Proof of concept for a passive sampler for monitoring of gaseous elemental mercury in artisanal gold mining
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNIFESP |
Texto Completo: | https://repositorio.unifesp.br/handle/11600/58162 http://dx.doi.org/10.1038/s41598-017-16713-7 |
Resumo: | Mercury emissions from artisanal gold mining operations occurring in roughly 80 developing countries are a major workplace health hazard for millions of people as well as the largest contributor to global mercury pollution. There are no portable, cheap, and rapid methods able to inform workers or health practitioners of mercury exposure on site in remote locations. In this work, a proof of concept for a miniaturized mercury sampler, prepared by the direct reduction of gold into the porous nanostructures of Vycor glass (PVG), is introduced. Mercury retention on the PVG/Au sampler induces significant color changes, due to the formation of Au-Hg amalgam that affects the surface plasmon resonance characteristics of the material. The color change can potentially be quantified by the analysis of pictures obtained with a cell phone camera rapidly and onsite. Laboratory experiments showed the viability of using PVG/Au as passive sampler for monitoring of Hg degrees. PVG/Au samplers were then deployed in an artisanal and small-scale gold mining (ASGM) operations in Burkina Faso and it was able to indicate personal mercury exposures. The amount of mercury quantified in the samplers for all miners was higher than the current personal exposure limit set by the US Occupational Safety & Health Administration (OSHA). |
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Santos, Elias de Barros [UNIFESP]Moher, PaleahFerlin, StacyFostier, Anne HeleneMazali, Italo OdoneTelmer, KevinBrolo, Alexandre Guimaraes2020-09-01T13:21:16Z2020-09-01T13:21:16Z2017Scientific Reports. London, v. 7, p. -, 2017.2045-2322https://repositorio.unifesp.br/handle/11600/58162http://dx.doi.org/10.1038/s41598-017-16713-7WOS000416398100063.pdf10.1038/s41598-017-16713-7WOS:000416398100063Mercury emissions from artisanal gold mining operations occurring in roughly 80 developing countries are a major workplace health hazard for millions of people as well as the largest contributor to global mercury pollution. There are no portable, cheap, and rapid methods able to inform workers or health practitioners of mercury exposure on site in remote locations. In this work, a proof of concept for a miniaturized mercury sampler, prepared by the direct reduction of gold into the porous nanostructures of Vycor glass (PVG), is introduced. Mercury retention on the PVG/Au sampler induces significant color changes, due to the formation of Au-Hg amalgam that affects the surface plasmon resonance characteristics of the material. The color change can potentially be quantified by the analysis of pictures obtained with a cell phone camera rapidly and onsite. Laboratory experiments showed the viability of using PVG/Au as passive sampler for monitoring of Hg degrees. PVG/Au samplers were then deployed in an artisanal and small-scale gold mining (ASGM) operations in Burkina Faso and it was able to indicate personal mercury exposures. The amount of mercury quantified in the samplers for all miners was higher than the current personal exposure limit set by the US Occupational Safety & Health Administration (OSHA).FAPESPNSERCUnited States Department of State (USDoS)United Nations Industrial Development Organization (UNIDO)post-doctoral fellowship from CNPq (Science Without Borders)post-doctoral fellowship from CIHRArtisanal Gold CouncilMinistry of the EnvironmentMinistry of MinesMinistry of Health of Burkina FasoUniv Fed Sao Paulo, Inst Sci & Technol, BR-12231280 Sao Jose Dos Campos, SP, BrazilUniv Victoria, Dept Chem, POB 3055, Victoria, BC V8W 3V6, CanadaUniv Victoria, Dept Geog, Victoria, BC V8W 3P2, CanadaArtisanal Gold Council, C100-633 Courtney St, Victoria, BC V8W 1B9, CanadaUniv Estadual Campinas, Inst Chem, POB 6154, BR-13081970 Campinas, SP, BrazilUniv Estadual Campinas, Inst Chem, Funct Mat Lab, POB 6154, BR-13083970 Campinas, SP, BrazilUniv Fed Sao Paulo, Inst Sci & Technol, BR-12231280 Sao Jose Dos Campos, SP, BrazilFAPESP: 2016/03559-7FAPESP: 2013/22127-2FAPESP: 2014/50906-9United States Department of State (USDoS): S-LMAQM-15-GR-1178United Nations Industrial Development Organization (UNIDO): GF/RAF/12/001Web of Science-engNature Publishing GroupScientific ReportsProof of concept for a passive sampler for monitoring of gaseous elemental mercury in artisanal gold mininginfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleLondon7info:eu-repo/semantics/openAccessreponame:Repositório Institucional da UNIFESPinstname:Universidade Federal de São Paulo (UNIFESP)instacron:UNIFESPORIGINALWOS000416398100063.pdfapplication/pdf2027003${dspace.ui.url}/bitstream/11600/58162/1/WOS000416398100063.pdf8e13ad1f71f90c52d700c8e6472f32cbMD51open