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| Description
| - This study evaluated between-sample memory in isotopic measurements of 2H and 18O in water samples by laser spectroscopy. Ten isotopically depleted water samples spanning a broad range of oxygen and hydrogen isotopic compositions were measured by three generations of offaxis integrated cavity output spectroscopy and cavity ringdown spectroscopy instruments. The analysis procedure encompassed small (less than 2permille for 2H and 1permille for 18O) and large (up to 201permille for 2H and 25permille for 18O) differences in isotopic compositions between adjacent sample vials. Samples were injected 18 times each, and the betweensample memory effect was quantified for each analysis run. Results showed that samples adversely affected by betweensample isotopic differences stabilised after seven-eight injections. The between-sample memory effect ranged from 14% and 9% for 2H and 18O measurements, respectively, but declined to negligible carryover (between 0.1% and 0.3% for both isotopes) when the first ten injections of each sample were discarded. The measurement variability (range and standard deviation) was strongly dependent on the isotopic difference between adjacent vials. Standard deviations were up to 7.5permillefor 2H and 0.54permille for 18O when all injections were retained in the computation of the reportable -value, but a significant increase in measurement precision (standard deviation in the range 0.1 permille-1.0permille for 2H and 0.05permille- 0.17permillefor 18O) was obtained when the first eight injections were discarded. In conclusion, this study provided a practical solution to mitigate between-sample memory effects in the isotopic analysis of water samples by laser spectroscopy.
- This study evaluated between-sample memory in isotopic measurements of 2H and 18O in water samples by laser spectroscopy. Ten isotopically depleted water samples spanning a broad range of oxygen and hydrogen isotopic compositions were measured by three generations of offaxis integrated cavity output spectroscopy and cavity ringdown spectroscopy instruments. The analysis procedure encompassed small (less than 2permille for 2H and 1permille for 18O) and large (up to 201permille for 2H and 25permille for 18O) differences in isotopic compositions between adjacent sample vials. Samples were injected 18 times each, and the betweensample memory effect was quantified for each analysis run. Results showed that samples adversely affected by betweensample isotopic differences stabilised after seven-eight injections. The between-sample memory effect ranged from 14% and 9% for 2H and 18O measurements, respectively, but declined to negligible carryover (between 0.1% and 0.3% for both isotopes) when the first ten injections of each sample were discarded. The measurement variability (range and standard deviation) was strongly dependent on the isotopic difference between adjacent vials. Standard deviations were up to 7.5permillefor 2H and 0.54permille for 18O when all injections were retained in the computation of the reportable -value, but a significant increase in measurement precision (standard deviation in the range 0.1 permille-1.0permille for 2H and 0.05permille- 0.17permillefor 18O) was obtained when the first eight injections were discarded. In conclusion, this study provided a practical solution to mitigate between-sample memory effects in the isotopic analysis of water samples by laser spectroscopy. (en)
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| Title
| - Technical Note: Evaluation of between-sample memory effects in the analysis of 2H and 18O of water samples measured by laser spectroscopes
- Technical Note: Evaluation of between-sample memory effects in the analysis of 2H and 18O of water samples measured by laser spectroscopes (en)
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| skos:prefLabel
| - Technical Note: Evaluation of between-sample memory effects in the analysis of 2H and 18O of water samples measured by laser spectroscopes
- Technical Note: Evaluation of between-sample memory effects in the analysis of 2H and 18O of water samples measured by laser spectroscopes (en)
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| skos:notation
| - RIV/68407700:21110/12:00196762!RIV13-MSM-21110___
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| http://linked.open...avai/predkladatel
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/68407700:21110/12:00196762
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - laser spectroscopy; memory effect; stable isotope; oxygen; hydrogen (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...odStatuVydavatele
| - DE - Spolková republika Německo
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/nazevZdroje
| - Hydrology and Earth System Sciences
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...UplatneniVysledku
| |
| http://linked.open...v/svazekPeriodika
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| http://linked.open...iv/tvurceVysledku
| - Sobotková, Martina
- Šanda, Martin
- Bogaard, TA
- Bonazza, M.
- Borga, M.
- Fischer, BMC
- Gobbi, A.
- Mantese, N.
- Michelini, M.
- Penna, D.
- Stenni, B.
- Wassenaar, LI
- Wrede, S.
- Zuecco, G.
- Čejková, B.
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| http://linked.open...ain/vavai/riv/wos
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| http://linked.open...n/vavai/riv/zamer
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| issn
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| number of pages
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| http://bibframe.org/vocab/doi
| - 10.5194/hess-16-3925-2012
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| http://localhost/t...ganizacniJednotka
| |
| is http://linked.open...avai/riv/vysledek
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