Format:
93 S. = 3,8 MB, text, images
Edition:
[Electronic ed.]
Content:
In order to investigate crustal fluid-rock interactions an oxygen isotope microprobe was set up. Oygen is extracted from silicates by Ultra-Violet (UV)-laser fluorination and its isotropic 18/16-ration is determined using isotope ration monitoring Gas Chromatography Mass Spectrometry (irm-GC-MS). This technique enables an accurate in situ analysis of all types of silicates, including highly transparent minerals like quartz. To reduce the influence of fluorine derived blanks on isotopic measurements, 3000 nmol oxygen is liberated, while only 30 nmol ist finally used for isotopic analysis. This way, spatial resolution is set to 250 [my]m. Precision is about 0.2o/oo, while a single analysis takes less than 15 minutes ...
Note:
Göttingen, Univ., Diss., 2000
Language:
English
Keywords:
Quarz
;
Flüssigkeitseinschluss
;
Sauerstoffisotop
;
Mikroanalyse
;
Hochschulschrift
URN:
urn:nbn:de:gbv:7-webdoc-874-9
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