孟加拉邦土壤的综合元素和碳分析:分布模式,污染评估和来源归因
Mahesh Tiwari1,2, Tejas Rathod1,2, Rahul Bhangare1
1Environmental Monitoring and Assessment Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India.
Environmental geochemistry and health
|March 29, 2025
概括
这项研究优化了能量分散式X射线光 (EDXRF) 用于印度旁遮普邦的土壤分析. (As) 和 (Pb) 被确定为污染最严重的元素,这表明土壤污染轻微.
科学领域:
- 环境科学 环境科学
- 地质化学 地质化学
- 分析化学 分析化学
背景情况:
- 土壤分析对于农业,营养管理和环境保护至关重要.
- 了解元素组成和污染水平,可以为土地使用和农业实践提供信息.
- 能量分散式X射线光 (EDXRF) 是元素分析的一个关键技术.
研究的目的:
- 优化EDXRF参数用于分析印度旁遮普邦土壤样本中的22个元素.
- 使用污染指数评估土壤污染和人为影响.
- 识别主要,次要和微量元素及其分布.
主要方法:
- 优化能量分散式X射线光 (EDXRF) 参数.
- 从印度旁遮普省收集和分析了土壤样本.
- 计算的污染因子,地质积累指数和污染负载指数 (PLI).
- 使用主要成分分析 (PCA) 来确定元素来源.
主要成果:
- 确定了主要 (Al,Fe,K,Mg),次要 (Ba,Mn,Zr,Rb,Ce,Sr,Cr,V) 和微量 (Zn,Ni,Pb,Cu,As,Sc,Co,Br,Cs,U) 的元素.
- 发现 (As) 和 (Pb) 是污染最严重的元素.
- 平均污染负载指数 (PLI) 为1.14,表明污染轻微.
- 主要成分分析 (PCA) 揭示了土壤元素的自然和人为来源.
结论:
- 优化EDXRF参数增强了土壤元素分析.
- 旁遮普邦的土壤有轻微的污染,主要来自As和Pb.
- 自然过程和人类活动都有助于土壤的元素组成.
更多相关视频
12:03Two-Dimensional Visualization and Quantification of Labile, Inorganic Plant Nutrients and Contaminants in Soil
Published on: September 1, 2020
09:33Visualizing Field Data Collection Procedures of Exposure and Biomarker Assessments for the Household Air Pollution Intervention Network Trial in India
Published on: December 23, 2022
相关概念视频
Gravimetry: Overview
Gravimetric analysis is a quantitative method where the analyte is isolated and weighed directly or after conversion into a substance of known composition. Gravimetric analysis can be classified as precipitation, electrogravimetry, volatilization, and particulate gravimetry, based on the method used to isolate the analyte.
In precipitation gravimetry, the analyte is converted into a precipitate and weighed. For example, the silver content in a sample can be estimated by precipitating and...
In precipitation gravimetry, the analyte is converted into a precipitate and weighed. For example, the silver content in a sample can be estimated by precipitating and...
Sampling Plans
Sampling is a crucial step in analytical chemistry, allowing researchers to collect representative data from a large population. Common sampling methods include random, judgmental, systematic, stratified, and cluster sampling.
Random sampling is a method where each member of the population has an equal chance of being selected for the sample. It involves selecting individuals randomly, often using random number generators or lottery-type methods. For example, when analyzing the properties of a...
Random sampling is a method where each member of the population has an equal chance of being selected for the sample. It involves selecting individuals randomly, often using random number generators or lottery-type methods. For example, when analyzing the properties of a...
Contaminants and Errors
Effective sample preparation is crucial for accurate and reliable laboratory analysis. During this process, two significant sources of error can arise: concentration bias from improper sample splitting and contamination caused by methods used to reduce particle size, such as grinding or homogenization. Identifying and minimizing these potential errors is crucial to ensuring the validity of the analysis.
Another key consideration is determining the appropriate number of samples required to...
Another key consideration is determining the appropriate number of samples required to...
Deleterious Substances in Aggregate
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...
Soil Microbial Ecology
Soil microbial ecology is defined by highly diverse, spatially structured communities that drive nutrient cycling, organic matter turnover, and overall ecosystem stability. Although a gram of soil can contain thousands of bacterial and archaeal taxa, the ecological processes they mediate are even more crucial for sustaining terrestrial life.Microhabitats and NichesSoil is a heterogeneous mixture of minerals, organic matter, water, and air. Microbes inhabit distinct microhabitats formed by...
Acid Mine Drainage
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 aquatic...
