Results 11 to 20 of about 11,258 (258)

The progress and prospects of potassium stable isotopes in hydrogeochemistry

Shuiwen dizhi gongcheng dizhi, 2023
Chemical weathering of silicate minerals is an important source for Ca, Mg, Na and K. However, in comparison with other major elements (e.g., Ca, Mg and Na) in waters, how K behaves during water-rock interaction remains poorly understood.
Taotao JI, Xiaowei JIANG
doaj   +1 more source

Mercury Isotopes in Shale Gas From Wufeng-Longmaxi Shale Formation of Sichuan Basin, Southern China: A Preliminary Investigation

Frontiers in Earth Science, 2022
A series of investigations have been conducted concerning the study of traditional stable isotopes and rare gas stable isotopes in natural gas. However, little is known regarding non-traditional stable isotopes of mercury in natural gas, especially in ...
Shunlin Tang, Yuxiang Ding, Guangyou Zhu, Xinbin Feng, Huaishun Zhang, Penggao Li   +5 more
doaj   +1 more source

Gamma-ray spectrometry of the Araguainha impact structure, Brazil: Additional insights into element mobilization due to hydrothermal alteration

Anais da Academia Brasileira de Ciências, 2022
We present the analysis of airborne and ground gamma-ray spectrometry signatures of the Araguainha impact structure, located in central Brazil, the largest impact structure in South America with ~ 40 km diameter.
EMILSON P. LEITE, JOHANN LAMBERT, MARCOS ALBERTO R. VASCONCELOS, ALVARO P. CRÓSTA, ALESSANDRO BATEZELLI   +4 more
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Measuring the specific concentration of the radioactive isotopes of 40K, 137Cs and (224Ra, 226Ra, 228Ra)

Journal of Kufa-Physics, 2018
The specific concentration of radioisotopes of Potassium 40K; Cesium 137Cs and Radium (224Ra ,226Ra, 228Ra) have been identified for soil, sediment, fish samples (Liza abu, Liza klunzingeri, Brachirus orientalius, Tylosurus crocodilus, Cyprinus carpio ...
Aqeel Abdulsahib Alwaeli, Ali Bassal Mahmood   +1 more
doaj   +1 more source

Origin and evolution of intercrystalline brine in the northern Qaidam Basin based on hydrochemistry and stable isotopes

Frontiers in Environmental Science, 2023
The Kunteyi Basin, located in northern Qaidam, is known as a significant potash ore deposit in China. It is of great significance to study the origin of the potassium-rich intercrystalline brine to support the exploitation of potassium salts.
Qianhui Ren, Qianhui Ren, Qianhui Ren, Binkai Li, Yan Zhang, Haitao Wu, Haitao Wu, Haitao Wu   +7 more
doaj   +1 more source

Potassium isotopic heterogeneity in subducting oceanic plates [PDF]

Science Advances, 2020
High-precision K isotopic measurements identify crustal inputs to the mantle and controls on oceanic K cycle.
Yan Hu, Fang-Zhen Teng, Terry Plank, Catherine Chauvel   +3 more
openaire   +4 more sources

Radioactivity assessment of selected samples of foodstuffs in the local market

Tikrit Journal of Pure Science, 2022
The research aims to evaluate the radioactivity of samples of foodstuffs Consumables  in the local  markets thirteen items were selected which are rice, tea, drinking water, lentils, chickpeas, flour, red bean, crushed chickpeas and milk powder  where ...
Esam S. Ali, Nadia A. Majeed, Alaa F. Hashim   +2 more
doaj   +1 more source

Thallium Use, Toxicity, and Detoxification Therapy: An Overview

Applied Sciences, 2021
Thallium (Tl) is released into the environment, where is present at very low levels, from both natural and anthropogenic sources. Tl is considered as one of the most toxic heavy metals; it is a non-essential metal, present in low concentrations in humans.
Giuseppe Genchi, Alessia Carocci, Graziantonio Lauria, Maria Stefania Sinicropi, Alessia Catalano   +4 more
doaj   +1 more source

Novel Calibration Approach for Monitoring Aerosol Hydrogen Isotopes Using Laser-Induced Breakdown Spectroscopy for Molten Salt Reactor Off-Gas Streams

Sensors, 2023
Online monitoring is a key challenge for the continued development of molten salt reactor (MSR) technology. Laser-induced breakdown spectroscopy (LIBS) has previously been demonstrated to be a viable tool for monitoring aerosolized species and noble ...
Hunter B. Andrews, Joanna McFarlane
doaj   +1 more source

SEPARATION OF POTASSIUM ISOTOPES IN VALONIA AND NITELLA [PDF]

Journal of General Physiology, 1940
The ratio of K39 ÷ K41 appears to be lower in the sap of Valonia and Nitella than in the environment, indicating that the living cell can separate these isotopes to some extent. Experiments with a mixture of guaiacol and p-cresol suggest that a similar separation may occur here but further experiments are needed.
openaire   +2 more sources