Optical Sensor for Characterizing the Phase Transition in Salted Solutions

We propose a new optical sensor to characterize the solid-liquid phase transition in salted solutions. The probe mainly consists of a Raman spectrometer that extracts the vibrational properties from the light scattered by the salty medium. The spectrum of the O – H stretching band was shown to be strongly affected by the introduction of NaCl and the temperature change as well. A parameter SD defined as the ratio of the integrated intensities of two parts of this band allows to study the temperature and concentration dependences of the phase transition. Then, an easy and efficient signal processing and the exploitation of a modified Boltzmann equation give information on the phase transition. Validations were done on solutions with varying concentration of NaCl.

• Publication year

  2010

• Venue

  Italian National Conference on Sensors

• Publication date

  2010-04-14

• Fields of study

  Physics, Materials Science, Chemistry, Computer Science, Medicine

• Identifiers
  DOI 10.3390/s100403815PMID 22319327PMCID 3274248
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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