相关实验视频
Updated: Jun 24, 2025

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Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh
Published on: May 3, 2019
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通过阿尔法光谱测量在肥料中的确定效率跟踪的一个替代方法
1Radiation Protection Measurements Laboratory, NCBJ National Centre for Nuclear Research, 05-400, Otwock, Świerk, Poland.
Journal of environmental radioactivity
|June 12, 2024
概括
肥料的使用可以污染土壤的放射性核酸,如. 这项研究测量了波兰肥料中的同位素,发现高达97 Bq kg-1的水平,特别是在酸盐类型中.
科学领域:
- 环境科学 环境科学
- 分析化学 分析化学
- 农业科学 农业科学
背景情况:
- 肥料对于全球粮食安全至关重要,可以提高作物产量.
- 然而,它们的应用可能会引入环境污染物,包括放射性核酸.
- 肥料中的放射性核化物污染土壤,带来了生态和健康的风险.
研究的目的:
- 量化波兰生产的各种肥料中同位素的活性度.
- 评估使用肥料对土壤的潜在放射性影响.
主要方法:
- 为了准确的化学回收评估,使用了另一种标记物 (-228).
- 通过分析认证的参考材料验证了分析方法.
- 使用马光谱测量测量了232Th的活性度.
主要成果:
- 在不同类型的肥料中,232Th的活性度差异很大.
- 化肥的232Th含量最低 (<0.34 Bq kg-1). 化肥的232Th含量最低 (<0.34 Bq kg-1). 化肥的232Th含量最低 (<0.34 Bq kg-1). 化肥的232Th含量最低 (<0.34 Bq kg-1). 化肥的232Th含量最低 (<0.34 Bq kg-1).
- 酸肥表现出较高的232Th度,达到高达97 ± 22 Bq kg-1.
结论:
- 波兰常用的肥料含有不同程度的232Th.
- 酸肥料是同位素的重要来源.
- 需要进一步的研究来评估这些发现的长期环境和健康影响.
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