JVWCD service area tap water isotope ratio

<p>A snow pit samples contain information of atmospheric composition and weather condition for recent years. In this study, water isotope ratio and concentrations of major ions and rare earth elements (REE) were determined from a 2 m snow pit sampled at 5 cm intervals at Hercules Neve in northern Victoria Land, Antarctica (73&#176; 03'S, 165&#176; 25'E, 2900m). The water stable isotope ratios range from -45.10 to -29.51 &#8240; for &#948;18O and from 355.8 to -229.2 &#8240; for &#948;D. From their clear seasonality, the snow pit is expected to cover the period of 2012&#8211;2015. The REE patterns reveal that there exist at least two distinct sources of terrestrial aerosols; One that makes superior contribution when sea salt input is high is likely located closer than another.&#160;</p>

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Simulation of the isotopic composition of stratospheric water vapour – Part 2: Investigation of HDO / H<sub>2</sub>O variations

Atmospheric Chemistry and Physics ◽

10.5194/acp-15-7003-2015 ◽

2015 ◽

Vol 15 (12) ◽

pp. 7003-7015 ◽

Cited By ~ 10

Author(s):

R. Eichinger ◽

P. Jöckel ◽

S. Lossow

Keyword(s):

Isotopic Composition ◽

Water Vapour ◽

Isotope Ratio ◽

Hydrological Cycle ◽

Isotope Composition ◽

Tape Recorder ◽

Boreal Summer ◽

Chemical Fractionation ◽

Stratospheric Water Vapour ◽

Water Isotope

Abstract. Studying the isotopic composition of water vapour in the lower stratosphere can reveal the driving mechanisms of changes in the stratospheric water vapour budget and therefore help to explain the trends and variations of stratospheric water vapour during recent decades. We equipped a global chemistry climate model with a description of the water isotopologue HDO, comprising its physical and chemical fractionation effects throughout the hydrological cycle. We use this model to improve our understanding of the processes which determine the patterns in the stratospheric water isotope composition and in the water vapour budget itself. The link between the water vapour budget and its isotopic composition in the tropical stratosphere is presented through their correlation in a simulated 21-year time series. The two quantities depend on the same processes; however, they are influenced with different strengths. A sensitivity experiment shows that fractionation effects during the oxidation of methane have a damping effect on the stratospheric tape recorder signal in the water isotope ratio. Moreover, the chemically produced high water isotope ratios overshadow the tape recorder in the upper stratosphere. Investigating the origin of the boreal-summer signal of isotopically enriched water vapour reveals that in-mixing of old stratospheric air from the extratropics and the intrusion of tropospheric water vapour into the stratosphere complement each other in order to create the stratospheric isotope ratio tape recorder signal. For this, the effect of ice lofting in monsoon systems is shown to play a crucial role. Furthermore, we describe a possible pathway of isotopically enriched water vapour through the tropopause into the tropical stratosphere.

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Development and airborne operation of a compact water isotope ratio infrared spectrometer†

Isotopes in Environmental and Health Studies ◽

10.1080/10256010903172715 ◽

2009 ◽

Vol 45 (4) ◽

pp. 303-320 ◽

Cited By ~ 26

Author(s):

Rosario Q. Iannone ◽

Samir Kassi ◽

Hans-Jürg Jost ◽

Marc Chenevier ◽

Daniele Romanini ◽

...

Keyword(s):

Isotope Ratio ◽

Infrared Spectrometer ◽

Water Isotope

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Tap water isotope ratios reflect urban water system structure and dynamics across a semiarid metropolitan area

Water Resources Research ◽

10.1002/2016wr019104 ◽

2016 ◽

Vol 52 (8) ◽

pp. 5891-5910 ◽

Cited By ~ 30

Author(s):

Yusuf Jameel ◽

Simon Brewer ◽

Stephen P. Good ◽

Brett J. Tipple ◽

James R. Ehleringer ◽

...

