| 固体聚合膜电解浓集法测量天然水中低含量氚的化学淬灭效应研究 |
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| 引用本文： | 蓝高勇,王华,俞建国,应启和,唐伟,杨会.固体聚合膜电解浓集法测量天然水中低含量氚的化学淬灭效应研究[J].岩矿测试,2016,35(4):415-419. |
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| 作者姓名： | 蓝高勇 王华 俞建国 应启和 唐伟 杨会 |
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| 作者单位： | 内蒙古科技大学能源与环境学院, 内蒙古自治区 包头 014010,内蒙古科技大学能源与环境学院, 内蒙古自治区 包头 014010,内蒙古科技大学能源与环境学院, 内蒙古自治区 包头 014010,内蒙古科技大学能源与环境学院, 内蒙古自治区 包头 014010,内蒙古科技大学能源与环境学院, 内蒙古自治区 包头 014010,包头市辐射环境管理处, 内蒙古自治区 包头 014010 |
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| 基金项目： | 内蒙古自治区自然科学基金资助项目（2015MS0408） |
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| 摘 要： | 固体聚合膜电解浓集法是浓缩氚含量较低(1 Bq/m~3)的天然水样的常用方法,但因水样自身含有杂质离子或电解装置聚合膜带入杂质进入浓集液,使浓集液偏酸性,在测量过程中易产生化学淬灭效应,导致氚的测量值偏低。本文研究了水样自身存在的杂质离子和聚合膜上残留的杂质离子、样品溶液的pH值及其电导率所产生的化学淬灭效应的影响,实验表明,为减少化学淬灭效应,提高测量低含量氚的准确性,需保证水样溶液呈中性,电导率≤1μS/cm,同时避免杂质沉积在聚合膜上。如果水样溶液的pH值偏酸性、电导率大于1μS/cm,可采用酸碱混合型离子交换树脂去除水样中自身的杂质;对于聚合膜引入的杂质,可在电解后的水样中加入微量氨水将其pH值调节至中性。
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| 关 键 词： | 典型工业区 重金属 污染评价 来源分析 包头市 |
| 收稿时间： | 2015/9/28 0:00:00 |
| 修稿时间： | 2016/7/15 0:00:00 |
Influence on the Chemistry Quenching of Low Level Tritium in Natural Water by the Solid Polymer Electrolysis Enrichment Method |
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| LAN Gao-yong,WANG Hu,YU Jian-guo,YING Qi-he,TANG Wei and YANG Hui.Influence on the Chemistry Quenching of Low Level Tritium in Natural Water by the Solid Polymer Electrolysis Enrichment Method[J].Rock and Mineral Analysis,2016,35(4):415-419. |
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| Authors: | LAN Gao-yong WANG Hu YU Jian-guo YING Qi-he TANG Wei and YANG Hui |
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| Institution: | School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou 014010, China,School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou 014010, China,School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou 014010, China,School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou 014010, China,School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou 014010, China and Baotou Radiation Environment Management, Baotou 014010, China |
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| Abstract: | In this paper,soil samples collected from Baotou industrial areas, were analyzed by Relativity analysis and the environmental impacts of heavy metals (Cu, Zn, Pb, Cr, Cd, Mn and Ni) were assessed by the method of index of Nemerow comprehensive pollution and Hakanson''s ecological risk. The results showed that the seven kinds of heavy metal contents in the surface soils exceeded the Inner Mongolia soil background contents. The contents of Cd, Mn,Ni in soil were 100% and Cu, Pb, Zn, Cr excessive rates were 97%, 93%, 93%, 53%. The assessment results of the single factor pollution index of heavy metal pollution indicated that the pollution degree of single element showed the order of Cd > Pb > Cu > Ni > Zn > Mn > Cr, Pb and Cd were moderate-heavy pollution, Cu, Zn, Ni were moderate pollution indensity, Cr, Mn were slightly polluted. The main sources of heavy metals (Cu, Zn, Cr, Mn, Ni) in soils of industrial district were industrial pollutant discharge and vehicle emission, while, Pb and Cd mainly attributed to the emissions of coal-fired flue gas. Seven kinds of Hakanson''s ecological risk factor of heavy metals showed the order of Cd > Pb > Cu > Ni > Cr > Zn > Mn, Hakanson''s ecological risk of Cd was the greatest harmful. In conclusion, the heavy metal Cd of industrial areas soils was moderate-heavy pollution and has been a threat to residents'' health and should be payed attention. |
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| Keywords: | typical industrial area heavy metal pollution evaluation source analysis Baotou city |
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