Over het archief
Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.
Dit archief wordt uitgebouwd en beheerd volgens de principes van de Open Access Movement, en het daaruit ontstane Open Archives Initiative.
Basisinformatie over ‘Open Access to scholarly information'.
A simple method for high-precision isotopic analysis of chlorine via pneumatic nebulization multi-collector inductively coupled plasma-mass spectrometry
de Gois, J.S.; Costas-Rodriguez, M.; Vallelonga, P.; Borges, D.L.G.; Vanhaecke, F. (2016). A simple method for high-precision isotopic analysis of chlorine via pneumatic nebulization multi-collector inductively coupled plasma-mass spectrometry. J. Anal. At. Spectrom. 31(2): 537-542. https://dx.doi.org/10.1039/c5ja00408j
In: Journal of Analytical Atomic Spectrometry. Royal Society of Chemistry: London. ISSN 0267-9477; e-ISSN 1364-5544, meer
|  |
| Auteurs | | Top |
- de Gois, J.S., meer
- Costas-Rodriguez, M., meer
- Vallelonga, P.
|
- Borges, D.L.G.
- Vanhaecke, F., meer
|
|
| Abstract |
Chlorine isotope ratio measurement using multi-collector ICP-mass spectrometry (MC-ICP-MS) with sample introduction using traditional pneumatic nebulization suffers from spectral interference in addition to low sensitivity. Pronounced memory effects may jeopardize the accuracy of the results and/or the sample throughput. In this work, these limitations were overcome by using (i) high mass resolution (mass resolving power of about 10 000) to resolve spectral interference, (ii) 5 mmol L−1 NH4OH as wash solution to avoid memory effects and (iii) a Cl concentration of ≥70 mg L−1. The major cation load of seawater and chloride salts (NaCl, KCl) sample solutions was efficiently removed without affecting the original isotopic composition of Cl via cation exchange chromatography with Dowex® 50WX8 resin. The method developed was demonstrated to be accurate and precise, as attested by the measurement result for the 37Cl/35Cl isotope ratio in NIST SRM 975a (experimental value of 0.319765 ± 0.000022, compared to a reference value of 0.319768 ± 0.000187 and a precision of ∼0.007% RSD, n = 3), additionally, the δ37Cl value (vs. standard mean ocean chlorine, SMOC) was determined for five different standards; the values ranged from −0.54 to +0.89‰. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
