下面隐藏的威胁:通过多机器学习算法揭示矿废物的生物可访问性危害及其对大米组件的影响
Sonali Banerjee1, Saibal Ghosh1, Jyoti Prajapati2
1Agricultural and Ecological Research Unit, Indian Statistical Institute, Giridih, Jharkhand, 815301, India.
Environmental geochemistry and health
|May 17, 2025
概括
化石-石棉开采污染了农田的有毒元素. 儿童面临着受污染大米的更高的健康风险,被认为是主要的风险因素,需要加强环境法规.
科学领域:
- 环境科学 环境科学
- 毒理学 毒理学 毒理学
- 地质化学 地质化学
背景情况:
- 化石-石棉采矿产生有毒废物,污染农业土壤与潜在的有毒元素 (PTEs).
- 侵蚀过程加剧了PTE的传播,影响生态系统,食物链和人类健康.
- 评估PTE的生物可访问性和可泄漏性对于了解健康和饮食风险至关重要.
研究的目的:
- 评估在化石-石棉采矿场附近的农业土壤中PTE的生物可访问和可浸出形式.
- 评估与该地区的PTE污染相关的健康和饮食风险,特别是通过大米消费.
- 实施先进的风险评估模型和预测PTE对土壤-大米系统和人类健康的影响.
主要方法:
- 分析不同土壤区域的可浸和可生物利用的PTE (Cr,Ni).
- 使用SAMOE模型进行饮食风险评估,并评估米部分中的PTE.
- 应用 Fuzzy-TOPSIS,人工神经网络,蒙特卡罗模拟和 Fuzzy-DEMATEL 进行风险分析和预测.
- 脆弱性评估比较儿童和成人健康风险.
主要成果:
- 与未受污染的土壤 (第3区) 相比,在靠近采矿区的土壤中 (第1区和第2区) 发现了可浸出和生物可访问的PTE (Cr,Ni) 的较高度.
- 由于含有PTE,食用大米,特别是煮熟的和没有的大米,存在中度至高的饮食风险.
- 在多个模型中, (Cr) 被确定为人类风险的主要贡献者.
- 与成年人相比,儿童通过摄入表现出明显更高的致癌风险.
- 粉和米的消费被确定为影响人口健康风险的关键因素.
结论:
- 化石-石棉采矿严重污染农业土壤的PTE,造成相当大的健康和饮食风险.
- 儿童更容易受到PTE诱导的健康风险,这凸显了有针对性的保护措施的必要性.
- 先进的建模技术,包括机器学习,在评估和预测土壤-食品系统中PTE风险方面是有效的.
- 调查结果强调了强有力的环境法规和风险管理策略的重要性,以减轻健康危害和保护生态系统的完整性.
相关概念视频
01:27Microbial Leaching
15
Microbial leaching, also known as bioleaching, is an environmentally favorable method for extracting metals from low-grade ores using specific microorganisms. This biotechnological approach is particularly valuable for mining operations targeting copper, gold, and uranium, where traditional extraction methods may be economically or environmentally impractical.Copper Leaching and Microbial CatalysisIn copper bioleaching, crushed ore is arranged into heaps and irrigated with a dilute sulfuric...
15
01:25Microbial Bioremediation of Uranium
18
Microorganisms play a critical role in the transformation and immobilization of uranium in contaminated environments through four main pathways: bioreduction, biosorption, bioaccumulation, and biomineralization. These mechanisms reduce uranium’s toxicity and prevent its migration through groundwater systems, offering sustainable approaches for in situ bioremediation.Bioreduction of UraniumBioreduction is driven by anaerobic bacteria such as certain strains of Geobacter and Shewanella,...
18
01:19Acid Mine Drainage
25
Mining activities that disturb sulfide-rich rocks, particularly those containing pyrite (FeS₂), initiate a cascade of geochemical and microbiological processes with serious environmental implications. When exposed to air and water, pyrite undergoes oxidation, releasing sulfate, ultimately forming sulfuric acid and mobilizing heavy metals into surrounding water systems. This phenomenon, known as acid mine drainage (AMD), results in low pH waters laden with toxic elements that threaten...
25
01:25Mutagenicity and Carcinogenicity
2.1K
Mutagenicity and carcinogenicity refer to the ability of drugs to cause genetic defects and induce cancer, respectively. The International Agency for Research on Cancer (IARC) classifies agents into four groups based on their carcinogenic potential. Group 1 agents are known human carcinogens; group 2A agents are probably carcinogenic to humans; group 3 agents lack data to support their role in carcinogenesis; and group 4 includes agents for which data support that they are not likely to be...
2.1K
01:25Deleterious Substances in Aggregate
670
Deleterious substances in aggregates can be detrimental to the quality and durability of concrete. These substances include organic impurities like loam, which interfere with cement hydration and are usually present in the sand. These prevent a good bond between aggregate and cement paste. Organic impurities can be detected using the colorimetric test, where the darkness of a solution after agitation indicates the level of organic content.
Another type of impurity is clay and fine material that...
Another type of impurity is clay and fine material that...
670