Download or read book Resonant Laser Ablation of Metals for Trace Metal Analysis by Plasma Optical and Inductively Coupled Plasma Mass Spectrometries written by Danielle M. Cleveland and published by . This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Laser ablation Inductively coupled plasma Mass Spectrometry LA ICP MS of Oils and Tars Trace Metal Ratios Made Easy written by A. D. Bradley and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Laser Ablation Inductively Coupled Plasma Mass Spectrometry LA ICP MS as a Biomonitoring Tool written by Brianne Duncan and published by . This book was released on 2019 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) this research analyzed human cadaver hair for gadolinium and mice hair samples for cadmium. This project combined fundamental bench science (analytical chemistry and animal studies), and insight into exposures to an emerging contaminant. This study demonstrated the feasibility of LA-ICP-MS to measure time resolved exposure profiles in hair samples, potentially opening up a transformative new exposure analysis method for investigators conducting both bench toxicology and human epidemiology studies. Consecutive autopsy cases that presented at the University of Washington's medical department, who had received a gadolinium-based contrasting agent (GBCA) to enhance magnetic resonance imaging procedures constituted the human population component of this research. Multiple hairs from numerous subjects were analyzed using LA-ICP-MS along with calibration gels (bovine-skin based) and a standard reference material glass disc with trace metals. Overall analytical method accuracy and precision was acceptable. There was moderate correlation between gadolinium dose and area under the curve as well as gadolinium peak position and GBCA injection day. Hair concentrations were also compared to the other tissue (brain, bone, and skin) concentrations using linear regression. This analysis showed good correlation between hair gadolinium concentrations and brain and skin gadolinium concentrations. These results suggest that hair may serve as a safe and effective biomonitoring tissue for patients who receive GBCA injections. A mouse animal model was used to evaluate LA-ICP-MS as a biomonitoring tool in assessing cadmium exposure. Hair samples from mice that were part of a mechanistic toxicology study at the University of Washington were opportunistically obtained for inclusion in this analytical methods-focused element of the research. The mice were dosed with cadmium-spiked water at three levels (0, 0.6, and 3 mg/L) for 14 weeks before they were sacrificed. Hairs from seven mice were analyzed using LA-ICP-MS. This research showed that there were increasing concentrations of cadmium in hair shafts with increasing doses of cadmium in drinking water among mice.
Download or read book Resonant Laser Ablation written by Peter Stchur and published by . This book was released on 2003 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Practical Applications of Laser Ablation written by Dongfang Yang and published by BoD – Books on Demand. This book was released on 2021-07-14 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser ablation refers to the phenomenon in which an intense laser beam irradiates the surface of a solid to induce instant local removal of atoms by a thermal or non-thermal mechanism. Through eight chapters of original research studies and literature reviews written by experts from the international scientific community, this book presents theoretical and experimental aspects of the laser ablation phenomenon for processing material including pulsed laser deposition of thin films, laser surface modification, laser machining and laser nanoparticle formation. It also includes a study of the dynamics of plasmas generated by laser ablation of multi-component materials and an overview of laser-induced breakdown spectroscopy (LIBS) and laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) techniques for chemical analysis.
Download or read book Ultra violet and Resonant Laser Ablation Coupled with Microwave Induced Plasma Atomic Emission Spectrometry and Determination of Tin in Nickel Based Alloys by Electrothermal Atomizer Atomic Absorption and Laser Excited Atomic Fluorescence Spectrometry written by Xiaodong Yang and published by . This book was released on 1998 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Trace Metal Speciation Methods Applicable to Inductively Coupled Plasma Mass Spectrometry ICP MS written by Benny Lyvén and published by . This book was released on 1999 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis of Solids by Laser Ablation Inductively Coupled Plasma Mass Spectrometry written by David Brian Aeschliman and published by . This book was released on 2003 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation manuscript concentrates on methods to improve the utility of laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) as a rapid and accurate technique for quantitative analysis, forensic matching, and source attribution of solid samples. A solution calibration method for LA-ICP-MS is described that does not require matrix-matched solid standards or prior knowledge of sample composition. Desolvated particles from a microconcentric nebulizer and particles ablated from a localized position on a solid sample are mixed and introduced simultaneously to the ICP-MS. The transport of sample particulates from the ablation cell is measured online with piezoelectric microbalance to provide signal normalization. The relative accuracy of the quantitative analysis of NIST 612 glass and NIST 1264a steel is 3% and 12%, respectively, except for the elements Pb and Bi in steel. LA-ICP-MS is also used with principal components analysis (PCA) to simplify routine comparisons of forensic materials without time-consuming and destructive sample dissolution. The relative concentrations of trace elements in a solid sample are examined to provide a "fingerprint" composition that can be used for definitive identification and source matching of the material. Residue samples are matched to bulk materials using PCA. Variation of laser focus and PCA are also used to diagnose the presence and severity of elemental fractionation, which remains the most significant limitation for accurate quantitative analyses by LA-ICP-MS. High-speed photographs and video of an ICP are used to examine the validity of solution calibration for LA-ICP-MS and to study the trajectories, lifetimes, and emission behavior of particles traversing the plasma under a variety of conditions. No red emission clouds from YO are visible in the ICP when a 20-[mu]L min−1 nebulizer is used to spray a 2000 ppm aqueous yttrium solution, suggesting that the wet droplets from this nebulizer desolvate almost completely before entering the ICP. These desolvated particles appear to atomize and ionize like the small dry particulates from laser ablation. However, some large ablated particulates are observed to fly through the plasma intact, possibly contributing to elemental fractionation. Nevertheless, accurate calibration results using solution standards can be obtained for elements not affected by fractionation.
