Umbit is a mineral

Translations for "mineral“In the German» English Dictionary (Go to English »German)

OH in anhydrous minerals

The determination of low H (OH, H2O) concentrations in minerals or glasses using SIMS is difficult because the sample surface in the (imperfect) vacuum of the sample chamber is contaminated with H2O (in situ) and the values ​​are (much) too high for the H concentration would result.

However, because there are hardly any microanalytical methods to measure H in low concentrations (<100 μg / g) and because the sensitivity of the SIMS to H is very good, it is still worthwhile to measure H with the SIMS and the contamination is so low as humanly possible.

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OH in anhydrous minerals

The determination of low H (OH, H2O) concentrations in minerals or glasses by SIMS is hampered by (in situ) contamination of the sample surface with H2O in the (far from perfect) vacuum in the sample chamber.

But since there are hardly any micro-analysis methods for low concentrations of H (<100 μg / g) and because of the high sensitivity of SIMS for H it is worthwhile to use the SIMS for H analyzes and to try and keep the contamination as low as possible.

www.rzuser.uni-heidelberg.de