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Analytical chemists must use a range of statistical tools in their
treatment of experimental data to obtain reliable results.
Practical Statistics for the Analytical Scientist is a manual
designed to help them negotiate the daunting specialist terminology
and symbols. Prepared in conjunction with the Department of Trade
and Industry's Valid Analytical Measurement (VAM) programme, this
volume covers the basic statistics needed in the laboratory. It
describes the statistical procedures that are most likely to be
required including summary and descriptive statistics, calibration,
outlier testing, analysis of variance and basic quality control
procedures. To improve understanding, many examples provide the
user with material for consolidation and practice. The fully worked
answers are given both to check the correct application of the
procedures and to provide a template for future problems. Practical
Statistics for the Analytical Scientist will be welcomed by
practising analytical chemists as an important reference for day to
day statistics in analytical chemistry.
The isotope dilution mass spectrometry (IDMS) technique is well
known and widely reported in the literature. However, its
application can present considerable difficulties with regard to
obtaining reliable results. Produced jointly by the Royal Society
of Chemistry's Analytical Methods Committee and the Valid
Analytical Measurement (VAM) programme, the aim of this book is to
provide a simplified yet robust methodology, together with adequate
guidance, to enable laboratories wishing to use the technique to
obtain reliable data. The methodologies, for inorganic and organic
mass spectrometry, which use exact and approximate matching, are
illustrated with worked examples and clear diagrammatic
representations. A comprehensive glossary of terms, references to
key publications and an extensive IDMS bibliography are also
provided. Clear and comprehensive in coverage, Guidelines for
Achieving High Accuracy in Isotope Dilution Mass Spectrometry
(IDMS) will provide valuable assistance to a wide variety of
analytical chemists interested in applying the IDMS technique to
their own measurement applications.
Reference materials play an important role in analytical chemistry,
where they are used by analysts for a variety of purposes,
including: checking and calibrating instruments; validating methods
and estimating the uncertainty of analytical measurements; checking
laboratory and analyst performance; and internal quality control.
This book provides guidance and information for the users of
certified reference materials (CRMs), explaining how they can best
be used to achieve valid analytical measurements and improve
quality in the analytical laboratory. General information on CRMs
and how they are produced sets the scene for readers. The
statistics relating to CRM use are then explained in an
easy-to-understand manner, and this is followed by sections
covering the main uses of CRMs. Detailed worked examples are used
throughout. Structured and comprehensive in coverage, this book
will be welcomed by all users of certified reference materials.
The variety of complex terms used in the Quality Assurance aspect
of analytical measurement can be the cause of considerable
confusion. This unique handbook explains the most widely-used
terminology in language that is readily understood, and attempts to
place each term in context. Concepts are described in a way that is
useful to all practitioners, particularly those concerned with
quality assurance, validation and reliability of analytical
measurements. Explanations of terms are always in line with the
""official definition,"" often developed by international
committees. Adopting a thematic approach, Analytical Measurement
Terminology is divided into six main parts. The first four parts
address the logical progression of an analytical measurement, from
obtaining a sample, through method and materials, to reporting the
result. The two remaining parts include a variety of terms
encountered in quality systems and documentation, along with
definitions of ""mathematical"" terms likely to be encountered by
the analyst in their everyday work. The index provides easy access
to both the definitions and the accompanying examples. With its
straightforward descriptions and many examples, this handbook,
produced as part of the VAM (Valid Analytical Measurement)
programme, will provide valuable assistance for a wide variety of
new and experienced practitioners, as well as for teachers and
lecturers.
In spite of the wide variety and complexity of biological
materials, nucleic acids are ubiquitous. DNA is becoming the
bioanalyte of choice due to the vast amount of information embedded
in its sequence, its robust chemical nature and the range of highly
sensitive analytical techniques that have been developed. The
results of such analyses can have an important impact on our
society both commercially and in terms of the quality of life.
Absolute confidence in the data generated is therefore of the
utmost importance. This book, produced by LGC as part of the VAM
(Valid Analytical Measurement) Programme, introduces the issues of
validation and quality to the bioanalytical community, specifically
addressing DNA-based analyses. It aims to raise awareness of the
factors that can influence the validity of DNA analysis and the
production of quality data. Emphasis is placed on VAM principles,
as well as additional challenges that are associated with the
analysis of real samples, for example, complex food matrices or
forensic samples that have been subjected to environmental insult.
Information is collated from a variety of sources including
literature, discussions and LGC research, and offers constructive
advice where possible.
This book deals exclusively and comprehensively with the role of
proficiency testing in the quality assurance of analytical data. It
covers in detail proficiency testing schemes from the perspectives
of scheme organisers, participant laboratories and the ultimate
end-users of analytical data. A wide variety of topics are
addressed including the organisation, effectiveness, applicability,
and the costs and benefits of proficiency testing. Procedures for
the evaluation and interpretation of laboratory proficiency, and
the relation of proficiency testing to other quality assurance
measures are also discussed. Proficiency Testing in Analytical
Chemistry is an important addition to the literature on proficiency
testing and is essential reading for practising analytical chemists
and all organisations and individuals with an interest in the
quality of analytical data.
Trace Analysis is a highly practical book which deals with the
science rather than the paperwork of quality assurance systems.
Produced as part of the UK Valid Analytical Measurement (VAM)
initiative, it provides the analyst with a systematic approach
across the broad spectrum of trace analysis, offering practical
advice and guidance on methodology and techniques. The book is
structured to take the analyst step-by-step through the stages of
any trace analysis. The approach is general, being broken down only
into types of analyte. Additional chapters explain the application
of groups of techniques to each analyte type. Each section contains
references to published material which will allow the analyst to
obtain further information on specific topics. Throughout the book,
the analyst is reminded of pitfalls which lead to unreliable
results. This new book therefore offers invaluable advice to
analysts in all areas and at all levels, providing practical
'expert' advice on methodology. It will prove indispensable as a
single, comprehensive bench guide for analysts in university,
college and industrial laboratories.
Sampling is the first and arguably most important step in the
analytical process. Obtaining representative and reliable samples
of any bulk material being analysed is of the utmost importance.
This book brings together the broader principles of sampling
applicable to a wide variety of situations. Prepared under the
Department of Trade and Industry's Valid Analytical Measurement
(VAM) Initiative, it covers solid, liquid and gas samples, with
examples of some of the equipment used. General Principles of Good
Sampling Practice is based on an intensive literature survey
covering a wide range of materials, offers guidance on particle
size reduction of solids, and looks at requirements for suitable
containers and storage prior to analysis. The book gives particular
emphasis to the preparation of sampling plans. Checklists ensure
that coverage is comprehensive. In addition, various safety aspects
are considered, appendices give definitions of sampling
terminology, and some theory is addressed. General Principles of
Good Sampling Practice has come as a welcome reference guide for
researchers and professionals who need to access the important
information on how to sample. Before, information has been
scattered across the literature. Now, anyone with interests or
responsibilities in sampling has at hand the aid of this thorough
and reliable guide.
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