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Determining Trace Element Concentrations In Marine Larvae Using Electrothermal Vaporization And Laser Ablation Technology
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Book Synopsis Determining Trace Element Concentrations in Marine Larvae Using Electrothermal Vaporization and Laser Ablation Technology by : Lisa Levin
Download or read book Determining Trace Element Concentrations in Marine Larvae Using Electrothermal Vaporization and Laser Ablation Technology written by Lisa Levin and published by . This book was released on 1998 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this DURIP award was the acquisition of an instrument to enhance analytical capabilities in support of grant no. N00014-96-1-0025 (Bay Ocean Exchange Processes: Development and Application of a Meroplankton Tracer Technique). This research is concerned with (1) determining the uptake and retention of trace metals by invertebrate larvae and (2) elemental fingerprinting of naturally occurring larvae as a means to determine site of origin. The objective was to quantify composition of multiple trace elements for small samples (i.e., individual larvae). With DURIP funds an Inductively Coupled Plasma-Optical Emission Spectrometer (ICP-OES, model Optima 3OOODV) was purchased for the Scripps Institution of Oceanography analytical facilities. The ICP-OES has been used to characterize the elemental composition of newly hatched crab larvae sampled from San Diego Bay, neighboring embayments and coastal habitats. Results have shown that elements (e.g., copper, aluminum, zinc, strontium) can be quantified for individual larvae and are useful in distinguishing larvae originating from inner vs outer San Diego Bay and coastal habitats. Other applications of the Scripps ICP-OES since its purchase include trace element characterization of (a) contaminated sediments to develop remediation methods (B. Tibo), (b) meteorites to model age of the early solar system (G. Lugmair and C. MacIsaac), and (c) igneous rocks to track earth history (P. Castillo).
Book Synopsis Potential Use of Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) Techniques for Determining Larval Dispersal of Austrovenus Stutchburyi in Whangarei Harbour by : Craig Roger Norrie
Download or read book Potential Use of Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) Techniques for Determining Larval Dispersal of Austrovenus Stutchburyi in Whangarei Harbour written by Craig Roger Norrie and published by . This book was released on 2015 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Population connectivity is a fundamental component of population dynamics in marine systems, understanding of which can improve ecological understanding and management. Direct observation of larval dispersal at appropriate spatial and temporal scales is difficult. The use of LA-ICP-MS based elemental fingerprinting overcomes many problems with directly observing dispersal and is therefore a powerful tool for tracking population connectivity. This thesis examined the potential for LA-ICP-MS to estimate population connectivity of Austrovenus stutchburyi in Whangarei Harbour and its surrounds. I determined optimal methods for the preparation of shell material for analysis by LA-ICPMS to achieve high sample throughput and accurate analyses. Comparison of different cleaning and mounting options suggested that optimal preparation should include cleaning the shell with deionised water and mounting shells on a microscope slide whole for ablation. I used laboratory culturing experiments to investigate the effect of increased [Sr], [Mg], and [Ba] on trace element uptake from surrounding water by A. stutchburyi. Of the elements measured, only increased [Sr] resulted in increased strontium content of shell material. Results suggested that the elemental composition of A. stutchburyi shell likely reflects a number of environmental and biological conditions. Separate experiments examined the effect of different sediment chemical signatures, and showed no significant influence of sediment on elemental composition. No relationship was found between elemental composition of sediment and shell in the field. I utilised LA-ICP-MS elemental fingerprinting of A. stutchburyi in Whangarei Harbour to investigate spatial differences in the settled shell of individuals collected from 14 sites within the harbour. Strong spatial differences were found to exist (44-100% discriminant function analysis classification success). Higher classification success occurred when sites were grouped regionally (88% classification success). Variation in elemental fingerprints over time was investigated at one site for 3 sampling events over 6 months. Temporal changes negatively affected results (45-99% classification success). Elemental signatures on the prodissoconch within settled shells showed high variation, indicating multiple larval sources. This thesis concluded that LA-ICP-MS based elemental fingerprinting is a potentially valuable technique for determining larval origins of A. stutchburyi in Whangarei Harbour and neighbouring estuaries, and informing population connectivity of this species.
Book Synopsis Accuracy in Determining Trace Element Concentrations in Marine Sediments by :
Download or read book Accuracy in Determining Trace Element Concentrations in Marine Sediments written by and published by . This book was released on 1974 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Accuracy in Determining Trace Element Concentrations in Marine Sediments by :
Download or read book Accuracy in Determining Trace Element Concentrations in Marine Sediments written by and published by . This book was released on 1974 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Accuracy in Determining Trace Element Concentration in Marine Sediments by : E. D. Wood
Download or read book Accuracy in Determining Trace Element Concentration in Marine Sediments written by E. D. Wood and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Trace Metal Concentrations in Marine Organisms by : Ronald Eisler
Download or read book Trace Metal Concentrations in Marine Organisms written by Ronald Eisler and published by Pergamon. This book was released on 1981 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lowman.