Download or read book Laser induced Breakdown Spectrometry written by Yong-Ill Lee and published by Nova Publishers. This book was released on 2000 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: When the output from a pulsed laser is forced onto a small spot of a sample, optically induced plasma, called laser-induced plasma (LIP) is formed at the surface. The plasma is formed when the laser power density exceeds the breakdown threshold value of the surface. The plasma can be used in sampling but is proposed as a source for atomic emission spectrometry (AES). In this case the technique is referred to as laser induced breakdown (emission) spectrometry (LIBS). The spectrally and temporally resolved detection and subsequent determination of the specific atomic emission reveals analytical information about the elemental composition of the sample, including solids, liquids and gases. This book is devoted to the analytical technique of laser-induced breakdown spectrometry. An introduction covering some basic principles of atomic emission spectrometry, analytical performance characteristics, and a comparison to more conventional techniques provides background information for the reader. The book is then conveniently divided into three parts: the first part described the instrumentation required and options available, the second part on fundamental studies of the laser plasma, and the third part on applications. Finally the future development of LIBS is presented.
Download or read book Laser Ablation ICP MS in Archaeological Research written by Robert J. Speakman and published by UNM Press. This book was released on 2005 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume brings together for the first time a collection of papers that specifically describe laser ablation, methods for data quantification, and applications to archaeological questions.
Download or read book Analysis of Glass Fragments by Laser Ablation Inductively Coupled Plasma Mass Spectrometry and Principal Component Analysis written by SJ. Bajic and published by . This book was released on 2005 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) is used to differentiate glass samples with similar optical and physical properties based on trace elemental composition. Laser ablation increases the number of elements that can be used for differentiation by eliminating problems commonly associated with dissolution and contamination. In this study, standard residential window and tempered glass samples that could not be differentiated by refractive index or density were successfully differentiated by LA-ICP-MS. The primary analysis approach used is Principal Component Analysis (PCA) of the complete mass spectrum. PCA, a multivariate analysis technique, provides rapid analysis of samples without time-consuming pair-wise comparison of calibrated analyses or prior knowledge of the elements present in the samples. Probabilities for positive association of the individual samples are derived from PCA. Utilization of the Q-statistic with PCA allowed us to distinguish all samples within the set to a certainty greater than the 99% confidence interval.
Download or read book Trace Analysis Using Laser Ablation Initiated Resonant Ionisation Mass Spectrometry written by Paul Thomas McCombes and published by . This book was released on 1991 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Laser Ablation Inductively Coupled Plasma Mass Spectrometry and Raman Spectroscopy Imaging of Biological Tissues written by Emma Lee Gorishek and published by . This book was released on 2016 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser Ablation Inductively coupled plasma mass spectrometry (LA-ICP-MS) and Raman spectroscopy are both powerful imaging techniques. Their applications are numerous and extremely potential in the field of biology. In order to improve upon LA-ICP-MS an in-house built cold cell was developed and its effectiveness studied by imaging Brassica napus seeds. To further apply LA-ICP-MS and Raman imaging to the field of entomology a prong gilled mayfly (Ephemeroptera: Leptophlebiidae) from the Róbalo River, located on Navarino Island in Chile, was studied. Analysis of both samples showcased LA-ICP-MS and Raman spectroscopy as effective instruments for imaging trace elements and larger molecules in biological samples respectively.
Download or read book Laser Ablation Inductively Coupled Plasma Mass Spectrometry and Its Application in Analysis of Liquid and Airborne Particulate Matter Sample written by 杜重未 and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Laser Ablation inductively Coupled Plasma mass Spectrometer LA ICP MS in Geosciences Further Improvement for Elemental Analysis written by Shitou Wu and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A quantitative reduction strategy consisting of Ratioing, Standardization, and Normalization (RSN) was proposed to process the LA-ICP-MS transient signal of NIST, MPI-DING, USGS and CGSG glass reference materials. The RSN strategy allows the quantitative reduction without knowing the concentration of internal standard prior to LA-ICP-MS analysis. The down-hole fractionations of the investigated glasses in initial 5-35s ablation period were insignificant and independent of the chosen internal standards under the given laser conditions. The analytical accuracy obtained from internal standardi ...
Download or read book Handbook of Radioactivity Analysis written by Michael F. L'Annunziata and published by Academic Press. This book was released on 2012-08-16 with total page 1420 pages. Available in PDF, EPUB and Kindle. Book excerpt: Authoritative reference providing the principles, practical techniques, and procedures for the accurate measurement of radioactivity.
Download or read book Investigations of Mineral Analysis by Laser Ablation Inductively Coupled Plasma Mass Spectrometry written by Teresa Emily Jeffries and published by . This book was released on 1996 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:
