Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Measurement Of Elemental Speciation By Liquid Chromatography
Download Measurement Of Elemental Speciation By Liquid Chromatography full books in PDF, epub, and Kindle. Read online Measurement Of Elemental Speciation By Liquid Chromatography ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Measurement of Elemental Speciation by Liquid Chromatography -- Inductively Coupled Plasma Mass Spectrometry (LC-ICP-MS) with the Direct Injection Nebulizer (DIN). by :
Download or read book Measurement of Elemental Speciation by Liquid Chromatography -- Inductively Coupled Plasma Mass Spectrometry (LC-ICP-MS) with the Direct Injection Nebulizer (DIN). written by and published by . This book was released on 1993 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis is divided into 4 parts: elemental speciation, speciation of mercury and lead compounds by microbore column LC-ICP-MS with direct injection nebulization, spatially resolved measurements of size and velocity distributions of aerosol droplets from a direct injection nebulizer, and elemental speciation by anion exchange and size exclusion chromatography with detection by ICP-MS with direct injection nebulization. Tabs, figs, refs.
Book Synopsis Measurement of Elemental Speciation by Liquid Chromatography by : Sam Chiu-Kin Shum
Download or read book Measurement of Elemental Speciation by Liquid Chromatography written by Sam Chiu-Kin Shum and published by . This book was released on 1993 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook of Elemental Speciation by :
Download or read book Handbook of Elemental Speciation written by and published by John Wiley & Sons. This book was released on 2004-01-09 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt: This international collection of chapters comprehensively covers different aspects of procedures for speciation analysis at all levels starting from sample collection and storage, through sample preparation approaches to render the species chromatographable, principles of separation techniques used in speciation analysis, to the element specific detection. International renowned editors and contributors Includes coverage of electrochemical methods, biosensors for metal ions, radioisotope techniques and direct solid speciation techniques Provides information on quality assurance and risk assessment, and speciation-relevant legislation Each chapter is a stand-alone reference covering a given facet of elemental speciation analysis written by an expert in a given field with the volume as a whole providing an excellent introductory text and reference handbook.
Book Synopsis Elemental Speciation by : Joseph A. Caruso
Download or read book Elemental Speciation written by Joseph A. Caruso and published by Elsevier Science Limited. This book was released on 2000 with total page 581 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hardbound. This book provides a comprehensive discussion of the major aspects involved in elemental speciation. Sample preparation, separation techniques, instrumentation and quality assurance are all discussed. In addition, individual chapters are devoted to speciation of environmental samples and speciation of biological, clinical, and nutritional samples. Individual chapters are written by leaders in the field, and the book has been organized so that the reader may learn how to collect a sample and prepare it. Ways to separate and detect analytes of interest, and steps to take to ensure the validity of the measurements are also discussed. This book is unique in its comprehensive treatment of this subject.
Book Synopsis Elemental Speciation by Chromatographic Separations Interfaced to Inductively Coupled Plasma Mass Spectrometry by :
Download or read book Elemental Speciation by Chromatographic Separations Interfaced to Inductively Coupled Plasma Mass Spectrometry written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The complete characterization of a metal requires the elucidation of properties such as its oxidation state or complex form. Elemental speciation has been defined as the analyses that lead to determining the distribution of an element2s particular chemical species in a sample. This information can be of great use when assessing the risks and benefits associated with particular elements. A large number of methods have been developed which utilize a multitude of different separation mechanisms and detection instruments. Both high performance liquid chromatography and gas chromatography were the primary separation techniques utilized in this work. Because of its robustness, sensitivity and multi-elemental capabilities, the inductively coupled plasma mass spectrometer has been routinely used for trace elemental analysis and as part of hyphenated systems for speciation analysis. Sample preparation is a critical area in elemental speciation analysis. It is important that techniques used to extract elemental species are as efficient in comparison to the harsh digestions employed in total elemental analysis. Microwave assisted extractions and enzymatic digestions have become popular ways in which to achieve this. Concentration may also be necessary as levels of elemental species may be quite low. An emerging technique to accomplish this is solid phase microextraction. The above techniques were used separately or in combination to speciate several important classes of compounds. These included the selenoamino acids (which are considered the most bioavailable form of selenium), the brominated flame retardants (bromine species incorporated into plastics to prevent fires), the organophosphorus pesticides (phosphorus compounds used in farming) and two oxidation states of chromium (one essential and one carcinogenic).
