Analytical Measurement Terminology: Handbook of Terms Used by E. Prichard PDF

By E. Prichard

ISBN-10: 0854044434

ISBN-13: 9780854044436

Chemists in academia and clarify terminology known in analytical chemistry, offering additional information than the easy definition yet now not explaining the best way to make measurements. They contain definitions which are not present to aid readers of older records. Examples are supplied as a rule. The cross-referencing is plentiful. disbursed within the US through Springer Verlag.

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Additional resources for Analytical Measurement Terminology: Handbook of Terms Used in Quality Assurance of Analytical Measurement

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A vital requirement of any quality system is that all aspects must be audited, at least annually, by a person independent of the activity. A quality audit is an inspection made on a selected area of the laboratory, or of the quality system, in order to obtain objective evidence of the extent to which the planned arrangements for achieving and maintaining quality are met, and indeed whether or not they are adequate. Audits must ensure that day-to-day operations comply with the requirements of the system.

The precision of an analytical method is evaluated by making repeat independent measurements on identical samples to determine the spread of results. Precision can be defined in mathematical terms as the random component of the measurement error of the method, so it does not relate to the true value. A useful statistical measure for precision is standard deviation or coefficient of variation (relative standard deviation). e. 2). It is important to convey clearly what precision relates to in terms of the analysis.

An analytical standard is the general term used to describe a solution or matrix containing a known amount of analyte, which will be used to check the performance of a method/instrument. A calibration standard is a pure compound of accurately known concentration used to calibrate an instrument. 4 Calibration standard An analyst needs to calibrate an atomic absorption spectrophotometer used for the determination of lead in milk samples. The analyst can purchase a certified reference material (CRM) solution of lead in nitric acid.

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Analytical Measurement Terminology: Handbook of Terms Used in Quality Assurance of Analytical Measurement by E. Prichard

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