The analytical performance of gamma-ray spectrometry for the measurement of (226)Ra in TENORM (Technically Enhanced Naturally Occurring Radioactive Material) soil was investigated by the IAEA. Fast results were obtained for characterization and certification of a new TENORM Certified Reference Material (CRM), identified as IAEA-448 (soil from oil field). The combined standard uncertainty of the gamma-ray spectrometry results is of the order of 2-3% for massic activity measurement values ranging from 16500 Bq kg(-1) to 21500 Bq kg(-1). Methodologies used for the production and certification of the IAEA-448 CRM are presented. Analytical results were confirmed by alpha spectrometry. The "t" test showed agreement between alpha and gamma results at 95% confidence level.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.apradiso.2013.11.081 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Conservative mechanism through various rapeseed ( L.) varieties respond to heavy metal (Cadmium, Lead, Arsenic) stress.
Front Plant Sci
January 2025
College of Agriculture, Agricultural University of Hunan, Changsha, China.
Introduction: Heavy metal soil pollution is a global issue that can be efficiently tackled through the process of phytoremediation. The use of rapeseed in the phytoremediation of heavy metal-contaminated agricultural land shows great potential. Nevertheless, its ability to tolerate heavy metal stress at the molecular level remains unclear.
View Article and Find Full Text PDFHumic Acid with Vertical Adsorption Conformation Enhanced the Transport of Petroleum Hydrocarbon-Contaminated Colloids.
Environ Sci Technol
January 2025
College of Marine and Environmental Science, Tianjin University of Science and Technology, Tianjin 300457, China.
Humic acid (HA) enhances colloidal transport in porous media, yet the mechanisms by which the HA adsorption conformation affects colloid transport remain unclear. This study investigated the influence of HA on the transport of petroleum-hydrocarbon-contaminated soil colloids (TPHs-SC) in saturated sand columns. The presence of TPHs on the colloidal surface occupied adsorption sites, hindering HA from forming a horizontal adsorption conformation, as observed on uncontaminated soil colloids (SC).
View Article and Find Full Text PDFTowards circularity for agro-waste: Minimal soil hazards of olive pomace bioconverted frass by insect larvae as an organic fertilizer.
J Environ Manage
January 2025
CESAM - Centre for Environmental and Marine Studies, Department of Biology, Campus Universitário de Santiago, University of Aveiro, 3810-193 Aveiro, Portugal.
As global populations escalate and the demand for food and feed intensifies, the generation of agri-food waste is becoming an increasingly critical issue. Addressing this challenge is crucial for optimizing food production and advancing sustainable waste management practices. In this context, insects, including the Black Soldier Fly (BSF, Hermetia illucens), present opportunities for circularity through the bioconversion of organic waste.
View Article and Find Full Text PDFMolecular mechanisms of nitric oxide regulating high photosynthetic performance of wheat plants in waterlogging at flowering.
Plant Physiol Biochem
January 2025
Agricultural College, Anhui Agricultural University, 230036, Hefei, China; Collaborative Innovation Center for Modern Crop Production co-sponsored by Province and Ministry (CIC-MCP), 210095, Nanjing, China. Electronic address:
Nitric oxide (NO) positively contributes to maintaining a high photosynthetic rate in waterlogged-wheat plants by maintaining high stomatal conductance (g), mesophyll conductance (g), and electron transport rates in PSII (J). However, the molecular mechanisms underlying the synergistic regulation of photosynthetic characteristics during wheat waterlogging remain unclear. Pot experiments were conducted with two cultivars: Yangmai15 (YM15: high waterlogging-tolerance capacity) and Yangmai24 (YM24: conventional waterlogging-tolerance capacity).
View Article and Find Full Text PDFLong-term nitrogen fertilization alters the partitioning of amino acids between citrus leaves and fruits.
Front Plant Sci
January 2025
Center of Molecular Ecophysiology (CMEP), College of Resources and Environment, Southwest University, Chongqing, China.
Introduction: The growth of evergreen fruit trees is influenced by the interaction of soil nitrogen (N) and leaf amino acid contents. However, information on free amino acid contents in leaves of fruiting and non-fruiting branches during long-term N fertilizer application remains scarce.
Methods: Here, a four-year field experiment (2018-2021) in a citrus orchard revealed consistently lower total N and amino acid contents in leaves of fruiting compared to non-fruiting branches.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!