An in situ Optical Emission Spectroscopy (OES) characterization was performed on Pulsed-Laser Ablation (PLA) process used for fullerene-like CNx thin film deposition at nitrogen pressures within the 5 – 100 mTorr range. Plumes were generated by ablation of pyrolytic graphite (99.99%) target using a (500 mJ, 7 ns, 1064 nm) Nd: YAG-pulsed laser. The spectra from the plume show, essentially, the p...

Spatially resolved optical emission spectroscopy OES has been used to investigate the gas phase chemistry and composition in a microwave activated CH4 /Ar /H2 plasma operating at moderate power densities 30 W cm−3 and pressures 175 Torr during chemical vapor deposition of polycrystalline diamond. Several tracer species are monitored in order to gain information about the plasma. Relative concen...

As a promising pulsed sputter deposition technique, High-Power Impulse Magnetron Sputtering (HiPIMS) required an extensive time-resolved plasma characterization. Being essentially non-intrusive, optical plasma diagnostics methods posses in particular the timeand spaceresolution(s) which normally exceed the typical needs of a typical HiPIMS geometry [1] and, therefore, can be readily applied for...

A method is described for the determination of Au, Pt, Pd, Ru and Rh in a converter matte sample, using inductively coupled plasma optical emission spectrometry (ICP-OES), with Y or Sc as internal standard. The results obtained by this method are discussed and compared with values obtained by an independent laboratory. The efficiency of internal standardization was evaluated by varying the oper...

Previous studies have demonstrated that sharps-related infectious disease is a global concern. Several papers have also reported that students are at a higher risk than healthcare workers. The prevalence of sharps exposure in China, however, is unknown. This study explored the incidence of sharps exposure and its related risk factors among students in all academic years and majors at a medical ...

Zinc (Zn) is essential for all life forms, including humans. It is estimated that around two billion people are deficient in their Zn intake. Human dietary Zn intake relies heavily on plants, which in many developing countries consists mainly of cereals. The inner part of cereal grain, the endosperm, is the part that is eaten after milling but contains only a quarter of the total grain Zn. Here...

In this review, a full discussion and update of the state-of-the-art of gas chromatography (GC) coupled to all known plasma spectrometers is presented. A brief introductive discussion of the advantages and disadvantages of GC–plasma interfaces, as well as types of plasmas and mass spectrometers, is given. The plasma-based techniques covered include inductively coupled plasma mass spectrometry (...

An analytical protocol for the accurate and precise determination of Si in naphthas is presented by using ICP-OES, optimizing from the sample preparation to the measurement conditions, in order to be able to analyze for the first time silicon contents below 100µgkg-1 in a relatively short time thus being used as a control method. In the petrochemical industry, silicon can be present as a contam...