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Showing 1 to 20 of 62 for “"ICP-AES"”.
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MULTIVARIATE CALIBRATION FOR ICP-AES
… of metals is now a major application area for ICP-AES, however, the technique suffers from both spectral and non-spectral interferences. This thesis details the application of univariate and multivariate calibration methods for the prediction of Pt, Pd, and Rh in acid-digested and of Au, Ag and …
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Improved boron 10 quantification via PGNAA and ICP-AES
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 1997.
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An Inductively Coupled Plasma Atomic Emission Spectrometer for the Detection of Nonmetals in the Vacuum Ultraviolet
… coupled plasma atomic emission spectrometry (ICP-AES) has emerged as a dominant spectroscopic technique for the determination of metals in a plethora of sample types. The bulk of the interest has been placed on trace metal analysis, and the analysis of nonmetals has been gaining increased …
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Microwave digestion methods for preparation of platinum ore samples for Icp analysis
… coupled plasma atomic-emission spectroscopy (ICP-AES). To reduce matrix interferences during analysis, a predigestion step with 50 mL of 1:1 nitric acid was introduced. Both ICP-AES and inductively plasma mass spectroscopy (ICP-MS) were used for analysis of sample extracts. ICP-AES analyses …
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OPTIMISATION OF THE INDUCTIVELY-COUPLED PLASMA FOR THE ANALYSIS OF SOLUTIONS AND SLURRIES
The application of inductively-coupled plasma (ICP) spectrometry for the analysis of solutions and slurries is reviewed. The critical parameters which affect analytical performance are identified and methods for the optimisation of the ICP for such applications demonstrated. Particle size of the …
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Assessment of coal liquefaction behavior through product characterization with hyphenated chromatographic/spectroscopic methods
… Coupled Plasma Atomic Emission Spectrometry (ICP-AES) and Size Exclusion Chromatography/ICP-AES (SEC/ICP-AES). Pates of basic nitrogen components in distillate and solvent-soluble residuum products were examined by nitrogen mass balance determinations, Gas Chromatography/Pourier Transform …
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A zero-bias spark source for direct solid sample introduction for inductively coupled plasma atomic emission spectrometry
… ablation device for the analysis of solids with ICP-AES. Direct solid analysis has an inherent advantage for ICP applications as it allows a dry plasma to be maintained. This helps minimize the background species present as many arise from the water and acids present in solution. The use of a …
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Ameliorating the toxic side-effects of cisplatin by systematically modulating its metabolism in human plasma with chemoprotective agents
… coupled plasma atomic emission spectrometer (ICP-AES), the effect of three chemoprotective agents − sodium thiosulfate (STS), N-acetyl-L-cysteine (NAC) and D-methionine − were investigated on the metabolism of the Pt-based anti-cancer drug cis-platin (CP) in human blood plasma in vitro. All …
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IN-SITU PRECONCENTRATION OF TRACE METALS IN NATURAL WATERS AND BRINES WITH ANALYSIS BY FLOW INJECTION ATOMIC SPECTROMETRY
Atomic spectrometric techniques such as ICP-MS offer exceptional sensitivity and multi-element capability for trace metal analysis but the formation of polyatomic ions (particularly below m/z = 80) can cause serious interferences. Such interfering species may be introduced via precursor atoms in …
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A method for determining elements for elemental signature analysis of groundwater and treated Lake Mead water
… inductively coupled plasma mass spectrometry (ICP-MS); Lake Mead is the primary water supply for the Las Vegas Valley. During the summer months, several large underground aquifers are used to supplement the Lake Mead water supply. Treated Lake Mead water is recharged during the low demand …
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Régészeti obszidiánok forrásterületének meghatározása
… az obszidiánok vizsgálati módszereit (NAA, ICP-OES, ICP-AES, LA-ICP-MS, PIGE, PIXE, PGAA), különös tekintettel a vizsgálati eredményeknek a proveniencia vizsgálatokban való felhasználhatóságukat. Végül néhány konkrét vizsgálaton keresztül, irodalmi példák segítségével bemutattam a fő- és …
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The microwave digestion of solids
… coupled plasma atomic emission spectroscopy (ICP-AES) involves the time consuming operation of digesting the samples in acid on a hot plate. However, much time saving has been demonstrated by the use of microwave digestion, and successful digestions have been achieved in 10% of the time …
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Environmental behavior of hafnium : the impact on the disposition of weapons-grade plutonium
… are studied via solubility experiments using ICP-AES. An upper bound for the stability constant of the first carbonate complex is determined. The solubility of hafnium oxide is investigated via solubility experiments using neutron activation analysis, which is also used to investigate the …
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PLASMA SPECTROCHEMICAL ANALYSIS OF SLURRIES
… current plasma-atomic emission spectrometry (ICP-AES, DCP-AES) and inductively coupled plasma-mass spectrometry (ICP-MS). Aqueous calibrants were used. Fundamental aspects were modelled. The particle size and dispersion of samples are the most important criteria in slurry nebulisation. The …
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Mass Balance of Major, Minor and Trace Elements During AFBC Combustion of Fuels
… coupled plasma-atomic emission spectrometry (ICP-AES) were checked for routine use. In this study, the ICP analysis values and XRF analysis values of major and minor elements in two kinds of coal and two kinds of limestone were compared. It was shown that over 95% closure of the mass balances …
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INVESTIGATION OF CHEMOMETRICS METHODS FOR CHARACTERISING DRIFT PHENOMENA IN iCK-AES
… coupled plasma atomic emission spectroscopy (ICP-AES) in order to develop novel correction procedures to aid routine analysis. Long-term drift of the analytical signal continues to be a potential disadvantage when using ICP-AES and often necessitates regular recalibration. The long-term …
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