained by Hydra AA Automatic mercury analyzer. Mercury concentration in about 40 percent of the tested samples exceeded the U.S. EPA recommended level 1μg/g. The results were analyzed from different respects including living environments, age distribution and dietary habits, and so on. The experimental data can supply a possible proof of mercury pollution in the studied district, and build foundation for the following full-scale mercury pollution investigation.

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41

Wang, Hao Chen, Jing Yang, and He Ping Lin. "Application of RBF Networks in Mercury Pollution Spatial Prediction of a Gold Mine Area." Advanced Materials Research 926-930 (May 2014): 2771–76. http://dx.doi.org/10.4028/www.scientific.net/amr.926-930.2771.

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This paper adopts the Radial Basis Function (RBF) Neural Networks to conduct a spatial prediction on the mercury pollution situation of the Jiapigou gold mine area, locate the primary pollution sources, delineate the pollution area according to the mercury concentration data of 27 soil samples from this area, and draws the mercury concentration isoline with the gridded data. Compared with the methods in the past such as classical statistics and BP Neural Networks to analyse the soil pollution, this method presents advantages such as the quantification of the result, the explicitness of the pollution area, and the ability to explain the blind area of the samples.

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Bravo, Guillermo, Paulina Vega-Celedón, Juan Carlos Gentina, and Michael Seeger. "Bioremediation by Cupriavidus metallidurans Strain MSR33 of Mercury-Polluted Agricultural Soil in a Rotary Drum Bioreactor and Its Effects on Nitrogen Cycle Microorganisms." Microorganisms 8, no. 12 (December 9, 2020): 1952. http://dx.doi.org/10.3390/microorganisms8121952.

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Nitrogen cycle microorganisms are essential in agricultural soils and may be affected by mercury pollution. The aims of this study are to evaluate the bioremediation of mercury-polluted agricultural soil using Cupriavidus metallidurans MSR33 in a rotary drum bioreactor (RDB) and to characterize the effects of mercury pollution and bioremediation on nitrogen cycle microorganisms. An agricultural soil was contaminated with mercury (II) (20–30 ppm) and subjected to bioremediation using strain MSR33 in a custom-made RDB. The effects of mercury and bioremediation on nitrogen cycle microorganisms were studied by qPCR. Bioremediation in the RDB removed 82% mercury. MSR33 cell concentrations, thioglycolate, and mercury concentrations influence mercury removal. Mercury pollution strongly decreased nitrogen-fixing and nitrifying bacterial communities in agricultural soils. Notably, after soil bioremediation process nitrogen-fixing and nitrifying bacteria significantly increased. Diverse mercury-tolerant strains were isolated from the bioremediated soil. The isolates Glutamicibacter sp. SB1a, Brevundimonas sp. SB3b, and Ochrobactrum sp. SB4b possessed the merG gene associated with the plasmid pTP6, suggesting the horizontal transfer of this plasmid to native gram-positive and gram-negative bacteria. Bioremediation by strain MSR33 in an RDB is an attractive and innovative technology for the clean-up of mercury-polluted agricultural soils and the recovery of nitrogen cycle microbial communities.

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Yang, Tie Jun, Liang Ke, Wei Huang, Dao Zhu Hua, Chang Jin Pan, and Hua Jun Ye. "Research on Performance of a Mercury Continuous Emission Monitoring System." Applied Mechanics and Materials 341-342 (July 2013): 589–92. http://dx.doi.org/10.4028/www.scientific.net/amm.341-342.589.

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The environmental pollution caused by coal-fired mercury emission has received worldwide attention, because of hazards for human health. Its significant to monitor mercury emission accurately in flue gas for mercury pollution control. In this paper, a detailed description of a mercury continuous emission monitoring system (Hg CEMS) built for the detection of mercury in flue gas is presented. The key performance parameters of the Hg CEMS were discussed in detail. The Hg CEMS was installed in a power plant to monitor mercury emission in flue gas continuously. Results from a series of laboratory performance tests and field application prove that the Hg CEMS is reliable and capable for mercury detection in flue gas. The Hg CEMS can meet the requirement of mercury monitoring in China well.

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Yasutake, Akira, Jin Ping Cheng, Masako Kiyono, Shimpei Uraguchi, Xiaojie Liu, Kyoko Miura, Yoshiaki Yasuda, and Nikolay Mashyanov. "Rapid Monitoring of Mercury in Air from an Organic Chemical Factory in China Using a Portable Mercury Analyzer." Scientific World JOURNAL 11 (2011): 1630–40. http://dx.doi.org/10.1100/2011/493207.

