| 何茂粉,张成丽.新密市矿区铊含量分析及其环境风险评价[J].有色金属材料与工程,2019,40(5):32-37. |
| 新密市矿区铊含量分析及其环境风险评价 |
| Thallium Content Analysis in Xinmi Mine Area and Its Environmental Risk Assessment |
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| DOI：10.13258/j.cnki.nmme.2019.05.006 |
| 中文关键词: 铊 新密市矿区 环境污染 环境风险评价 |
| 英文关键词:thallium Xinmi mine area environmental pollution environmental risk assessment |
| 基金项目:国家自然科学青年基金资助项目（41601522） |
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| 摘要点击次数: 1773 |
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| 中文摘要: |
| 对新密市典型矿区周围耕地土壤和农作物进行了实地调查和采样，并使用电感耦合等离子体质谱仪对其土壤以及玉米中的铊（Tl）含量进行分析检测。结果显示，新密市煤矿区土壤样品中Tl含量为0.333 0～0.517 3 mg·kg-1，与新密市土壤样品中Tl含量背景值0.420 0 mg·kg-1相比，采样点Tl含量超标个数占80.65%，与全国潮土土壤样品中Tl含量0.570 0 mg·kg-1相比未见超标。玉米中不同部位Tl含量不同，其中玉米植株中Tl含量根 > 须 > 叶 > 茎。利用Hakanson潜在生态危害指数法分析新密市矿区土壤中Tl污染的风险等级。分析结果显示，Tl含量的潜在生态风险参数最大值为49.266 7，最小值为31.714 3，污染物评价等级处于低水平的样点占19.35%，处于中度水平的样点占80.65%。新密市煤矿区Tl污染程度整体上相对较低。 |
| 英文摘要: |
| Field investigation and sampling were carried out on the cultivated soil and crops around the typical mine area of Xinmi Town. The content of thallium (Tl) in the soil and maize was analyzed by inductively coupled plasma mass spectrometer (ICP-MS). The results show that the Tl content in the soil samples of Xinmi coal mine is 0.333 0 to 0.517 3 mg·kg−1. Compared with the Tl content background value of 0.420 0 mg·kg−1 in Xinmi soil samples, the over standard number of sampling sites is 80.65%. Compared with the thallium content of 0.570 0 mg·kg-1 in national soil samples, the over-standard of the soil samples is not exceeded. The Tl content is different in different parts of maize, which is root > whisker > leaf > stem in maize plant. The risk level of Tl pollution in the soil of Xinmi mine area was analyzed by Hakanson potential ecological hazard index method. The results show that the maximum value of the potential ecological risk parameter of Tl content is 49.266 7, the minimum value is 31.714 3, 19.35% of the sample points are in the low level, and 80.65% of the sample points are in the middle level. Generally, the Tl pollution in Xinmi mine area is relatively low. |
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