Inductively coupled plasma temperature

Plasma sources are also being iatroduced to produce plasmas at lower pressures and process temperatures. Inductively coupled plasma (ICP) and transformer-coupled plasma (TCP) are among the more commonly used sources, operating below 2.6 Pa (20 mTorr) (42). Low temperature RIE processiag operates between 26—67 Pa (200—500 mTorr). 

Argon, ultrahigh-temperature inductively coupled plasma. 

Spraying of ZrO(NO3)2 Solution into Plasma Argon, ultrahigh-temperature inductively coupled plasma. 

Kim et al. [56] synthesized SrTiOs films by ultrasound spray pyrolysis in combination with a high-temperature inductively coupled plasma (ICP) as the heat source (spray-ICP technique). It is a usefiil technique to synthesize SrTiOs films on fused quartz and sapphire and to control the crystallinity of the films. The films revealed preferred orientations depending on substrate locations, and were composed of fine crystallites with clear facets. 

Las Ebdon, E.H.V., Warren, G.R., Stephen, J.R., (1994), Analysis of geoporphyrins by high temperature inductively coupled plasma mass spectrometry and high performance liquid chromatography inductively coupled plasma mass spectrometry, /. Anal. At. Spectrom. 9, 939-943. 

To examine a sample by inductively coupled plasma mass spectrometry (ICP/MS) or inductively coupled plasma atomic-emission spectroscopy (ICP/AES) the sample must be transported into the flame of a plasma torch. Once in the flame, sample molecules are literally ripped apart to form ions of their constituent elements. These fragmentation and ionization processes are described in Chapters 6 and 14. To introduce samples into the center of the (plasma) flame, they must be transported there as gases, as finely dispersed droplets of a solution, or as fine particulate matter. The various methods of sample introduction are described here in three parts — A, B, and C Chapters 15, 16, and 17 — to cover gases, solutions (liquids), and solids. Some types of sample inlets are multipurpose and can be used with gases and liquids or with liquids and solids, but others have been designed specifically for only one kind of analysis. However, the principles governing the operation of inlet systems fall into a small number of categories. This chapter discusses specifically substances that are normally liquids at ambient temperatures. This sort of inlet is the commonest in analytical work. 

Thermal ionization. Takes place when an atom or molecule interacts with a heated surface or is in a gaseous environment at high temperatures. Examples of the latter include a capillary arc plasma, a microwave plasma, or an inductively coupled plasma. 

R. Trones, Development of Packed Capillary High Temperature Liquid Chromatography Utilizing Light Scattering and Inductively Coupled Plasma Mass Spectrometry Detection, PhD. Thesis, University of Oslo (1999). 

The chemical composition of the samples was determined using an inductively Coupled plasma atomic emission spectrometer (ICP-AES) JY 38 from Jobin Yvon. Specific surface area values were determined by BET method using a Micromeritics Instrument Corp. FlowSorb 2300. The basicity of the materials was studied by temperature programmed desorption (TPD) of C02 used as a probe molecule. The equipment was described in a previous work [7]. FTIR spectra of pellets pressed at 2.5xl08 Pa were recorded with a Vector 22 spectrometer from Brucker. The samples were diluted with KBr (lOOmg KBr - 1.5mg of the sample). 

The catalysts were characterized by inductively coupled plasma emission spectroscopy (ICP-ES Perkin Elmer Optima 3300RL) to determine cobalt content, x-ray diffraction (XRD Bruker A-500) with crystallite size determination using the Rietveld method, and temperature-programmed reduction (Zeton Altamira AMI-200) using 30 ml/min 10% H2/Ar and a ramp rate of 10°C/min. Surface area... 

For this purpose, all three catalyst supports were initially synthesized by a chemical vapor deposition (CVD) process and thereafter, using a wet impregnation method, loaded with cobalt as the active component for FTS. The as-synthesized Co/nanocatalysts were then characterized by applying electron microscopic analysis as well as temperature-programmed desorption, chemi- and physisorption measurements, thermogravimetric analysis, and inductively coupled plasma... 

The samples were air-dried at room temperature, sieved to < 63 pm and analysed by x-ray diffraction (XRD) and scanning electron microscopy combined with an energy dispersive system (SEM-EDS). For chemical analysis, samples were submitted to an extraction with Aqua Regia and analysed by inductively coupled plasma-optical emission spectrometry (ICP/OES). Firing experiments were performed following the procedure described by Brindley Brown (1980). 

NMR) [24], and Fourier transform-infrared (FT-IR) spectroscopy [25] are commonly applied methods. Analysis using mass spectrometric (MS) techniques has been achieved with gas chromatography-mass spectrometry (GC-MS), with chemical ionisation (Cl) often more informative than conventional electron impact (El) ionisation [26]. For the qualitative and quantitative characterisation of silicone polyether copolymers in particular, SEC, NMR, and FT-IR have also been demonstrated as useful and informative methods [22] and the application of high-temperature GC and inductively coupled plasma-atomic emission spectroscopy (ICP-AES) is also described [5]. 

Niu H, Houk RS (1994) Langmuir probe measurements of the ion extraction process in inductively coupled plasma mass spectrometry-I. Spatially resolved determination of electron density and electron temperature. Spectrochim Acta 498 1283-1303... 

The observed range of natural variations of 5 Ca is about 4 to 5%o in terrestrial materials and up to 50%o in high temperature condensate minerals in carbonaceous chondrites. The typical reproducibility of measurements is about +0.15%o. Broader application of Ca isotope measurements in geochemistry may be possible, particularly if the reproducibility can be improved to 0.05%o to 0.03%o. There is hope that this can be achieved either with inductively coupled plasma source mass spectrometry (Halicz et al. 1999) or with a new generation of multi-collector thermal ionization mass spectrometers (Heuser et al. 2002). 

R95031 Method 1638 Detennination of Trace Elements in Ambient Waters by Inductively Coupled Plasma-Mass Spectrometry 821R96005 Method 1638 Determination of Trace Elements in Ambient Waters by Inductively Coupled Plasma-Mass Spectrometry 821R96006 Method 1639 Determination of Trace Elements in Ambient Waters by Stabilized Temperature Graphite Furnace Atomic Absorption 821R96007 Method 1640 Determination of Trace Elements in Ambient Waters by On-Line Chelation Preconcentration and Inductively Coupled Plasma-Mass Spectrometry... 

Trones, R., Tangen, A., Lund, W., and Greibrokk, T., Packed capillary high-temperature liquid chromatography coupled to inductively coupled plasma mass spectrometry. Journal of Chromatography A 835(1-2), 105-112, 1999. 

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