Issue 6, 2020

Development of a method for the direct determination of fluorine in solid samples using electrothermal vaporization coupled to inductively coupled plasma optical emission spectrometry

Abstract

For the first time, electrothermal vaporization (ETV) coupled to inductively coupled plasma optical emission spectrometry (ICPOES) was used to directly detect fluorine (F) in solid samples. Atomic emission was employed for the determination of F by ICPOES, due to the high ionization potential of F. Small amounts (2 mg) of NIST 8432 (Corn Starch) standard reference material were weighed into the graphite boats for direct insertion into the ETV furnace. The optimized ETV program included a pyrolysis step (250 °C for 15 s) and a vaporization step (2200 °C for 20 s). The Ar 404.442 nm emission line was employed for point-by-point internal standardization, to compensate for sample loading effects on the plasma. The resulting peak area of the transient F emission signal during the vaporization step was then integrated for F determination. External calibration was performed using DUWF-1 (Durum Wheat Flour) standard reference material. To further broaden the applicability of ETV-ICPOES, an alternative method was developed enabling calibration with standard solutions based on the peak area of the F peak observed during the drying step. This was then used to quantify F in solid DUWF-1 using the sum of the peak areas observed during the pyrolysis and vaporization steps. This method allows quick screening of F in plant-based materials using ETV-ICPOES.

Graphical abstract: Development of a method for the direct determination of fluorine in solid samples using electrothermal vaporization coupled to inductively coupled plasma optical emission spectrometry

Article information

Article type
Technical Note
Submitted
01 Mar 2020
Accepted
17 Apr 2020
First published
17 Apr 2020

J. Anal. At. Spectrom., 2020,35, 1097-1102

Development of a method for the direct determination of fluorine in solid samples using electrothermal vaporization coupled to inductively coupled plasma optical emission spectrometry

P. Maung and D. Beauchemin, J. Anal. At. Spectrom., 2020, 35, 1097 DOI: 10.1039/D0JA00079E

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements