页岩气地区的环境辐射监测和风险评估
Qiang Yang1, Chenlu Ding2, Xue Zhao3
1Affiliated Cancer Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 611731, PR China; College of Nuclear Technology and Automation Engineering, Chengdu University of Technology, Chengdu, 610059, Sichuan, PR China; Applied Nuclear Technology in Geosciences Key Laboratory of Sichuan Province, Chengdu University of Technology, Chengdu, 610059, PR China.
Environmental research
|September 8, 2025
概括
页岩气废弃物中天然存在的放射性物质 (NORM) 构成环境风险. 这项研究评估了土壤和水中的放射性,发现了可管理的工人剂量和有效的废水处理选项.
科学领域:
- 环境科学 环境科学
- 放射学科学 放射学科学
- 地质化学 地质化学
背景情况:
- 在页岩气废物中发现了自然存在的放射性物质 (NORM),这引发了环境和职业健康方面的担忧.
- 公众和科学家越来越关注NORM与能源开采活动相关的风险.
研究的目的:
- 评估中国西南地区页岩气开发产生的环境放射性和潜在的职业暴露.
- 评估土壤和废水样本中的放射性核酸度.
- 为放射性风险评估提供基准,并为管理策略提供信息.
主要方法:
- 在页岩气运营阶段收集土壤,废水和废水样本.
- 在现场测量了玛吸收剂量速率,土壤度和放射性核酸活性.
- 计算了常规危险指数和工人有效剂量.
主要成果:
- 土壤放射性和剂量率与其他石油/天然气田相比,与系列核酸相关.
- 拉顿后代的积累是指210Pb/226Ra的比率随着操作时间的增加而增加.
- 在未经处理的水中增加的226Ra,228Ra和40K可以通过处理来减少;工人剂量保持在1mSvy-1.0以下.
结论:
- 直接测量剂量速率对于准确的评估至关重要.
- 现有的废水处理技术可以有效降低放射性核化物度.
- 持续监测和强有力的废水管理对于减轻页岩气田的放射性风险至关重要.
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