Progress on Radiometric Dating of Wolfcamp Brines Using 4He and 40Ar

1983 ◽  
Vol 26 ◽  
Author(s):  
A. Zaikowski ◽  
B. J. Kosanke ◽  
N. Hubbard
Keyword(s):  
Ground Water ◽  
Water Samples ◽  
Noble Gas ◽  
Radioactive Decay ◽  
Gas Production ◽  
Radiometric Dating ◽  
Production Rates ◽  
Deep Wells ◽  
Hydrochemical Data ◽  
Radiometric Ages

ABSTRACTGround water samples (brines) from deep wells in the Palo Duro Basin, Texas are being analyzed for noble gases in an attempt to obtain radiometric ages for these brines. The brines contain radiogenic 4He and 40Ar produced from the radioactive decay of U, Th, and K. Consideration of hydrochemical data for the brines, various isotopic, chemical, and mineralogical data for the aquifer rocks and noble gas production rates allow estimating the age of the brines to be about 130 million years at two wells. At a third well interaquifer mixing has occurred and the age is presently indeterminate.

scholarly journals A peep into the state of ground water quality in the district of Tiruvannamalai, Tamil Nadu, India, from a radiological and chemical toxicity perspective

2021 ◽  
Vol 11 (5) ◽  
Author(s):  
Durai Ganesh ◽  
G. Senthilkumar ◽  
P. Eswaran ◽  
M. Balakrishnan ◽  
S. N. Bramha ◽  
...  
Keyword(s):  
Water Quality ◽  
Ground Water ◽  
Water Samples ◽  
Tamil Nadu ◽  
Potable Water ◽  
Uranium Concentration ◽  
The State ◽  
Chemical Toxicity ◽  
Ground Water Quality ◽  
Led Fluorimeter

AbstractUranium concentration in the ground water samples from the district of Tiruvannamalai, Tamil Nadu, was measured using an LED fluorimeter. All the samples were qualified as potable water from the radiological perspective. Though some samples showed mild chemical toxicity, they are still safe for ingestion. Different risk coefficients were calculated, and they were compared with recommended safety limits specified by various agencies. Software tools such as QGIS 15, GraphPad Prism 8 and Surfer 15 were employed for developing maps and plots.

Filtration of Ground Water Samples for Metals Analysis

1989 ◽  
Vol 6 (4) ◽  
pp. 385-393 ◽  
Author(s):  
ROBERT W. PULS ◽  
MICHAEL J. BARCELONA
Keyword(s):  
Ground Water ◽  
Water Samples

Reproducibility and accuracy of noble gas measurements on water samples in the microlitre range

2013 ◽  
Vol 28 (1) ◽  
pp. 42-48
Author(s):  
Tim Sander ◽  
Thomas Marx ◽  
Jürgen Engel ◽  
Werner Aeschbach-Hertig
Keyword(s):  
Water Samples ◽  
Noble Gas ◽  
Gas Measurements

scholarly journals Biosorption of Fluoride from Synthetic and Ground Water Using Chlorella vulgaris Immobilized in Calcium Alginate Beads in an Upflow Packed Bed Column

2017 ◽  
Vol 61 (3) ◽  
pp. 188 ◽  
Author(s):  
Poornima G. Hiremath ◽  
Thomas Theodore
Keyword(s):  
Experimental Data ◽  
Ground Water ◽  
Chlorella Vulgaris ◽  
Water Samples ◽  
Packed Column ◽  
Fluoride Concentration ◽  
Fixed Bed ◽  
Fluoride Removal ◽  
Fluoride Ions ◽  
Fluoride Adsorption

The potential of immobilized Chlorella vulgaris to remove fluoride from synthetic and real ground water samples in a fixed bed was investigated. The effect of important kinetic parameters including column bed height, feed flow rate and influent fluoride concentration of solution on fluoride removal was studied. Thomas, Yoon-Nelson, and BDST models were used to analyze the experimental data and understand the influence on biosorption performance. The models’ predictions were in good agreement with the experimental data for all the process parameters studied, indicating that the models were suitable for fixed-bed column design. Fluoride adsorption was reversible. Desorption of fluoride ions was accomplished by pumping 0.1 N HCl solution. The reusability of adsorbent was studied by subjecting column to repeated cycles of fluoride adsorption and desorption. The suitability of immobilized C. vulgaris adsorbent for fluoride removal from ground water samples of Pavagada taluk, Tumakuru district was studied in the packed column.

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