Mercury atmospheric emission, deposition and isotopic fingerprinting from major coal-fired power plants in Australia: Insights from palaeo-environmental analysis from sediment cores
نویسندگان
چکیده
Despite Australia's high reliance on coal for electricity generation, no study has addressed the extent to which mercury (Hg) deposition increased since commissioning of coal-fired power plants. We present stratigraphic data from lake sediments in Hunter Valley (New South Wales) and Latrobe (Victoria), where a significant proportion is generated via combustion. Mercury 1970s with plants, by factor 2.9-times Lake Glenbawn (Hunter Valley) 14-times Traralgon Reservoir (Latrobe Valley). Sediments deposited after plants have distinct Hg isotope compositions, similar those combusted coals. emission, estimated using an atmospheric model (CALPUFF), was higher than Valley. This result concentrations lignite coal, lax regulation older pollution-control technologies adopted Near-source Australia significantly North America Europe, better emission controls (e.g. wet flue gas desulfurization) been effect decades. The challenge years come will be ratify Minamata Convention develop policies reduce emissions.
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ژورنال
عنوان ژورنال: Environmental Pollution
سال: 2021
ISSN: ['1873-6424', '0269-7491']
DOI: https://doi.org/10.1016/j.envpol.2021.117596