Keyword(s):

Metropolitan Area ◽

Tap Water ◽

Water System ◽

Isotope Ratios ◽

System Structure ◽

Urban Water ◽

Structure And Dynamics ◽

Urban Water System ◽

Water Isotope

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Triple isotope variations of monthly tap water in China

Scientific Data ◽

10.1038/s41597-020-00685-x ◽

2020 ◽

Vol 7 (1) ◽

Cited By ~ 1

Author(s):

Chao Tian ◽

Lixin Wang ◽

Wenzhe Jiao ◽

Fadong Li ◽

Fuqiang Tian ◽

...

Keyword(s):

Water Management ◽

Management Practices ◽

Tap Water ◽

Spatial Scales ◽

Management Strategies ◽

Geographic Location ◽

Water Source ◽

Local Climate ◽

Collection Sites ◽

Water Isotope

Abstract Tap water isotopic compositions could potentially record information on local climate and water management practices. A new water isotope tracer 17O-excess became available in recent years providing additional information of the various hydrological processes. Detailed data records of tap water 17O-excess have not been reported. In this report, monthly tap water samples (n = 652) were collected from December 2014 to November 2015 from 92 collection sites across China. The isotopic composition (δ2H, δ18O, and δ17O) of tap water was analyzed by a Triple Water Vapor Isotope Analyzer (T-WVIA) based on Off-Axis Integrated Cavity Output Spectroscopy (OA-ICOS) technique and two second-order isotopic variables (d-excess and 17O-excess) were calculated. The geographic location information of the 92 collection sites including latitude, longitude, and elevation were also provided in this dataset. This report presents national-scale tap water isotope dataset at monthly time scale. Researchers and water resource managers who focus on the tap water issues could use them to probe the water source and water management strategies at large spatial scales.

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Seeking excellence: An evaluation of 235 international laboratories conducting water isotope analyses by isotope-ratio and laser-absorption spectrometry

Rapid Communications in Mass Spectrometry ◽

10.1002/rcm.8052 ◽

2018 ◽

Vol 32 (5) ◽

pp. 393-406 ◽

Cited By ~ 23

Author(s):

L.I. Wassenaar ◽

S. Terzer-Wassmuth ◽

C. Douence ◽

L. Araguas-Araguas ◽

P.K. Aggarwal ◽

...

Keyword(s):

Isotope Ratio ◽

Absorption Spectrometry ◽

Laser Absorption ◽

Isotope Analyses ◽

Water Isotope

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Influence of Fermentation Water on Stable Isotopic D/H Ratios of Alcohol Obtained from Concentrated Grape Must

Molecules ◽

10.3390/molecules25143139 ◽

2020 ◽

Vol 25 (14) ◽

pp. 3139 ◽

Cited By ~ 2

Author(s):

Matteo Perini ◽

Andrea Failoni ◽

Marco Simoni ◽

Agostino Tonon ◽

Federica Camin

Keyword(s):

Stable Isotope ◽

Isotope Ratio ◽

Alcoholic Fermentation ◽

Tap Water ◽

Isotopic Fractionation ◽

Stable Isotope Ratio ◽

Grape Must ◽

Stable Isotopic ◽

Partial Transfer ◽

Diluted Solution

According to Organisation Internationale de la vigne et du vin (OIV) standards, when analysing the stable isotope ratio of deuterium to hydrogen D/H at the methyl (I) and methylene (II) site of ethanol from concentrated must, a dilution with tap water is needed in order to carry out the alcoholic fermentation. This dilution causes a partial transfer of water hydrogens to the sugar, and this affects the (D/H)I and (D/H)II isotopic values of ethanol, which need to be normalised through specific equations based on the analysis of water δ18O or δ2H. The aim of this study was to evaluate the effectiveness and correctness of these equations experimentally. Grape, cane, and beet sugar, as well as grape must were diluted with water with increasing H and O stable isotope ratios, fermented, and analysed. SNIF-NMR and IRMS techniques were applied following the respective OIV methods. The equations based on the δ2H analysis of the diluted sugar/must solutions proved to be reliable in all the cases, although it is not an OIV standard. When using the equations based on the values of δ18O of the diluted solution, data normalisation was reliable only in cases where the water used for dilution had not undergone isotopic fractionation due, for example, to evaporation. In these cases, δ2H should be analysed.

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