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A chemical factory, using a production technology of acetaldehyde with mercury catalysis, was located southeast of Qingzhen City in Guizhou Province, China. Previous research showed heavy mercury pollution through an extensive downstream area. A current investigation of the mercury distribution in ambient air, soils, and plants suggests that mobile mercury species in soils created elevated mercury concentrations in ambient air and vegetation. Mercury concentrations of up to 600 ng/m3in air over the contaminated area provided evidence of the mercury transformation to volatile Hg(0). Mercury analysis of soil and plant samples demonstrated that the mercury concentrations in soil with vaporized and plant-absorbable forms were higher in the southern area, which was closer to the factory. Our results suggest that air monitoring using a portable mercury analyzer can be a convenient and useful method for the rapid detection and mapping of mercury pollution in advanced field surveys.

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Li, Zhongguo, Puqi Jia, Fu Zhao, and Yikun Kang. "Mercury Pollution, Treatment and Solutions in Spent Fluorescent Lamps in Mainland China." International Journal of Environmental Research and Public Health 15, no. 12 (December 6, 2018): 2766. http://dx.doi.org/10.3390/ijerph15122766.

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With the increasing awareness of energy conservation and environmental protection, high energy-consuming incandescent lamps have been largely withdrawn from the stage of mainland China’s lighting industry because the main raw material for electricity production-coal-produces mercury pollution when burned and energy-saving fluorescent lamps have made considerable progress. However, fluorescent lamps emit mercury, which still causes environmental pollution. In this work, the existing problems in the development of fluorescent lamps, and in the collection and treatment of spent fluorescent lamps were analyzed. The contributions of various external factors to the above problems were evaluated based on fuzzy theory. Finally, solutions to control the pollution of mercury from fluorescent lamps and spent fluorescent lamps were proposed. Results show that the biggest problem that causes mercury pollution is the first among three factors: energy conservation and mercury emission from fluorescent lamps and spent fluorescent lamps, spent fluorescent lamp collection and spent fluorescent lamp treatment. The best way to solve these problems is by developing an energy-saving and environment-friendly light emitting diode (LED) industry in mainland China.

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Lomonte, Cristina, Johannes Fritsche, Emilia Bramanti, Augustine Doronila, David Gregory, Alan J. M. Baker, and Spas D. Kolev. "Assessment of the pollution potential of mercury contaminated biosolids." Environmental Chemistry 7, no. 2 (2010): 146. http://dx.doi.org/10.1071/en09105.

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Environmental context. The re-use of biosolids (sewage sludge) is becoming increasingly popular especially for land applications as soil improvers, fertilisers and composts. However, some biosolids are contaminated with toxic heavy metals and mercury is arguably of the highest environmental and public health concern. Studies on mobility, availability and emissions of mercury from biosolids were carried out to assess the biosolids potential for contamination of the environment and to evaluate applicable techniques for a future remediation. Abstract. Biosolids from Melbourne Water’s Western Treatment Plant (WTP) in Australia contain elevated levels of mercury. Consequently, monitoring programs are crucial in order to assess localised impacts to the environment and on humans immediately surrounding the boundaries of the WTP. Dry biosolids were surveyed for Hg, other heavy metals, cations, soluble anions, sulfur and phosphorus. Mercury concentrations were found to vary between 3.5 and 8.4 mg kg–1 Hg, indicating that biosolids from some locations were above the safety level (5 mg kg–1 Hg) for land applications. High concentrations of soluble anions and cations revealed elevated salinity levels. The biosolids with the highest Hg concentration were further studied to assess their potential for Hg remediation. The results obtained by a sequential extraction procedure showed that 59.01% of the total mercury was complexed with organic ligands. In addition, the influence of air temperature, water content and irradiation on the emission of gaseous elemental mercury from biosolids was studied. Light exposure and water addition were the main factors affecting this emission with flux values up to 132 ng m–2 h–1.

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Pacyna, Jozef M., Oleg Travnikov, Francesco De Simone, Ian M. Hedgecock, Kyrre Sundseth, Elisabeth G. Pacyna, Frits Steenhuisen, Nicola Pirrone, John Munthe, and Karin Kindbom. "Current and future levels of mercury atmospheric pollution on a global scale." Atmospheric Chemistry and Physics 16, no. 19 (October 6, 2016): 12495–511. http://dx.doi.org/10.5194/acp-16-12495-2016.

