Technical note: A new laboratory approach to extract soil water for stable isotope analysis from large soil samples

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985874%3A_____%2F25%3A00637263" target="_blank" >RIV/67985874:_____/25:00637263 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11310/25:10499795 RIV/68407700:21110/25:00386257

Výsledek na webu

<a href="https://hess.copernicus.org/articles/29/2863/2025/" target="_blank" >https://hess.copernicus.org/articles/29/2863/2025/</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5194/hess-29-2863-2025" target="_blank" >10.5194/hess-29-2863-2025</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Technical note: A new laboratory approach to extract soil water for stable isotope analysis from large soil samples

Popis výsledku v původním jazyce

A correct soil water extraction represents an initial step in stable water isotope analysis. With this aim, we present a new soil water extraction method based on the principle of complete evaporation and condensation of the soil water in a closed circuit. The proposed device has four extraction slots and can be used up to two times a day. Owing to its simple design, there is no need for any chemicals, gases, or high-pressure or high-temperature regimes. The experimental tests proved that the extraction itself does not cause any major isotope fractionation effects leading to erroneous results. Extraction of pure-water samples shifts the isotope composition by 0.04 ± 0.06 ‰ and 0.06 ± 0.35 ‰ for δ18O and δ2H, respectively. Soil water extraction tests were conducted for five distinct soil types (loamy sand, sandy loam, sandy clay, silt loam, and clay) using 40–150 g of pre-oven-dried soil, which was subsequently rehydrated to 10 % and 20 % water content. The shift in the isotopic composition of these tests ranged between −0.04 ‰ and 0.07 ‰ for δ18O and 0.4 ‰ and 1.3 ‰ for δ2H, with the standard deviations of ± (0.08–0.25) ‰ and ± (0.34–0.58) ‰ for δ18O and δ2H, respectively. The results exhibit high accuracy, which makes this method suitable for high-precision studies where unambiguous determination of the water origin is required.

Název v anglickém jazyce

Technical note: A new laboratory approach to extract soil water for stable isotope analysis from large soil samples

Popis výsledku anglicky

A correct soil water extraction represents an initial step in stable water isotope analysis. With this aim, we present a new soil water extraction method based on the principle of complete evaporation and condensation of the soil water in a closed circuit. The proposed device has four extraction slots and can be used up to two times a day. Owing to its simple design, there is no need for any chemicals, gases, or high-pressure or high-temperature regimes. The experimental tests proved that the extraction itself does not cause any major isotope fractionation effects leading to erroneous results. Extraction of pure-water samples shifts the isotope composition by 0.04 ± 0.06 ‰ and 0.06 ± 0.35 ‰ for δ18O and δ2H, respectively. Soil water extraction tests were conducted for five distinct soil types (loamy sand, sandy loam, sandy clay, silt loam, and clay) using 40–150 g of pre-oven-dried soil, which was subsequently rehydrated to 10 % and 20 % water content. The shift in the isotopic composition of these tests ranged between −0.04 ‰ and 0.07 ‰ for δ18O and 0.4 ‰ and 1.3 ‰ for δ2H, with the standard deviations of ± (0.08–0.25) ‰ and ± (0.34–0.58) ‰ for δ18O and δ2H, respectively. The results exhibit high accuracy, which makes this method suitable for high-precision studies where unambiguous determination of the water origin is required.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10501 - Hydrology

Projekt

<a href="/cs/project/GA22-12837S" target="_blank" >GA22-12837S: Hydrologická a biogeochemická odezva horských rašelinišť na změny klimatu</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Hydrology and Earth System Sciences

ISSN

1027-5606

e-ISSN

1607-7938

Svazek periodika

29

Číslo periodika v rámci svazku

13

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

18

Strana od-do

2863-2880

Kód UT WoS článku

001524176000001

EID výsledku v databázi Scopus

2-s2.0-105017226503