Book Synopsis Liquid Chromatography by : B. Michalke
Download or read book Liquid Chromatography written by B. Michalke and published by Elsevier Inc. Chapters. This book was released on 2013-01-08 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: This chapter describes strategies and methods for speciation investigations using mainly hyphenated techniques of liquid chromatography with element-specific detection. Complete speciation schemes are discussed, starting with the sources of error and problem solutions for sampling and ending with more dimensional, orthogonally chosen coupled-speciation techniques for quality controlled results. The focus in each section is directed to the specific problems being faced with respect to speciation analysis: species stability during sample storage and processing, the choice of the most suitable speciation approaches (direct methods or hyphenated techniques), species separation techniques ranging from ultrafiltration to various forms of liquid chromatography, and capillary electrophoresis, discussing their advantageous as well as their (undesired) potential of changing species. Further, problems in interfacing to element-specific detectors, mainly plasma-based detectors like ICP OES and ICP MS are reported. The chapter concludes with aspects of quality control, including sources of errors and strategies to overcome such problems, such as orthogonal speciation concepts.
Book Synopsis Hyphenated Techniques in Speciation Analysis by : Ryszard Lobinski
Download or read book Hyphenated Techniques in Speciation Analysis written by Ryszard Lobinski and published by Royal Society of Chemistry. This book was released on 2007-10-31 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: Speciation analysis is a field of trace element analytical chemistry that deals with detection, identification and determination of individual chemical forms of metals and metalloids. There has been increased awareness of the importance of elemental speciation over the last 20 years and this has lead to growing demand for analytical techniques capable of providing species-specific information. Hyphenated Techniques in Speciation Analysis offers a brief but comprehensive overview of hyphenated techniques and their various applications for the determination of chemical forms of trace elements. It brings a succinct presentation of the concept of speciation analysis, gives an overview of techniques based on coupling of chromatography with element and molecule specific detection and summarises their applications in the fields of environmental and industrial chemistry, biochemistry, nutrition, toxicology and medicine. Fully referenced, Hyphenated Techniques in Speciation Analysis is an invaluable introduction to elemental speciation analysis and also provides a practising analyst with a critical overview of research carried out in the field.
Book Synopsis Trace Elemental Speciation Using Chromatography/capillary Electrophoresis Coupled to Inductively Coupled Plasma Mass Spectometry for Food, Pharmaceutical and Environmental Analysis by :
Download or read book Trace Elemental Speciation Using Chromatography/capillary Electrophoresis Coupled to Inductively Coupled Plasma Mass Spectometry for Food, Pharmaceutical and Environmental Analysis written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Trace element speciation has become an important issue in different fields of science. Research interests have moved from total element composition of the sample toward characterization of species that are responsible for biochemical and geochemical behavior of the elements. Information on elemental speciation in environmental and clinical material is vital in studies on possible mechanisms of element transport and/or degradation in the environment, element bioavailability and on possible metabolic pathways within living organisms. The current analytical approach for speciation analysis involves using hyphenation techniques, based on the combination of separation and detection steps into one while operating an on-line system. Both high performance liquid chromatography and capillary electrophoresis were the primary separation techniques utilized in this work. The inductively coupled plasma mass spectrometer was the technique of choice for element specific detection and as part of hyphenated systems for speciation analysis. The use of inductively coupled plasma mass spectrometry allows extremely low detection limits for the majority of the elements, has the advantage of linearity over a wide dynamic range, multi-elemental detection capability and the ability to perform isotopic analysis. The two most important features of an analytical tool suitable for speciation analysis are good selectivity and high sensitivity. However, the design of the analytical procedure is difficult, owing to the complex composition of the real-world sample, the diversity of physicochemical forms of the element, their lability and low concentrations. Sample preparation methods such as solid phase microextraction (SPME), solid phase extraction (SPE) and liquid-liquid extraction have been commonly used to overcome some of these difficulties. Thus improved sample collection, extraction, and purification techniques can help to overcome the problems associated with complex sample matrices. The above techniques were used separately or in combination for elemental speciation in food, pharmaceutical and environmental samples. These included the distribution of selenium and arsenic in various nuts, elemental association to different molecular weight fractions in Brazil Nuts, degradation products of levothyroxine in pharmaceutical tablets and iodophenols in river water samples.
