School of Biology, The University of Newcastle upon Tyne, NE1 7RU, England, UK.
Environ Pollut. 2013 Jul;178:89-96. doi: 10.1016/j.envpol.2013.03.007. Epub 2013 Mar 30.
Although a great deal is known about the deposition of fluoride on vegetation, and the hazards associated with uptake by grazing herbivores, little is known about what happens to the concentration of fluoride in vegetation and soil at polluted sites once deposition ceases. The closure of Anglesey Aluminium Metals Ltd smelter, in September 2009, provided a unique opportunity to study fluoride loading once deposition stopped. Fluoride was monitored in plants and soil within 1 km of the former emission source. Fluoride concentrations in a range of plant material had decreased to background levels of 10 mg F kg(-1) after 36 weeks. Concentrations of fluoride in mineral-rich soils decreased steadily demonstrating their limited potential to act as contaminating sources of fluoride for forage uptake. There were significant differences in the rate of decline of fluoride concentrations between plant species.
尽管人们对氟化物在植被上的沉积以及食草动物摄取氟化物带来的危害有了很多了解，但对于污染地点的植被和土壤中氟化物浓度在沉积停止后会发生什么，人们知之甚少。2009 年 9 月，安格尔西岛铝金属有限公司冶炼厂关闭，为研究沉积停止后氟化物的负荷提供了一个独特的机会。在距离前排放源 1 公里范围内的植物和土壤中监测了氟化物。36 周后，一系列植物材料中的氟化物浓度已降至 10 毫克 F 千克(-1)的背景水平。富矿土壤中的氟化物浓度持续稳定下降，表明它们作为牧草摄取氟化物的污染源的潜力有限。不同植物物种中氟化物浓度下降的速度存在显著差异。
