This study investigated the environmental impact of the operation of lignite‐fired power plants in Yunnan Province. Soil, water, vegetable plant, and bottom ash samples were collected from around three lignite‐fired power plants in the area and the contamination levels of Cr, Cu, U, Mn, Cd, Ba, Pb, Sb, Co, and Ni in the samples were measured by inductively coupled plasma‐mass spectrometry (ICP‐MS). These results showed the pollutants contents in the soils taken from around the three plants were similar. Ba, Mn, and Sb had the highest concentrations of 15492, 2417, and 281 mg/kg respectively, and rapidly migrated from ash to soil. The contents of the metals in four common vegetable plants grown in the area (pine, smilax, Artemisia apiacea, duchesnea) were also measured and found to be substantially less than those in the soils and ashes. The heavy metal concentrations in the plants and water were below the standard level. The running of the power plant thus only had negative impacts on the ambient soils, especially Ba and Mn pollution.

中文翻译：

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褐煤发电厂烟灰堆附近的水，土壤和蔬菜中的重金属分布

这项研究调查了云南省褐煤电厂运行对环境的影响。从该地区约三座褐煤发电厂收集了土壤，水，蔬菜植物和底灰的样品，以及该地区Cr，Cu，U，Mn，Cd，Ba，Pb，Sb，Co和Ni的污染水平。样品通过电感耦合等离子体质谱法（ICP-MS）测量。这些结果表明，从三株植物周围采集的土壤中的污染物含量相似。Ba，Mn和Sb的最高浓度分别为15492、2417和281 mg / kg，并迅速从灰分迁移到土壤。还测量了该地区生长的四种常见蔬菜植物（松树，，青蒿，duchesnea）中的金属含量，发现其含量明显低于土壤和灰烬中的含量。植物和水中的重金属浓度低于标准水平。因此，发电厂的运行仅对周围土壤产生负面影响，尤其是Ba和Mn污染。