Book Synopsis Trace Metal Analysis and Speciation by : Ira S. Krull
Download or read book Trace Metal Analysis and Speciation written by Ira S. Krull and published by Elsevier Publishing Company. This book was released on 1991-01-01 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hardbound. The aim of this volume is to describe the most recent advances in areas of analytical chemistry that relate to the trace determination of metals and inorganics, as well as their distribution and forms (species) present, sample dependent. Analytical approaches are described that encompass a number of separation methods, such as gas and high performance liquid chromatography, interfaced with selective and sensitive detection methods that become unique for metal species/forms present in various samples. Hyphenated techniques are emphasized, such as interfacing HPLC with plasma induced emission spectroscopy, electrochemistry, post-column reaction chemistry, etc. Each chapter describes the latest instrumental and methodology advances that utilize some form of chromatography together with element-specific detection or mass spectrometry to provide absolute identification of the specific species of a metal present in various samples. The book w
Book Synopsis Trace Element Speciation Analytical Methods and Problems by : Graeme E. Batley
Download or read book Trace Element Speciation Analytical Methods and Problems written by Graeme E. Batley and published by CRC Press. This book was released on 1989-06-30 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses in detail the application of physical separation procedures together with modern instrumental analysis techniques such as HPLC, gas chromatography, and anodic strip-ping voltammetry. Particular emphasis is given to environmental samples where the greatest concern for the effects of speciation on trace element transport, toxicity, and bioavailability have been ex-pressed. Special chapters are also devoted to methods of sam-pling and storage, and to the mathematical modeling of chemical speciation. Although designed for the practical analytical chemist, this publication is essential reading for researchers in or entering the field of chemical speciation.
Book Synopsis Modern Advancements in Elemental Speciation by : Douglas Dennis Richardson
Download or read book Modern Advancements in Elemental Speciation written by Douglas Dennis Richardson and published by . This book was released on 2007 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Elemental speciation is the investigation of the chemical form of metal and non- metal containing species in environmental and biological systems for the determination of species specific essentiality and toxicity. Speciation analysis is performed by combining modern separation techniques with state-of-the-art element specific mass spectrometry. Separation techniques used in this work include: capillary electrophoresis (CE), high performance liquid chromatography (HPLC) and gas chromatography (GC). Inductively coupled plasma mass spectrometry (ICPMS) is the instrument of choice for ultra-trace elemental speciation analyses due to the excellent sensitivity and selectivity specific to this mass spectrometer. Modern innovations in analytical instrumentation specific for elemental speciation have provided researchers with resources for the development of new hyphenated techniques and analytical methods. The specific goal of this dissertation is to describe modern advancements specific to elemental speciation. In the first section a novel interface coupling CE and hydride generation with ICPMS detection for arsenic speciation is described. The novel concentric tube interface design allowed for the separation, hydride generation, and detection of four arsenic species in less than 10 minutes. The majority of this dissertation focuses on method development for the analysis of organophosphorus chemical warfare agent (CWA) degradation products. Recent increases in worldwide terrorist activity as well as the threat of chemical weapon attacks have led to the demand for rapid and reliable analytical techniques for CWA analysis. Methods utilizing both HPLC and GC separation techniques couple with 31P element specific detection with ICPMS for the analysis of organophosphorus chemical warfare agent degradation products are described. These works are the first to utilize 31P detection with ICPMS for the analysis of chemical warfare agent degradation products.
Book Synopsis Principles of Bioinorganic Chemistry by : Stephen J. Lippard
Download or read book Principles of Bioinorganic Chemistry written by Stephen J. Lippard and published by University Science Books. This book was released on 1994 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of unnatural metals - which have been introduced into human biology as diagnostic probes and drugs - is another active area of tremendous medical significance.
