Premium
Calcium, Na, K and Mg Concentrations in Seawater by Inductively Coupled Plasma‐Atomic Emission Spectrometry: Applications to IAPSO Seawater Reference Material, Hydrothermal Fluids and Synthetic Seawater Solutions
Author(s) -
Besson Philippe,
Degboe Jefferson,
Berge Benjamin,
Chavagnac Valérie,
Fabre Sébastien,
Berger Gilles
Publication year - 2014
Publication title -
geostandards and geoanalytical research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.037
H-Index - 73
eISSN - 1751-908X
pISSN - 1639-4488
DOI - 10.1111/j.1751-908x.2013.00269.x
Subject(s) - seawater , chemistry , inductively coupled plasma , atomic absorption spectroscopy , inductively coupled plasma mass spectrometry , analytical chemistry (journal) , hydrothermal circulation , potassium , artificial seawater , strontium , titration , mass spectrometry , mineralogy , chromatography , inorganic chemistry , plasma , geology , oceanography , physics , organic chemistry , quantum mechanics , seismology
We report a measurement procedure to determine simultaneously the major cation concentrations (Na, Ca, K and Mg) of seawater‐derived solutions by inductively coupled plasma‐atomic emission spectrometry. The best results were obtained when the IAPSO (‘standard’) seawater reference material was diluted by thirty times with Milli‐Q ® water. We obtained an average reference value r K (the ratio of the mass fraction of potassium to that of chlorine, i.e., (g kg −1 )/(g kg −1 )) for IAPSO seawater of 0.0205 ± 0.0006 (2.9% RSD), not significantly different from 0.0206 ± 0.0005 (2.4% RSD) for seawater composition reported in the literature. The measured Na, Ca and Mg concentrations correspond to r Na , r Ca and r Mg values of 0.5406 ± 0.0026 (0.5% RSD), 0.02192 ± 0.00048 (2.2% RSD) and 0.06830 ± 0.00047 (0.7% RSD), respectively, in line with previous values measured by wet‐chemistry and atomic absorption spectrophotometry or wet‐chemical titration. Our measurement procedure was used successfully on synthetic seawater solutions and high‐temperature hydrothermal fluids.