Book Synopsis Review of Trace Element Concentrations in Marine Organisms by : Edward D. Goldberg
Download or read book Review of Trace Element Concentrations in Marine Organisms written by Edward D. Goldberg and published by . This book was released on 1966 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Determination of Trace Elements Levels in Plasma from Larvae in the Course of Baculoviral and Bacterial Infections by Inductively Coupled Plasma-mass Spectrometry (ICP-MS) by : Rui Sun
Download or read book Determination of Trace Elements Levels in Plasma from Larvae in the Course of Baculoviral and Bacterial Infections by Inductively Coupled Plasma-mass Spectrometry (ICP-MS) written by Rui Sun and published by . This book was released on 2009 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: While a number of studies have examined the effect of infections on the trace elements status of mammals, not any similar study in insects are found. In this study, we used inductively coupled plasma-mass spectrometry (ICP-MS) to quantify trace elements of Mg, Mn, Fe, Cu, Zn and Mo levels in the plasma from the tobacco budworm, Heliothis virescens, following infection of the insect with a baculovirus (Helicoverpazea single nucleopolyhedrovirus (HzSNPV)) and bacteria (Micrococcus lysodeikticus) at different times post infection. There are no changes in any metal due to bacterial infection and no differences between any 12 hours post infection mocks versus 12 hours post infection bacterial infected samples. For the larvae with a virus (HzSNPV) treatment, in both fourth and fifth instars, all the trace elements of interest (Mg, Mn, Fe, Cu, Zn, Mo) change over the course of the 72 hours of infection in both instars, which is due to the development of larvae. Iron level in insect plasma with the HzSNPV infection was elevated in the late 4th instar (60 hours post infection) when compared to iron level in the same aged controls. This could be explained by the ability of iron storage protein ferritin to buffer iron, or free iron of damaged tissues leaking intracellular iron into the plasma. Copper level in insect plasma with the HzSNPV infection was lower in the late 4th instar (60 hours post infection) when compared to copper level in the same aged controls, which is probably due to the decline of copper-binding protein prophenoloxidases (PPOs) levels during the course of infection.
Book Synopsis Determination of Trace Element Concentrations in Vegetation by Laser Induced Breakdown Spectroscopy (LIBS) by : John W. Branch
Download or read book Determination of Trace Element Concentrations in Vegetation by Laser Induced Breakdown Spectroscopy (LIBS) written by John W. Branch and published by . This book was released on 2003 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mars written by Viorel Badescu and published by Springer Science & Business Media. This book was released on 2009-12-07 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt: th th Mars, the Red Planet, fourth planet from the Sun, forever linked with 19 and 20 Century fantasy of a bellicose, intelligent Martian civilization. The romance and excitement of that fiction remains today, even as technologically sophisticated - botic orbiters, landers, and rovers seek to unveil Mars’ secrets; but so far, they have yet to find evidence of life. The aura of excitement, though, is justified for another reason: Mars is a very special place. It is the only planetary surface in the Solar System where humans, once free from the bounds of Earth, might hope to establish habitable, self-sufficient colonies. Endowed with an insatiable drive, focused motivation, and a keen sense of - ploration and adventure, humans will undergo the extremes of physical hardship and danger to push the envelope, to do what has not yet been done. Because of their very nature, there is little doubt that humans will in fact conquer Mars. But even earth-bound extremes, such those experienced by the early polar explorers, may seem like a walk in the park compared to future experiences on Mars.
Book Synopsis Analytical Atomic Spectrometry with Flames and Plasmas by : José A. C. Broekaert
Download or read book Analytical Atomic Spectrometry with Flames and Plasmas written by José A. C. Broekaert and published by John Wiley & Sons. This book was released on 2006-05-12 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: This completely revised second edition of the standard work has been expanded by some twenty percent to include more information on the latest developments and new apparatus. In particular, sections have been added on microplasmas and new types of spectrometers, while that on the rapidly expanding field of speciations with practical examples from life and environmental sciences have been included. Still in one handy volume, the book covers all the important modern aspects of atomic fluorescence, emission and absorption spectroscopy as well as plasma mass spectroscopy in a readily comprehensible and practice-oriented manner. A thorough explanation of the physical, theoretical and technical basics, example applications including the concrete execution of analysis and comprehensive cross-references to the latest literature allow even newcomers easy access to the methodologies described.