Book Synopsis Elemental speciation in samples of biomedical and petrochemical interest by liquid chromatography with ICP - AES detection by : Wilfried A. Waal
Download or read book Elemental speciation in samples of biomedical and petrochemical interest by liquid chromatography with ICP - AES detection written by Wilfried A. Waal and published by . This book was released on 1988 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Assessing the Environmental and Biological Implications of Various Elements Through Elemntal Speciation Using Inductively Coupled Plasma Mass Spectrometry by :
Download or read book Assessing the Environmental and Biological Implications of Various Elements Through Elemntal Speciation Using Inductively Coupled Plasma Mass Spectrometry written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Elements rarely exist as free elements or ions instead they occur as a part of a compound or a species. Toxicological and beneficial effects in the medical and biological field can2t be attributed solely to an element, but to elemental compounds with different biological, physical and chemical properties. Therefore, it is pertinent not to rely on information, which is based solely on total elemental concentration and can be misleading. While there are many separation mechanisms used with inductively coupled plasma mass spectrometry (ICP-MS) for speciation, high performance liquid chromatography (HPLC) was the mode of separation utilized in this work. The coupling of HPLC and ICP-MS is a straightforward technique that allows for the speciation of elements in complex matrices, which may not otherwise be possible. The hybrid of the two techniques provide a robust, sensitive, and selective approach. The bottleneck of speciation analysis often lies at the sample preparation step, the goal being the preservation of species integrity. Improper or incomplete sample preparation can yield misleading results, because of the low tolerance of the ICP-MS for dissolved solids. For this study microwave assisted extraction was one of the techniques used to address this problem. The analyte of choice can be successfully extracted from its matrix with the proper optimization of the microwave parameters, and careful solvent selection. The use of inductively coupled plasma mass spectrometry to study the biological implications of various elements was studied. It was evaluated as a tool for elemental speciation as well as a prescreening tool for the study of larger biomolecules. This was achieved by coupling high performance liquid chromatography (HPLC), and using either the reversed 6 phase (RP), ion-exchange (IE), or size-exclusion mode (SEC) of separation. More specifically these techniques were used to investigate: the presence of selenium in plants, the distribution of several elements in dietary supplements, the residual occurrence of arsenic compounds in poultry samples, and the incorporation of selenium in selenium-enriched soybeans.
Book Synopsis Trace Element Speciation for Environment, Food and Health by : L Ebdon
Download or read book Trace Element Speciation for Environment, Food and Health written by L Ebdon and published by Royal Society of Chemistry. This book was released on 2007-10-31 with total page 419 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ongoing progress of science has shown that it is important for analytical scientists to determine not only the presence of particular elements, but also their species. There are many fields where this is applicable, and where there are a number of topics to be addressed. Developing separation and measurement systems for the many element species has tested the resourcefulness of analytical chemists over recent decades. A product of the EU sponsored Speciation 21 Network, this book presents a detailed review of the state-of-the-art of speciation issues in the occupational health, food and environment sectors, along with the main conclusions arising from discussions held during expert meetings. Topics covered include mercury and organotin compounds in the environment; factors affecting the health of workers; the importance of speciation of trace elements for health, and subsequent metabolism in the body; analytical methodologies; risk assessment; and legislation. Trace Element Speciation for Environment, Food and Health provides an insight into applied research in the speciation field and how it has become so important in all the fields represented. With its comprehensive coverage, it will be of particular interest to researchers in industry and academia, as well as government agencies and legislative bodies.
Book Synopsis Chemical Speciation of Organic and Inorganic components of Environmental and Biological Interest in Natural Fluids by : Francesco Crea
Download or read book Chemical Speciation of Organic and Inorganic components of Environmental and Biological Interest in Natural Fluids written by Francesco Crea and published by MDPI. This book was released on 2020-03-25 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: The International Union of Pure and Applied Chemistry (IUPAC) defines the term “speciation” as the distribution of an element amongst defined chemical species in a system, while the process leading to quantitative estimation of the content of different species is called speciation analysis. The chemical speciation of elements in natural waters and biological fluids is a key topic, essential for discussing the chemical reactivity of constituents in these systems. It is well understood that it is the chemical form of a metal or metalloids that determines its reactivity, lifetime, and fate in the environment. Chemical speciation now involves various sectors of the sciences, from chemistry to biology, biochemistry, and environmental sciences, since—as is well known—the total concentration, alone, of an inorganic or organic component (metal or ligand) in a multicomponent natural system (fresh water, sea water, biological fluids, soil, etc.) is insufficient for a comprehensive understand of its behavior in those contests.
Book Synopsis Speciation Analysis of Arsenic, Chromium and Selenium in Aquatic Media by : International Atomic Energy Agency
Download or read book Speciation Analysis of Arsenic, Chromium and Selenium in Aquatic Media written by International Atomic Energy Agency and published by . This book was released on 2007 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Arsenic speciation analysis -- Chromium speciation analysis -- Selenium speciation analysis.
