Detection of fluorine emission lines from Grimm-type glow-discharge plasmas — use of neon as the plasma gas

Wagatsuma, Kazuaki; Hirokawa, Kichinosuke; Yamashita, Noboru

doi:10.1016/0003-2670(95)00623-0

Cited by 32 publications

(16 citation statements)

References 16 publications

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“…36 Light emissions of characteristic wavelengths were monitored throughout the analysis with a sampling time of 0.1 s to obtain depth profiles. The wavelengths of spectral lines used were 121.567 nm for hydrogen, 165.701 nm for carbon, 130.217 nm for oxygen, 685.602 nm for fluorine, 178.287 nm for phosphorus, 385.991 nm for iron, and 317.035 nm for molybdenum.…”

Section: Methodsmentioning

confidence: 99%

Formation of Porous Anodic Films on Carbon Steels and Their Application to Corrosion Protection Composite Coatings Formed with Polypyrrole

Konno

Farag

Tsuji

et al. 2016

J. Electrochem. Soc.

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The growth behavior of nanoporous anodic films on carbon steel containing 0.213 mass% carbon has been examined. The films were grown by anodizing in an ethylene glycol (EG) electrolyte containing 0.1 mol dm −3 NH 4 F and 0.5 mol dm −3 H 2 O. The steel contains carbide precipitates with sizes in the range 50-800 nm. The anodic film formed on the carbide phase grew more slowly and was more chemically soluble during anodizing, resulting in submicrometer pits on the anodic film. The nanoporous morphology of the anodic films formed on an α-Fe matrix resembled those formed on iron. Heat treatment of the anodized specimens caused transformation of the chemically soluble fluoride-containing amorphous or poorly crystalline anodic films to crystalline oxide films containing α-Fe 2 O 3 and Fe 3 O 4 . Polypyrrole (PPy) was electropolymerized on the transformed surfaces to form a corrosion-protective composite coating. The resultant specimens coated with the composite coating showed improved durability compared to passivated steel with a PPy coating. Porous oxide films formed on aluminum and magnesium alloys by anodizing have been extensively studied for their ability to protect alloys from corrosion and wear; in addition, an anodizing process is of fundamental interest for the growth of self-ordered porous films. 1-3Recently, attention has been drawn to the formation of highly ordered nanoporous structures on aluminum, which are formed by the anodizing process, and their use in nanoscience and nanotechnology. 4 Furthermore, the formation of self-ordered nanoporous oxide films on a range of metals, including titanium, 5 zirconium, 6-8 niobium, 9 tantalum, 10 tungsten is also of interest. 11,12Iron is the most widely used metal. Recently, self-ordered nanostructured oxide films have been developed on iron using organic electrolytes containing fluoride and trace amounts of water. [13][14][15][16][17][18][19][20][21][22][23][24][25][26] Depending upon the anodizing conditions, either nanoporous or nanotubular anodic films are formed on iron. 14,18,24,27 The as-formed anodic films are often amorphous and contain a relatively high concentration of fluoride species; however, such films are not chemically stable. Heat treatment of the anodized iron samples causes crystallization of the amorphous anodic film, forming mainly α-Fe 2 O 3 .16,17,21 α-Fe 2 O 3 is a promising material for solar-driven water splitting due to its low bandgap, low cost, abundance, and high chemical stability; consequently, nanostructured porous α-Fe 2 O 3 films formed by anodizing and subsequent heat-treatment have recently attracted much attention. 17,18 In addition to photocatalytic applications, porous anodic films on iron can be used to protect iron and steel from corrosion. Iron and steel alloys are often coated with paints to protect them from environmental corrosion. In addition, interest in the use of conducting polymer coatings has increased because they provide anodic protection due to their oxidizing ability; in addition, they act as a physical ba...

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Section: Methodsmentioning

confidence: 99%

Formation of Porous Anodic Films on Carbon Steels and Their Application to Corrosion Protection Composite Coatings Formed with Polypyrrole

Konno

Farag

Tsuji

et al. 2016

J. Electrochem. Soc.

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“…Exciting emission lines of fluorine requires a rather large excitation energy [23], and there are no sensitive analytical lines to be selected for GD-OES analysis. Wagatsuma et al have shown that atomic and ionic lines of F can be excited more efficiently in a neon plasma [24].…”

Section: Physics Of Fluorine Ion Formationmentioning

confidence: 99%

Detection of negative ions in glow discharge mass spectrometry for analysis of solid specimens

et al. 2009

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“…For fluorine, its quantification in toothpaste (Mello et al, 2013; Gondal et al, 2014) dental materials (Funato et al, 2015) for medical applications and in tooth enamel and bones for both medical and archeological purposes (Heckel et al, 2016) is of special note. Additionally, there are many fluorine‐containing commercial products such as polymers (Dolbier, 2005), lubricants (Wagatsuma, Hirokawa, & Yamashita, 1996), and pharmaceuticals (Zhou et al, 2016). Fluorine‐containing materials are currently being implemented in the development of novel ionic conductors with enhanced properties and/or targeted optical properties for ion batteries (Gschwind et al, 2016; Zhang, Reddy, & Fichtner, 2018) and laser instrumentation (Kitajima et al, 2017; Morozov et al, 2018), respectively.…”

Section: Introductionmentioning

confidence: 99%

Mass Spectrometry‐based Techniques for Direct Quantification of High Ionization Energy Elements in Solid Materials—challenges and Perspectives

Gubal

Chuchina

Sorokina

et al. 2020

Mass Spectrometry Reviews

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The determination of nonmetals, first of all, the most electronegative ones—nitrogen, oxygen, fluorine, chlorine, and bromine, poses the highest challenge for element analysis. These elements are characterized by high reactivity, volatility, high ionization energy, and the absence of intensive spectral lines in the optical spectral range. Conventional techniques of their quantification include considerable “wet chemistry” stages so the application of these techniques for the solid sample is highly laborious and prone to uncontrollable uncertainties. Additionally, current development in material science and other areas requires the quantification of the elements at lower levels with good sensitivity. Owing to their robustness and flexibility, mass spectrometry techniques provide vast possibilities for the quantification, spatial and isotopic analysis, including the solutions for direct analysis of solids. The current review focuses on the application of major mass spectrometric techniques for the quantification of N, O, F, Cl, and Br in solid samples. The following techniques are mainly considered: thermal ionization mass spectrometry (TIMS), isotope‐ratio MS (IRMS), secondary ion MS (SIMS), inductively coupled plasma MS (ICP‐MS), and glow discharge MS (GDMS); as the most accessible and widely applied for the purpose. General ionization issues, advantages, limitations, and novel methodological solutions are discussed. © 2020 John Wiley & Sons Ltd.

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Detection of fluorine emission lines from Grimm-type glow-discharge plasmas — use of neon as the plasma gas

Cited by 32 publications

References 16 publications

Formation of Porous Anodic Films on Carbon Steels and Their Application to Corrosion Protection Composite Coatings Formed with Polypyrrole

Formation of Porous Anodic Films on Carbon Steels and Their Application to Corrosion Protection Composite Coatings Formed with Polypyrrole

Detection of negative ions in glow discharge mass spectrometry for analysis of solid specimens

Mass Spectrometry‐based Techniques for Direct Quantification of High Ionization Energy Elements in Solid Materials—challenges and Perspectives

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