Identification of mercury species in minerals with different matrices and impurities by thermal desorption technique
- 48 Downloads
Because of its low concentration, its unique physico-chemical properties and the analytical difficulties associated with its measurement, the determination of mercury species in solids is not an easy task. Thermal desorption (HgTPD) is an attractive option for the identification of mercury species in solids due to its simplicity and accessibility. However, there are still issues that need to be solved for it to reach its full potential. One such issue is the availability of reference materials that will reproduce real mercury associations. The novelty of this study is the use of six uncommon mercury minerals, taken from around the world, and a sphalerite sample to expand the data base of reference materials for mercury speciation by thermal desorption at programmed temperature. In addition, by using such materials, a number of matrix effects can be ascertained. Different mercury associations were identified depending on the temperature of desorption, thereby validating the thermal desorption as a reliable technique for mercury speciation in solid samples and as a consequence improving the knowledge of the geochemistry of mercury in the environment.
KeywordsMercury Minerals Thermal desorption Speciation Geochemistry
The authors acknowledge the financial assistance received under project GRUPIN14-031 and thank the Spanish Ministry of Economy and Competitiveness for awarding a “Ramón y Cajal” postdoctoral contract (RYC-2013-12596) to M.A. López-Antón.
- Angel RJ, Gressey G, Criddle A (1990) Edgarbaileyite, Hg6Si2O7: the crystal structure of the first mercury silicate. Am Mineral 75:1192–1196Google Scholar
- Bloom NS, Vondergeest V, Preus E (2002) Intercomparison of four methods for the determination of total mercury in recalcitrant solids. Annual meeting of SETAC Europe, 347–348, ViennaGoogle Scholar
- Bloom NS, Preus E, Katon J, Hiltner M (2003) Selective extractions to assess the biogeochemically relevant fractionation of inorganic mercury in sediments and soils. Anal Chim Acta 479:233–248. https://doi.org/10.1016/10.1016/S0003-2670(02)01550-7 CrossRefGoogle Scholar
- Fadda S, Fiori M, Grillo SM (2005) Chemical variations in tetrahedrite - tennantite minerals from the Furtei epithermal Au deposit, Sardinia, Italy: mineral zoning and ore fluids evolution. Geochemistry, Mineralogy and Petrology Bulgarian Academy of Sciences 43:79–84Google Scholar
- Foord EE, Berendsen P, Storey LO (1974) Corderoite, first natural occurrence of Hg3S2Cl2, from the Cordero mercury deposit, Humboldt County, Nevada. Am Mineral 59:652–655Google Scholar
- Jiménez-Moreno M, Barre JPG, Perrot V, Bérail S, Rodríguez Martín-Doimeadios RC, Amouroux D (2016) Sources and fate of mercury pollution in almadén mining district (Spain): evidences from mercury isotopic compositions in sediments and lichens. Chemosphere 147:430–438. https://doi.org/10.1016/j.chemosphere.2015.12.094 CrossRefGoogle Scholar
- Kobal AB, Snoj Tratnik J, Mazej D, Fajon V, Gibičar D, Miklavčič A, Kocman D, Kotnik J, Sešek Briški A, Osredkar J, Krsnik M, Prezelj M, Knap Č, Križaj B, Liang L, Horvat M (2017) Exposure to mercury in susceptible population groups living in the former mercury mining town of Idrija, Slovenia. Environ Res 152:434–445. https://doi.org/10.1016/j.envres.2016.06.037 CrossRefGoogle Scholar
- Kozin LF, Hansen SC, Zakharchenko NF, Gray J (2013) CHAPTER 12 environmental aspects of the industrial application of mercury, in: Mercury handbook: chemistry, applications and environmental impact. The Royal Society of Chemistry, pp. 209–227. https://doi.org/10.1039/9781849735155-00209
- Ozerova NA (1996) Mercury in geological systems, in: Global and regional mercury cycles: sources, fluxes and mass balances. Edited by Willy Baeyens, Ralf Ebinghaus and Oleg Vasiliev. Published by Kluwer Academic Publishers, The Netherlands, pp. 463–474. ISBN-13: 978-94-010-7295-3; D0I: https://doi.org/10.1007/978-94-009-1780-4; e-ISBN-13: 978-94-009-1780-4
- Rumayor M, López-Antón MA, Díaz-Somoano M, Martínez-Tarazona MR (2015b) Device for identification of mercury species in solids. Consejo Superior de Investigaciones Científicas (CSIC). Patent ES1641.1031 Application number: P201530310Google Scholar
- WHO (2017) World Health Organization. http://www.who.int/news-room/fact-sheets/detail/mercury-and-health