Raman microspectrometric investigation of urea in calcite and gypsum powder matrices

Abstract

Raman microspectrometry was used for the nondestructive detection of urea in artificially prepared mineral matrices. The detection limit for urea in artificial powder mixtures was 1 wt% for both calcite and gypsum.

In the case of measurements through the monocrystals, the detection limit was between 1 and 5 wt% for calcite.

Keywords

• Raman microspectrometric investigation
• urea
• calcite
• gypsum
• matrices