A New Low-Cost and Reliable Method to Evaluate the Release of Hg0 from Synthetic Materials
| Autor: | Marta Lazzaroni, Orlando Vaselli, Daniele Rappuoli, Barbara Nisi, Jacopo Cabassi |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
chemistry.chemical_element
Bioengineering 010501 environmental sciences 010502 geochemistry & geophysics gaseous mercury lcsh:Chemical technology 01 natural sciences Synthetic materials lcsh:Chemistry Adsorption mining areas Chemical Engineering (miscellaneous) Rather poor lcsh:TP1-1185 Leachate 0105 earth and related environmental sciences Waste management synthetic materials Process Chemistry and Technology Lumex® RA-915M Elemental mercury Mercury (element) Abbadia San Salvatore Cinnabar chemistry Demolition waste lcsh:QD1-999 Environmental science |
| Zdroj: | Processes, Vol 8, Iss 1282, p 1282 (2020) Processes Volume 8 Issue 10 |
| ISSN: | 2227-9717 |
| Popis: | Mercury is a toxic and noxious element and is the only metal that naturally occurs as gas. One of the most challenging topics (included in the United Nations Minimata convention) is to understand the adsorption&ndash release processes of manmade materials (e.g., concrete, bricks, tiles, painting). Adsorption of Hg by construction and demolition waste materials has recently been studied, but investigations on how much Hg0 can be released from these products are rather poor. The abandoned mining site of Abbadia San Salvatore (Siena, central Italy) where, for about one century, cinnabar was roasted to produce liquid mercury, is known for the high concentrations of (i) Hg0 in edifices and structures and (ii) total and leachate Hg in synthetic materials. In the present paper, a new, simple and low-cost method to measure the amount of GEM (Gaseous Elemental Mercury) released from anthropic materials (concrete, wall rocks, and tiles) located in the Hg0-rich environments of the former mining site, is proposed. The efficiency of a specific paint that was supposed to act as blocking agent to Hg0 was also tested. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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