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| general:trends:emission_trends_heavy_metals [2023/03/15 13:23] – [Main drivers] kotzulla | general:trends:emission_trends_heavy_metals [2023/03/15 14:33] – [Trends] kotzulla | ||
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| 2019 and 2020 emissions saw a substantial reduction trend for most heavy metals. | 2019 and 2020 emissions saw a substantial reduction trend for most heavy metals. | ||
| - | The main sources | + | The main source |
| - | Energy Industries (NFR 1.A.1) and Industrial Processes (NFR 2) like Metal Industries (NFR 2.C) emit the majority of arsenic, cadmium, chrome, lead, mercury and nickel. | + | **Energy Industries (NFR 1.A.1)** and **Industrial Processes (NFR 2)**, especially, of course, the Metal Industries (NFR 2.C) emit the majority of **arsenic, cadmium, chrome, lead, mercury and nickel**. |
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| + | In contrast, **copper and zinc** emissions are mostly governed by the **Transport (NFR 1.A.3)** sector, resulting mostly from brake and tyre wear. Thus, trends are connected directly with the annual mileage. | ||
| - | In contrast, copper and zinc emissions are mostly governed by the Transport (NFR 1.A.3) | + | **Selenium** on the other hand originates mainly from **Mineral Industry (NFR 2.A)** and to a lesser degree from Transport (NFR 1.A.3). |
| - | Selenium on the other hand originates mainly from Mineral Industry (NFR 2.A) and to a lesser degree from Transport (NFR 1.A.3). | + | Other sources are still to be investigated but generally expected to add little to the total trend. |
| ===== Trends ===== | ===== Trends ===== | ||
| The figure below shows emission trends for heavy metals: | The figure below shows emission trends for heavy metals: | ||
| - | [{{ : | + | {{ : |