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Geothermal sampling and analysis

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dc.contributor KenGen is
dc.contributor Jarðhitaskóli Háskóla Sameinuðu þjóðanna is
dc.contributor United Nations University is
dc.contributor United Nations University, Geothermal Training Programme is
dc.contributor.author Halldór Ármannsson 1942 is
dc.contributor.author Magnús Ólafsson 1952 is
dc.contributor.author Finnbogi Óskarsson 1978 is
dc.date.accessioned 2020-10-22T17:46:56Z
dc.date.available 2020-10-22T17:46:56Z
dc.date.issued 2019
dc.identifier.issn 1670-794x
dc.identifier.uri http://hdl.handle.net/10802/27186
dc.description Presented at SDG Short Course IV on Exploration and Development of Geothermal Resources, organized by UNU-GTP and KenGen, at Lake Bogoria and Lake Naivasha, Kenya, Nov. 13 – Dec. 3, 2019 is
dc.description.abstract Sampling and analysis provide the data for all geochemical interpretation and thus it is imperative that these tasks be performed by trained personnel with insight into possible errors. Different types of containers (glass or plastic, amber or transparent) and different pre-treatment (dilution, filtering, freezing, addition of chemicals) is needed for the various constituents determined. Some constituents need analysis shortly after collection either on the spot or in a near-by laboratory which may be a field laboratory. The most common analytical techniques employed for geothermal fluid samples that are likely to be available in most laboratories are titrimetry, UVVis spectrophotometry, atomic absorption spectrophotometry (AAS), ion chromatography (IC), electrometry and gas-solid chromatography (GSC). In recent years inductively coupled plasma has become widely used both with atomic emission spectrometry (ICP/AES) and mass spectrometry (ICP/MS) but this requires expensive equipment and these instruments, particularly the latter, tend to be run by large commercial laboratories on a commercial basis and it is quite common that samples are sent there for analysis, especially for major cations and trace elements. Stable isotopes are analysed for by mass spectrometry (MS) and radioactive isotopes by radiometry. These techniques are not available to all laboratories and are frequently carried out on a commercial basis. From the returns in the inter-laboratory comparison of analytical techniques carried out by the International Atomic Energy Agency in 2002 involving 31 laboratories working with geothermal samples it is clear that AAS is the most used technique for cation analysis but titrimetry and UVVis spectrophotometry for anion analysis is
dc.format.extent 1 rafrænt gagn (8 bls.). is
dc.language.iso en
dc.publisher United Nations University is
dc.relation.ispartof 991012006979706886
dc.relation.ispartofseries United Nations University., UNU Geothermal Training Programme, Iceland. Short Course ; SC-28
dc.relation.uri https://orkustofnun.is/gogn/unu-gtp-sc/UNU-GTP-SC-28-0502.pdf
dc.subject Jarðhiti is
dc.subject Jarðhitaleit is
dc.subject Jarðefnafræði is
dc.subject Sýnataka is
dc.subject Efnagreining is
dc.title Geothermal sampling and analysis en
dc.type Bók is
dc.identifier.gegnir 991012016719706886


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