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首页> 外文期刊>Radiation Protection Dosimetry >DISTRIBUTION, ENRICHMENT AND PRINCIPAL COMPONENT ANALYSIS FOR POSSIBLE SOURCES OF NATURALLY OCCURRING AND ANTHROPOGENIC RADIONUCLIDES IN THE AGRICULTURAL SOIL OF PUNJAB STATE, INDIA
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DISTRIBUTION, ENRICHMENT AND PRINCIPAL COMPONENT ANALYSIS FOR POSSIBLE SOURCES OF NATURALLY OCCURRING AND ANTHROPOGENIC RADIONUCLIDES IN THE AGRICULTURAL SOIL OF PUNJAB STATE, INDIA

机译：印度旁遮普邦农业土壤中天然来源和人为放射性核素可能来源的分布，富集和主要成分分析

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摘要

Enrichment factor (EF) of elements including geo-accumulation indices for soil quality and principal component analysis (PCA) were used to identify the contributions of the origin of sources in the studied area. Results of ~(40)K, ~(137)Cs, ~(238)U and ~(232)Th including their decay series isotopes in the agricultural soil of Mansa and Bathinda districts in the state of Punjab were presented and discussed. The measured mean radioactivity concentrations for ~(238)U, ~(232)Th and ~(40)K in the agricultural soil of the studied area differed from nationwide average crustal abundances by 51, 17 and 43 %, respectively. The sequence of the EFs of radionuclides in soil from the greatest to the least was found to be ~(238)U > ~(40)K > ~(226)Ra > ~(137)Cs > ~(232)Th > ~(228)Ra. Even though the enrichment of naturally occurring radionuclides was found to be higher, they remained to be in /_(geo) class of '0', indicating that the soil is uncontaminated with respect to these radionuclides. Among non-metals, N showed the highest EF and belonged to I_(geo) class of '2', indicating that soil is moderately contaminated due to intrusion of fertiliser. The resulting data set of elemental contents in soil was also interpreted by PCA, which facilitates identification of the different groups of correlated elements. The levels of the ~(40)K, ~(238)U and ~(232)Th radionuclides showed a significant positive correlation with each other, suggesting a similar origin of their geochemical sources and identical behaviour during transport in the soil system.
机译：元素的富集因子（EF）包括土壤质量的地积累指数和主成分分析（PCA）用于确定研究区域内源头来源的贡献。介绍并讨论了旁遮普邦曼萨和巴辛达地区农业土壤中〜（40）K，〜（137）Cs，〜（238）U和〜（232）Th的结果，包括其衰变系列同位素。在研究区域的农业土壤中，测得的〜（238）U，〜（232）Th和〜（40）K的平均放射性浓度与全国平均地壳丰度分别相差51％，17％和43％。发现土壤中放​​射性核素的EF顺序从大到小依次为〜（238）U>〜（40）K>〜（226）Ra>〜（137）Cs>〜（232）Th>〜 （228）镭即使发现天然存在的放射性核素的富集度更高，它们仍然处于'0'的（_）（geo）级，这表明土壤未受到这些放射性核素的污染。在非金属中，N显示出最高的EF，并且属于I_（geo）类'2'，表明土壤由于肥料的侵入而受到中等程度的污染。 PCA还解释了土壤中元素含量的数据集，这有助于识别不同组的相关元素。 〜（40）K，〜（238）U和〜（232）Th放射性核素水平显示出显着的正相关，表明它们的地球化学来源相似，并且在土壤系统中的运输过程中具有相同的行为。

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  • 来源
    《Radiation Protection Dosimetry》 |2012年第1期|p.71-81|共11页
  • 作者

    Ajay Kumar; Vikram M. Joshi; Manish K. Mishra; Rupali Karpe; Sabyasachi Rout; Usha Narayanan; Raj M. Tripathi; Jaspal Singh; Sanjeev Kumar; Ashok G. Hegde; Hari S. Kushwaha;

  • 作者单位

    Health Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai, India;

    Health Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai, India;

    Health Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai, India;

    Environmental Assessment Division, Bhabha Atomic Research Centre, Trombay, Mumbai, India;

    Health Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai, India;

    Health Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai, India;

    Environmental Assessment Division, Bhabha Atomic Research Centre, Trombay, Mumbai, India;

    Department of Physics, Guru Nanak Dev University, Amritsar, Punjab, India;

    Department of Physics, Guru Nanak Dev University, Amritsar, Punjab, India;

    Health Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai, India;

    Health, Safety and Environment Group, Bhabha Atomic Research Centre, Trombay, Mumbai, India;

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