Analysis of geothermal waters by spark source mass spectrometryAnalysis of geothermal waters by spark source mass spectrometry
Faculty of Sciences. Chemistry
Plasma, laser ablation and surface modeling - Antwerp (PLASMANT)
AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
Fresenius' Zeitschrift für analytische Chemie. - München, 1947 - 1989
309(1981):4, p. 291-294
University of Antwerp
Although the analysis of thermal water by spark-source mass spectrometry (SSMS) is rather timeconsuming, it allows the detection of about 20 elements of geochemical interest down to the ppb-level. A physical preconcentration is proposed in order to collect elements having quite different chemical properties, e.g. alkalis, transition elements, and elements occurring in anionic form. The relative sensitivity factors appear to be rather independent of the salt content of the graphite electrodes. Contrary to neutron activation analysis, SSMS has a quite uniform elemental sensitivity, and allows to determine elements for which neutron activation is not suitable, e.g. Sn and Pb. The precision of SSMS is however by a factor of about 2 worse than that obtained for neutron activation.