Beware of effects on isotopes of dissolved oxygen during storage of natural iron-rich water samples: A technical note.
Beware of effects on isotopes of dissolved oxygen during storage of natural iron-rich water samples: A technical note.
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注意天然富铁水样储存过程中对溶解氧同位素的影响:技术说明
DOI:
10.1002/rcm.9024
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Martinez
中科院分区:
文献类型:
--
作者:
Köhler;Piatka;Martinez
RationaleInvestigations of the isotope ratios of dissolved oxygen (δ18ODO) provide valuable information about the oxygen cycle in aquatic systems. However, oxidation of Fe(II) may change pristine δ18ODOvalues during storage and can lead to a misinterpretation. We sampled an Fe(II)‐rich spring system and measured δ18ODOvalues at various time intervals in order to determine influences of Fe‐oxidation.MethodsWater samples were collected from an Fe‐rich spring and related stream and the δ18ODOvalues were measured in fresh, 4‐ and 13‐day‐old samples with an isotope ratio mass spectrometer. Three replicates were measured for each sample with a 1σ of ± 0.2‰. On‐site parameters and Fe(II) contents were also measured over the course of the spring system by multi‐parameter probes and spectrophotometry.ResultsThe δ18ODOvalues over the course of the spring system in fresh, 4‐ and 13‐day‐old samples revealed differences of up to 8‰. We explain this increase by the consumption of DO by Fe(II)‐oxidation. After a flow length of 85 m the differences in δ18ODOvalues between fresh and older samples decreased because most of the Fe(II) was consumed.ConclusionsFalse interpretations of δ18ODOvalues are possible if Fe‐rich water samples are measured after too long storage, and we recommend measurement immediately after sampling.
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DOI:
10.1080/03067318908026878
发表时间:
1989-01-01
影响因子:
2.6
作者:
KAMPBELL, DH;WILSON, JT;VANDEGRIFT, SA
通讯作者:
VANDEGRIFT, SA
DOI:
10.1016/j.scitotenv.2018.03.230
发表时间:
2018-09
期刊:
The Science of the total environment
影响因子:
--
作者:
Michael Mader;André M. Roberts;David Porst;C. Schmidt;N. Trauth;R. van Geldern;J. Barth
通讯作者:
Michael Mader;André M. Roberts;David Porst;C. Schmidt;N. Trauth;R. van Geldern;J. Barth
影响因子:
5.1
作者:
Schwerna;Buchholz;van Geldern;J.A.C.
通讯作者:
J.A.C.
影响因子:
2.6
作者:
L. Wassenaar;M. Hendry
通讯作者:
M. Hendry
影响因子:
5
作者:
Oba, Yasuhiro;Poulson, Simon R.
通讯作者:
Poulson, Simon R.