Rsc publishing jan 2003 (8 Ergebnisse)

Taschenbuch. Zustand: Neu. Neuware - Whether pH is being used to test a sample against a legal requirement or specification; as part of an analytical method; for monitoring and controlling a reaction; as a process control in the chemical industry; or for the environmental monitoring of waste and effluents, it is important that all pH measurements are carried out in a logical and consistent manner, paying careful attention to experimental procedures, in order to obtain reliable results. This guide provides scientists with the knowledge of how to do just that, first by outlining the principles of pH measurement and buffer solutions. pH meters and electrodes are then discussed, including selection criteria and the care of electrodes. Finally, sections on making pH measurements and uncertainty are followed by a set of practical exercises. Measurement of pH is one of the Practical Laboratory Skills Training Guides, a series that aims to make achieving best practice easy. These invaluable manuals will enable both experienced and inexperienced staff to get the essential basics of any experiment right simply by following the clear and easy to use instructions provided. The guides are written by experienced scientists and include minimal theory, plenty of practical exercises in order to assess competence, and trouble shooting information. Other titles are: Measurement of Mass; Measurement of Volume; High Performance Liquid Chromatography; and Gas Chromatography.…

Taschenbuch. Zustand: Neu. Neuware - This guide explains the best methods for undertaking the measurement of mass, one of the most frequent operations in the analytical laboratory. It is a technique required when obtaining a known quantity of a sample for analysis; for preparation of analytical reagents; and for preparation of calibration standards etc. After an initial discussion of the units of mass and other terminology, the guide goes on to look at the types of balance and their features, followed by coverage of location, calibration, accuracy and use of the balance. Practical exercises are then provided. Measurement of Mass is one of the Practical Laboratory Skills Training Guides, a series that aims to make achieving best practice easy. These invaluable manuals will enable both experienced and inexperienced staff to get the essential basics of any experiment right simply by following the clear and easy to use instructions provided. The guides are written by experienced scientists and include minimal theory, plenty of practical exercises in order to assess competence, and trouble shooting information. The other titles are: Measurement of Volume; Measurement of pH; High Performance Liquid Chromatography; and Gas Chromatography.…

Taschenbuch. Zustand: Neu. Neuware - For those new to this technique, this guide provides basic tips, key skills, awareness and guidance on good practice of High Performance Liquid Chromatography (HPLC). It will help build understanding of the important issues to consider during analysis and how to develop further skills. HPLC is one of the most widely used techniques in industry to separate and analyse compounds through the mass transfer of analytes between stationary and mobile phases. This guide will prove an invaluable introduction to the technique. Starting with a look at the basic theory, the guide goes on to describe HPLC components, system parameters, suitability checks and testing. Later sections cover calibration, problem solving and data handling. High Performance Liquid Chromatography is one of the Practical Laboratory Skills Training Guides, a series that aims to make achieving best practice easy. These invaluable manuals will enable both experienced and inexperienced staff to get the essential basics of any experiment right simply by following the clear and easy to use instructions provided. The guides are written by experienced scientists and include minimal theory, plenty of practical exercises in order to assess competence, and trouble shooting information.…

Taschenbuch. Zustand: Neu. Neuware - Gas chromatography has been the most widely used technique in analytical chemistry for over three decades. It offers unchallenged resolving power for closely related volatile compounds and high sensitivity and selectivity with many of the detector systems. This technique is very accurate and precise when used in the laboratory. This guide begins by looking at the basic theory behind gas chromatography, then goes on to examine injection and sampling methods and the chromatographic column. Sections on detection, data handling, calibration and standards are followed by problem-solving and practical exercises. Gas Chromatography is one of the Practical Laboratory Skills Training Guides, a series that aims to make achieving best practice easy. These invaluable manuals will enable both experienced and inexperienced staff to get the essential basics of any experiment right simply by following the clear and easy to use instructions provided. The guides are written by experienced scientists and include minimal theory, plenty of practical exercises in order to assess competence, and trouble shooting information. Other titles are: Measurement of Mass; Measurement of Volume; Measurement of pH; and High Performance Liquid Chromatography.…

Taschenbuch. Zustand: Neu. Neuware - In recent years, the use of illegal substances has increased, particularly 'designer' drugs which have rapidly become part of youth culture. The need for all involved in drug control to have up to date information about the subject has never been greater. This book helps meet this need by providing a chemical background to the legal controls on drugs of abuse. Although focussed on the UK, some of the provisions of the Misuse of Drugs Act derive from international treaties; the discussion of technical aspects is therefore of wider relevance. Apart from the Act itself, the book also deals with certain aspects of the Misuse of Drugs Regulations. There is detailed coverage of 'designer drugs' and the generic legislation that was introduced to tackle them. The more recent addition of 35 'Ecstasy'-like substances is covered in depth. The significance to the legislation of terms such as salt, base, stereoisomer, ester, ether, derivative, homologue and isotope are described, and the text is supplemented by 23 Tables and over 80 chemical structures. There are eleven Appendices covering topics such as precursor chemicals, related legislation, stated cases, sentencing guidelines and the chemical characteristics of commonly-abused drugs. Up-to-date lists of controlled drugs, with cross references to their status in UN treaties, are provided and a number of pending and other possible changes to the Act are included together with a guide to nomenclature and synonyms. Although primarily aimed at forensic scientists, this book will be of great benefit to all bodies concerned with drug control, including the police, customs officers, lawyers and government departments.…

Buch. Zustand: Neu. Neuware - Glow discharge optical emission spectroscopy (GDOES) is an essential technique for the direct analysis of bulk solids, for elemental surface analysis and for the depth profiling of thin films and industrial coatings. The technique has shown rapid growth in numbers of instruments, in breadth of applications, in improved quantification in recent years and is now a recognised technique within the ISO, with two international standards. Glow Discharge Optical Emission Spectroscopy: A Practical Guide takes the reader on a journey through instrument operation, sample preparation, analysis, and reporting results. It follows two sets of samples through the whole process of analysis, brass samples for bulk analysis, and zinc-coated steel for depth profiling. Procedures are consistent with recent ISO standards and each step is loaded with hands-on tips and theoretical insight. The book also includes unique data tables on spectral interferences, molecular bands, self-absorption and relative sputtering rates. This book is designed for those using or managing GDOES instruments and for students interested in learning the technique from a hands-on perspective. It is also an invaluable aid to those considering the purchase of a GDOES instrument, or those using GDOES results, to understand in detail how the technique works and what is involved in maintaining the instrument and achieving high quality results.…

Buch. Zustand: Neu. Neuware - 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.…

Buch. Zustand: Neu. Neuware - This book offers extensive coverage of the most important aspects of UVR effects on all aquatic (not just freshwater and marine) ecosystems, encompassing UV physics, chemistry, biology and ecology. Comprehensive and up-to-date, UV Effects in Aquatic Organisms and Ecosystems aims to bridge the gap between environmental studies of UVR effects and the broader, traditional fields of ecology, oceanography and limnology. Adopting a synthetic approach, the different sections cover: the physical factors controlling UVR intensity in the atmosphere; the penetration and distribution of solar radiation in natural waters; the main photochemical process affecting natural and anthropogenic substances; and direct and indirect effects on organisms (from viruses, bacteria and algae to invertebrate and vertebrate consumers). Researchers and professionals in environmental chemistry, photochemistry, photobiology and cell and molecular biology will value this book, as will those looking at ozone depletion and global change.…