Injectors/Autosamplers 2815 Temperature Effects In LC 2815 Sample Preparation/Derivatization 2816 Microchip Technology in LC 2816 Automation 2817 Other Articles of Interest 2817 Columns 2817 Reviews 2817 Columns Materials, Effects, and Packing 2817 Supports 2817 Stationary Phases 2818 Ion-Exchange Phases 2819 Monolithic Columns 2819 Molecular Imprinted Polymer (MIP) Phases 2819 Tunable Stationa...

Background and aims: A selective and sensitive high performance liquid chromatography-electrospray ionization mass spectrometry method has been established for determination of methotrexate in human plasma. Methods: Methotrexate was extracted from plasma with acetonitrile. The mobile phase consisted of acetonitrile-water-formic acid 74: 25: 1(v/v). Twenty...

A key process in thin film silicon-based solar cell manufacturing is plasma enhanced chemical vapor deposition (PECVD) of the active layers. The deposition process can be monitored in situ by plasma diagnostics. Three types of complementary diagnostics, namely optical emission spectroscopy, mass spectrometry and non-linear extended electron dynamics are applied to an industrial-type PECVD react...

A simple and rapid method for the determination of Ba isotope abundances in water samples by inductively coupled plasma-optical emission spectrometry (ICP-OES) coupled with least-squares support vector machine regression (LS-SVM) is reported. By evaluation of emission lines of barium, it was found that the emission line at 493.408 nm provides the best results for the determination of Ba abundan...

Obtaining local soil-to-crop transfer factor (TF) is important because climates, soil types and vegetations influence on the factor. In this study, analyses of stable isotopes and natural radioisotopes in rice and wheat grains and the associated soils collected throughout Japan were carried out in order to obtain TF under equilibrium conditions. The studied samples had been collected for the me...

Vertically aligned carbon nanotubes (CNTs) were grown on Si substrates by radio frequency (RF) plasma enhanced chemical vapor deposition. We investigated plasma conditions suitable for CNT growth by measuring plasma parameters and observing optical emission spectrometry near the substrate. Comparison in plasma parameters was also made between a capacitively coupled plasma (CCP) and an inductive...

In this study we analysed mineral composition of bee pollen of different plant origin collected across Serbia using inductively coupled plasma - optical emission spectrometry. The most abundant elements were potassium, calcium, and magnesium. The samples were also exceptionally rich in iron and zinc, which are very important as nutrients. Judging by our findings, mineral composition of bee poll...

A simple and reliable multi-element procedure for determination of essential (Cr, Cu, Fe, Mg, Mn, Zn) and toxic (Al, Cd, Pb) elements in legumes by inductively coupled plasma-optical emission spectrometry (ICP-OES) was developed. In this contribution, four different digestion procedures were thoroughly investigated and accurately evaluated with respect to their affect on the analysis of legumes...

This paper presents a comparative description of different methods of determination of arsenic, antimony and selenium: spectrophotometric, electro-analytical (voltamperometry), activation analysis, atomic fluorescence and the methods of inductive or microwave-induced plasma in combination with different detection methods (emission or mass spectrometry). The description is based on literature da...

The concentration of iodine species can be measured using several different analysis methods. One of the most wellknown methods involves iodine titration with a thiosulfate solution. Total iodine can be analyzed using spectrometry, such as inductively coupled plasma-atomic emission spectrometry (ICP-AES), atomic absorption spectrometry (AAS) and inductively coupled plasma-mass spectrometry (ICP...