accessTEXTWOS000416398100063.pdf.txtWOS000416398100063.pdf.txtExtracted texttext/plain41328${dspace.ui.url}/bitstream/11600/58162/8/WOS000416398100063.pdf.txt7ba1a444a5ee92995c68d3ff9ecb81acMD58open accessTHUMBNAILWOS000416398100063.pdf.jpgWOS000416398100063.pdf.jpgIM Thumbnailimage/jpeg7491${dspace.ui.url}/bitstream/11600/58162/10/WOS000416398100063.pdf.jpgfe662f89e661604ec531e153f0a83b0dMD510open access11600/581622023-06-05 19:06:32.57open accessoai:repositorio.unifesp.br:11600/58162Repositório InstitucionalPUBhttp://www.repositorio.unifesp.br/oai/requestopendoar:34652023-06-05T22:06:32Repositório Institucional da UNIFESP - Universidade Federal de São Paulo (UNIFESP)false |
dc.title.en.fl_str_mv |
Proof of concept for a passive sampler for monitoring of gaseous elemental mercury in artisanal gold mining |
title |
Proof of concept for a passive sampler for monitoring of gaseous elemental mercury in artisanal gold mining |
spellingShingle |
Proof of concept for a passive sampler for monitoring of gaseous elemental mercury in artisanal gold mining Santos, Elias de Barros [UNIFESP] |
title_short |
Proof of concept for a passive sampler for monitoring of gaseous elemental mercury in artisanal gold mining |
title_full |
Proof of concept for a passive sampler for monitoring of gaseous elemental mercury in artisanal gold mining |
title_fullStr |
Proof of concept for a passive sampler for monitoring of gaseous elemental mercury in artisanal gold mining |
title_full_unstemmed |
Proof of concept for a passive sampler for monitoring of gaseous elemental mercury in artisanal gold mining |
title_sort |
Proof of concept for a passive sampler for monitoring of gaseous elemental mercury in artisanal gold mining |
author |
Santos, Elias de Barros [UNIFESP] |
author_facet |
Santos, Elias de Barros [UNIFESP] Moher, Paleah Ferlin, Stacy Fostier, Anne Helene Mazali, Italo Odone Telmer, Kevin Brolo, Alexandre Guimaraes |
author_role |
author |
author2 |
Moher, Paleah Ferlin, Stacy Fostier, Anne Helene Mazali, Italo Odone Telmer, Kevin Brolo, Alexandre Guimaraes |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Santos, Elias de Barros [UNIFESP] Moher, Paleah Ferlin, Stacy Fostier, Anne Helene Mazali, Italo Odone Telmer, Kevin Brolo, Alexandre Guimaraes |
description |
Mercury emissions from artisanal gold mining operations occurring in roughly 80 developing countries are a major workplace health hazard for millions of people as well as the largest contributor to global mercury pollution. There are no portable, cheap, and rapid methods able to inform workers or health practitioners of mercury exposure on site in remote locations. In this work, a proof of concept for a miniaturized mercury sampler, prepared by the direct reduction of gold into the porous nanostructures of Vycor glass (PVG), is introduced. Mercury retention on the PVG/Au sampler induces significant color changes, due to the formation of Au-Hg amalgam that affects the surface plasmon resonance characteristics of the material. The color change can potentially be quantified by the analysis of pictures obtained with a cell phone camera rapidly and onsite. Laboratory experiments showed the viability of using PVG/Au as passive sampler for monitoring of Hg degrees. PVG/Au samplers were then deployed in an artisanal and small-scale gold mining (ASGM) operations in Burkina Faso and it was able to indicate personal mercury exposures. The amount of mercury quantified in the samplers for all miners was higher than the current personal exposure limit set by the US Occupational Safety & Health Administration (OSHA). |
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2017 |
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2017 |
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2020-09-01T13:21:16Z |
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2020-09-01T13:21:16Z |
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Scientific Reports. London, v. 7, p. -, 2017. |
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https://repositorio.unifesp.br/handle/11600/58162 http://dx.doi.org/10.1038/s41598-017-16713-7 |
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2045-2322 |
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WOS000416398100063.pdf |
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10.1038/s41598-017-16713-7 |
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WOS:000416398100063 |
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Scientific Reports. London, v. 7, p. -, 2017. 2045-2322 WOS000416398100063.pdf 10.1038/s41598-017-16713-7 WOS:000416398100063 |
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https://repositorio.unifesp.br/handle/11600/58162 http://dx.doi.org/10.1038/s41598-017-16713-7 |
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