地质化学基线值的确定和微量元素在地表土壤的空间分布:在西西里地区 (意大利) 的应用
Daniela Varrica1, Federica Lo Medico1, Marino Vetuschi Zuccolini2
1Università degli studi di Palermo, DiSTeM, Palermo, Italy.
The Science of the total environment
|October 19, 2024
概括
本研究使用先进的统计方法确定了西西里上层土壤的地化学基线值. 这些发现为评估不同地质区域的土壤污染提供了可靠的方法.
科学领域:
- 地质化学 地质化学
- 环境科学 环境科学
- 土壤科学 土壤科学
背景情况:
- 确定准确的地质化学基线值对于评估土壤污染至关重要.
- 西西里岛的石学异质性为建立区域土壤基线带来了挑战.
- 潜在有毒元素 (PTEs) 需要对表层土壤进行仔细监测.
研究的目的:
- 提出和验证一个可靠的方法来确定地质化学基线值在地表土壤.
- 确定西西里岛微量元素的区域地质化学基线值.
- 创建详细的地化学地图,预测未采样区域的元素分布.
主要方法:
- 从西西里岛的非人类影响地区采集了83个表土样本.
- 使用诱导合等离子体质谱法 (ICP-MS) 量化潜在的有毒元素 (As,Cd,Cr,Cu,Mo,Pb,Sb,V,Zn).
- 应用统计方法 (Me±2MAD,P95,UTL95-95) 和随机模拟来确定基线和空间映射.
主要成果:
- 度中位数为0.23至68.8μggg−1的PTE,其中Zn > V > Cr > Cu > Pb > As > Mo > Sb > Cd.
- 在确定区域地质化学基线方面,无论石质学如何,上限容忍度 (UTL95-95) 统计方法被证明是最有效的.
- 创建了详细的地化学地图,预测未采样地点的元素度.
结论:
- 提出的方法,特别是使用UTL95-95,为异质地区提供可靠的地化学基线值.
- 生成的地球化学地图提高了评估土壤环境污染状况的能力.
- 这种方法支持更准确的环境风险评估和土地管理策略.
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
6.0K
07:32Monitoring Pedogenic Inorganic Carbon Accumulation Due to Weathering of Amended Silicate Minerals in Agricultural Soils.
Published on: June 4, 2021
5.1K
相关概念视频
01:05Gravimetry: 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...
00:49Gravimetry: Inorganic And Organic Precipitating Agents
In gravimetry, the precipitant is chosen carefully to obtain a pure solid that can be easily filtered. Common inorganic precipitants can be used to determine several cations and anions. In some cases, the formation of the same precipitate can be used to determine the cation and the anion. For example, the reaction of barium and chromate ions to give barium chromate is used to determine both barium and chromate. However, precipitates such as hydroxides, oxalates, and metal ammonium phosphates...
01:29Soil 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...