Book Synopsis Airmobile Operations by : United States. Department of the Army
Download or read book Airmobile Operations written by United States. Department of the Army and published by . This book was released on 1967 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advances in Food Traceability Techniques and Technologies by : Montserrat Espiñeira
Download or read book Advances in Food Traceability Techniques and Technologies written by Montserrat Espiñeira and published by Woodhead Publishing. This book was released on 2016-06-18 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Food Traceability Techniques and Technologies: Improving Quality Throughout the Food Chain covers in detail a topic of great importance to both the food industry which is obliged to provide clear and accurate labeling of their products and the government and other organizations which are tasked with verification of claims of food quality and safety. The traceability of food products is becoming ever more important as globalization continues to increase the complexity of food chains. Coverage in the book includes the wide range of technologies and techniques which have been utilized in the tracing of food products. In addition, the ways in which the misuse of food traceability will affect the quality of food is also covered throughout. The first part of the book introduces the concept of traceability in the food industry, highlighting advantages of a robust traceability and the difficulties involved in implementing them. The second part looks at the technologies used to trace products, and the third section reviews the legal requirements for food traceability in the EU, the US, and the rest of the world. The final section contains a number of case studies which evaluate how food traceability has been successfully implemented in various foods focusing on the quality of the food. Provides a wide ranging overview of all recent advances in food traceability techniques and technologies Presents case studies covering when food traceability techniques have been applied to a range of food stuffs Covers the legal aspects of food traceability in the EU, the USA, and around the world
Book Synopsis Advanced Nanostructured Materials for Environmental Remediation by : Mu. Naushad
Download or read book Advanced Nanostructured Materials for Environmental Remediation written by Mu. Naushad and published by Springer. This book was released on 2019-03-14 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a wide-range exploration on the ongoing research and developmental events in environmental nanotechnology. Emerging nanomaterials and its technology have been known to offer unique advantages and are continually showing promising potential attracting continuous global attention. This work thus discusses experimental studies of various nanomaterials along with their design and applications and with specific attention to chemical reactions and their challenges for catalytic systems. It will make a noteworthy appeal to scientists and researchers working in the field of nanotechnology for environmental sciences.
Book Synopsis Modern Techniques for Food Authentication by : Da-Wen Sun
Download or read book Modern Techniques for Food Authentication written by Da-Wen Sun and published by Academic Press. This book was released on 2018-07-25 with total page 808 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern Techniques for Food Authentication, Second Edition presents a comprehensive review of the novel techniques available to authenticate food products, including various spectroscopic technologies, methods based on isotopic analysis and chromatography, and other techniques based on DNA, enzymatic analysis and electrophoresis. This new edition pinpoints research and development trends for those working in research, development and operations in the food industry, giving them readily accessible information on modern food authentication techniques to ensure a safe and authentic food supply. It will also serve as an essential reference source to undergraduate and postgraduate students, and for researchers in universities and research institutions. Presents emerging imaging techniques that have proven to be powerful, non-destructive tools for food authentication Includes applications of hyperspectral imaging to reflect the current trend of developments in food imaging technology for each topic area Provides pixel level visualization techniques needed for fast and effective food sample testing Contains two new chapters on Imaging Spectroscopic Techniques
Book Synopsis Deep Eutectic Solvents by : Yizhak Marcus
Download or read book Deep Eutectic Solvents written by Yizhak Marcus and published by Springer. This book was released on 2018-12-05 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is one of the first books fully dedicated to the rapidly advancing and expanding research area of deep eutectic solvents. Written by the internationally recognized expert in solution chemistry, it supplies full information regarding preparation of these new eco-friendly solvents, their properties and applications. The current and potential applications of deep eutectic solvents as organic reaction media, catalytic system, in biomass processing, nanotechnology and metal finishing industry, as well as for extraction and separation are extensively discussed.This highly informative and carefully presented book will appeal to practicing chemists (organic chemists, polymer chemists, biochemists) as well as chemical engineers and environmental scientists.
Download or read book Nanotoxicology written by Nelson Durán and published by Springer Science & Business Media. This book was released on 2013-10-25 with total page 415 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book takes a systematic approach to nanotoxicology and the developing risk factors associated with nanosized particles during manufacture and use of nanotechnology. Beginning with a detailed introduction to engineered nanostructures, the first part of the book presents concepts and definitions of nanomaterials from quantum dots to graphene to fullerenes, with detailed discussion of functionalization, stability, and medical and biological applications. The second part critically examines methodologies used to assess cytotoxicity and genotoxicity. Coverage includes interactions with blood (erythrocytes), combinatorial and microarray techniques, cellular mechanisms, and ecotoxicology assessments. Part three describes cases studies both in vitro and in vivo for specific nanomaterials including solid lipid nanoparticles and nanostructured lipid carriers and metallic nanoparticles and metallic oxides. New information is also presented on toxicological aspects of poloxamers and polymeric nanoparticles as drug carriers as well as size effects on cytotoxicity and genotoxicity. Didactic aspects are emphasized in all chapters, making the book suitable for a broad audience ranging from advanced undergraduate and graduate students to researchers in academia and industry. In all, Nanotoxicology: Materials, Methodologies, and Assessments will provide comprehensive insight into biological and environmental interactions with nanostructures. Provides an introduction to nanostructures actually in use Describes cyto- and genotoxicity methodologies, and assesses their performance in comparison to common toxicity assays Discusses the relation of cytotoxicity and genotoxicity to ecotoxicity Presents a range of applications, from biogenic silver nanoparticles to poloxamers as drug-delivery systems, reflecting the expanding applications of nanotechnology