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Abstract. An assessment of current and future emissions, air concentrations, and atmospheric deposition of mercury worldwide is presented on the basis of results obtained during the performance of the EU GMOS (Global Mercury Observation System) project. Emission estimates for mercury were prepared with the main goal of applying them in models to assess current (2013) and future (2035) air concentrations and atmospheric deposition of this contaminant. The combustion of fossil fuels (mainly coal) for energy and heat production in power plants and in industrial and residential boilers, as well as artisanal and small-scale gold mining, is one of the major anthropogenic sources of Hg emissions to the atmosphere at present. These sources account for about 37 and 25 % of the total anthropogenic Hg emissions globally, estimated to be about 2000 t. Emissions in Asian countries, particularly in China and India, dominate the total emissions of Hg. The current estimates of mercury emissions from natural processes (primary mercury emissions and re-emissions), including mercury depletion events, were estimated to be 5207 t year−1, which represents nearly 70 % of the global mercury emission budget. Oceans are the most important sources (36 %), followed by biomass burning (9 %). A comparison of the 2035 anthropogenic emissions estimated for three different scenarios with current anthropogenic emissions indicates a reduction of these emissions in 2035 up to 85 % for the best-case scenario. Two global chemical transport models (GLEMOS and ECHMERIT) have been used for the evaluation of future mercury pollution levels considering future emission scenarios. Projections of future changes in mercury deposition on a global scale simulated by these models for three anthropogenic emissions scenarios of 2035 indicate a decrease in up to 50 % deposition in the Northern Hemisphere and up to 35 % in Southern Hemisphere for the best-case scenario. The EU GMOS project has proved to be a very important research instrument for supporting the scientific justification for the Minamata Convention and monitoring of the implementation of targets of this convention, as well as the EU Mercury Strategy. This project provided the state of the art with regard to the development of the latest emission inventories for mercury, future emission scenarios, dispersion modelling of atmospheric mercury on a global and regional scale, and source–receptor techniques for mercury emission apportionment on a global scale.

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Zhong, Jiawei, Yunpeng Xu, and Zhongmin Liu. "Heterogeneous non-mercury catalysts for acetylene hydrochlorination: progress, challenges, and opportunities." Green Chemistry 20, no. 11 (2018): 2412–27. http://dx.doi.org/10.1039/c8gc00768c.

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The replacement of mercuric chloride with non-mercury catalysts in acetylene hydrochlorination for the production of a vinyl chloride monomer, a precursor to polyvinyl chloride, would meet the requirements of green chemistry and have a great significance in the industrial field.

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Yue, Tao, Fan Wang, Bin Jie Han, Peng Lai Zuo, and Fan Zhang. "Analysis on Mercury Emission and Control Technology of Typical Industries in China." Applied Mechanics and Materials 295-298 (February 2013): 859–71. http://dx.doi.org/10.4028/www.scientific.net/amm.295-298.859.

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The mercury emission characteristics of coal-fired power plant boilers, industrial boilers, cement kilns, and sintering of iron and steel industry were studied in this paper. The reducing effect of mercury emissions by pollution control technology was analyzed. The EPA standard method was used to measure the mercury concentration of the pollution sources. For coal-fired boilers, the mercury removal efficiency of the existing electrostatic precipitator and wet FGD is up to 60%-70%, and the mercury concentration in the flue gas is below the standard 30μg/Nm3. The main mercury emissions of cement industries are at the kiln outlet, the mercury concentration of which is 2.5 to 5.4 times that of the kiln inlet. For the iron and steel industry, the mercury concentration of the exhausting gas after dust removal and desulfurization can not meet the emission limits and need to be further controlled. The research did in the paper made a scientific basis for the improvement of atmospheric mercury emission inventory and the mercury control.

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Wiener, James G., and Pamela J. Shields. "Mercury in the Sudbury River (Massachusetts, U.S.A.): pollution history and a synthesis of recent research." Canadian Journal of Fisheries and Aquatic Sciences 57, no. 5 (May 1, 2000): 1053–61. http://dx.doi.org/10.1139/f00-039.

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We review the transport, fate, and bioavailability of mercury in the Sudbury River, topics addressed in the following five papers. Mercury entered the river from an industrial complex (site) that operated from 1917 to 1978. Rates of mercury accumulation in sediment cores from two reservoirs just downstream from the site decreased soon after industrial operations ended and have decreased further since capping of contaminated soils at the site in 1991. The reservoirs contained the most contaminated sediments (some exceeding 50 μg Hg·g dry weight-1) and were depositional sinks for total mercury. Methyl mercury concentrations in biota did not parallel concentrations of total mercury in the sediments to which organisms were exposed, experimentally or as residents. Contaminated wetlands within the floodplain about 25 km downstream from the site produced and exported methyl mercury from inorganic mercury that had originated from the site. Natural burial processes have gradually decreased the quantity of sedimentary mercury available for methylation within the reservoirs, whereas mercury in the lesser contaminated wetlands farther downstream has remained more available for transport, methylation, and entry into food webs.

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Journal articles on the topic 'Mercury pollution'

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