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A compilation of field surveys on gaseous elemental mercury (gem) from contrasting environmental settings in europe, south america, south africa, and china: separating fads from facts.

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dc.contributor.author Adams, Melitón es_ES
dc.contributor.author Esbri Víctor, José María es_ES
dc.contributor.author Ryzov, Vladimir es_ES
dc.contributor.author Panichev, Nikolai es_ES
dc.contributor.author Huremovi, Jasna es_ES
dc.contributor.author Higueras Higueras, Pablo León es_ES
dc.contributor.author Vaseli, Orlando es_ES
dc.contributor.author García García, María Eugenia es_ES
dc.contributor.author Fu, Xuewu es_ES
dc.contributor.author Loredo Pérez, Jorge es_ES
dc.contributor.author Alfonso Abella, María Pura es_ES
dc.contributor.author Oyarzun Muñoz, Jorge es_ES
dc.contributor.author Giammanco, Salvatore es_ES
dc.contributor.author Maturana Contardo, Hugo es_ES
dc.contributor.author Horvat, Milena es_ES
dc.contributor.author Spiric, Zcroc es_ES
dc.contributor.author Contreras, Felicia es_ES
dc.contributor.author Martínez Coronado, Alba es_ES
dc.contributor.author López Berdonces, Miguel Ángel es_ES
dc.contributor.author Mashyanov, Nikolay es_ES
dc.contributor.author Mckrindle, Robert es_ES
dc.contributor.author Feng, Xinbin es_ES
dc.contributor.author Villegas, Karla S. es_ES
dc.contributor.author Niecenski, Luise F es_ES
dc.contributor.author Llanos Lazcano, Willans es_ES
dc.contributor.author Palacios Ubach, Silvia es_ES
dc.contributor.author Oyarzun Muñoz, Roberto es_ES
dc.contributor.author Nisi, Barbara es_ES
dc.contributor.author Lillo Ramos, Francisco Javier es_ES
dc.contributor.author Ribeiro Guevara, Sergio es_ES
dc.contributor.author Kotnik, Joze es_ES
dc.date.accessioned 2014-06-24T06:10:16Z
dc.date.available 2014-06-24T06:10:16Z
dc.date.issued 2014 es_ES
dc.identifier.citation Environmental geochemistry and health, 2014, 36: 713-734 es_ES
dc.identifier.uri http://hdl.handle.net/10578/3915
dc.description.abstract Mercury is transported globally in the atmosphere mostly in gaseous elemental form (GEM, Hg0gas), but still few worldwide studies taking into account different and contrasted environmental settings are available in a single publication. This work presents and discusses data from Argentina, Bolivia, Bosnia and Herzegovina, Brazil, Chile, China, Croatia, Finland, Italy, Russia, South Africa, Spain, Slovenia and Venezuela. We classified the information in four groups: (1) mining districts where this contaminant poses or has posed a risk for human populations and/or ecosystems; (2) cities, where the concentration of atmospheric mercury could be higher than normal due to the burning of fossil fuels and industrial activities; (3) areas with natural emissions from volcanoes; and (4) pristine areas where no anthropogenic influence was apparent. All the surveys were performed using portable LUMEX RA-915 series atomic absorption spectrometers. The results for cities fall within a low GEM concentration range that rarely exceeds 30 ng m-3, that is, 6.6 times lower than the restrictive ATSDR threshold (200 ng m-3) for chronic exposure to this pollutant. We also observed this behavior in the former mercury mining districts, where few data were above 200 ng m-3.We noted that high concentrations of GEM are localized phenomena that fade away in short distances. However, this does not imply that they do not pose a risk for those working in close proximity to the source. This is the case of the artisanal gold miners that heat the Au?Hg amalgam to vaporize mercury. In this respect, while GEM can be truly regarded as a hazard, because of possible physical?chemical transformations into other species, it is only under these localized conditions, implying exposure to high GEM concentrations, which it becomes a direct risk for humans. es_ES
dc.format text/plain en_US
dc.language.iso es en_US
dc.rights info:eu-repo/semantics/openAccess en_US
dc.subject Ciencias de la tierra es_ES
dc.subject Protección del medio ambiente es_ES
dc.title A compilation of field surveys on gaseous elemental mercury (gem) from contrasting environmental settings in europe, south america, south africa, and china: separating fads from facts. es_ES
dc.type info:eu-repo/semantics/article en_US


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