Simulated effects of tropospheric emissions on the global antimony cycle |
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| Affiliation: | 1. Institute of Mineral Resources, China Academy of Geology Sciences, Beijing 100037, China;2. China University of Geosciences, Wuhan 430074, China;3. Centre for Exploration Targeting, Centre of Excellence for Core to Crust Fluid Systems, University of Western Australia, 35 Stirling Highway, Crawley, Western Australia 6009, Perth, Australia;1. Key Laboratory of Deep-Earth Dynamics of Ministry of Land and Resources, Institute of Geology, Chinese Academy of Geological Sciences, Beijing, 100037, China;2. GeoZentrum Nordbayern, Universität Erlangen-Nürnberg, Schlossgarten 5a, 91054 Erlangen, Germany |
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| Abstract: | A novel steady-state model, based on an eight-reservoir geochemical cycle, is presented for Sb. From this, the time-dependent effects of increasing industrial Sb emissions have been examined by computer simulation. Coal combustion has the largest impact, raising the tropospheric burden by 160% between 1800 AD and 2140 AD. However, the present-day Sb burden was not predicted by the simulations, suggesting that a large vapour-phase source, possibly from low-temperature mobilization, has not been identified experimentally. Small variations in the deposition velocity of pollutant Sb in the simulations had little effect on short-range transport, but a dramatic effect on the long-range transport of this element. |
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