Detail publikace

Detection of fluorine using laser-induced breakdown spectroscopy and Raman spectroscopy

Originální název

Detection of fluorine using laser-induced breakdown spectroscopy and Raman spectroscopy

Anglický název

Detection of fluorine using laser-induced breakdown spectroscopy and Raman spectroscopy

Jazyk

en

Originální abstrakt

In general, the detection of F and other halogens is challenging through conventional techniques. In this paper, various approaches for the qualitative and quantitative analysis of F using the laser-induced breakdown spectroscopy (LIBS) technique were demonstrated. In LIBS, fluorine detection can be realized by means of atomic lines and molecular bands. For the purposes of our experiment, two sets of pellets with various contents of CaF2, CaCO3 and cellulose were analyzed using a lab-based LIBS system under a He atmosphere. The fluorine atomic line at 685.60 nm was correlated with CaF signals proving their close relationship. Consequently, the limits of detection were determined for both analytical signals. Moreover, conditions necessary for the quantification of F via CaF band signals were estimated. The dependence of the CaF signal on the varying ratio of Ca and F contents was investigated. Finally, a chip of a real CaF2 crystal was prepared and its surface was mapped with Raman and LIBS systems. The obtained elemental and molecular maps showed good numerical correlations. Thus, the yielded results validated the possibility to substitute the fluorine atomic line by non-conventional CaF molecular bands in the qualitative and quantitative LIBS analysis of fluorine.

Anglický abstrakt

In general, the detection of F and other halogens is challenging through conventional techniques. In this paper, various approaches for the qualitative and quantitative analysis of F using the laser-induced breakdown spectroscopy (LIBS) technique were demonstrated. In LIBS, fluorine detection can be realized by means of atomic lines and molecular bands. For the purposes of our experiment, two sets of pellets with various contents of CaF2, CaCO3 and cellulose were analyzed using a lab-based LIBS system under a He atmosphere. The fluorine atomic line at 685.60 nm was correlated with CaF signals proving their close relationship. Consequently, the limits of detection were determined for both analytical signals. Moreover, conditions necessary for the quantification of F via CaF band signals were estimated. The dependence of the CaF signal on the varying ratio of Ca and F contents was investigated. Finally, a chip of a real CaF2 crystal was prepared and its surface was mapped with Raman and LIBS systems. The obtained elemental and molecular maps showed good numerical correlations. Thus, the yielded results validated the possibility to substitute the fluorine atomic line by non-conventional CaF molecular bands in the qualitative and quantitative LIBS analysis of fluorine.

Dokumenty

BibTex


@article{BUT138856,
  author="Pavel {Pořízka} and Ladislav {Čelko} and Karel {Novotný} and Jozef {Kaiser} and Saara {Kaski} and Aleš {Hrdlička} and Pavlína {Modlitbová} and Lucia {Sládková} and Heikki {Häkkänen} and Jan {Novotný} and Petr {Gadas} and David {Prochazka}",
  title="Detection of fluorine using laser-induced breakdown spectroscopy and Raman spectroscopy",
  annote="In general, the detection of F and other halogens is challenging through conventional techniques. In this
paper, various approaches for the qualitative and quantitative analysis of F using the laser-induced
breakdown spectroscopy (LIBS) technique were demonstrated. In LIBS, fluorine detection can be realized
by means of atomic lines and molecular bands. For the purposes of our experiment, two sets of pellets
with various contents of CaF2, CaCO3 and cellulose were analyzed using a lab-based LIBS system under
a He atmosphere. The fluorine atomic line at 685.60 nm was correlated with CaF signals proving their
close relationship. Consequently, the limits of detection were determined for both analytical signals.
Moreover, conditions necessary for the quantification of F via CaF band signals were estimated. The
dependence of the CaF signal on the varying ratio of Ca and F contents was investigated. Finally, a chip
of a real CaF2 crystal was prepared and its surface was mapped with Raman and LIBS systems. The
obtained elemental and molecular maps showed good numerical correlations. Thus, the yielded results
validated the possibility to substitute the fluorine atomic line by non-conventional CaF molecular bands
in the qualitative and quantitative LIBS analysis of fluorine.",
  chapter="138856",
  doi="10.1039/c7ja00200a",
  number="10",
  volume="32",
  year="2017",
  month="july",
  pages="1966--1974",
  type="journal article in Web of Science"
}