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AMC Technical Briefs


The new AMC Technical Briefs, will bring to every member of the Analytical Division up to date news of current technical issues. 

These documents may be freely reproduced and distributed in exactly the same form as published here, in print or electronic media, without formal permission from the Royal Society of Chemistry. Copies must not be offered for sale and the copyright notice must not be removed or obscured in any way. Any other reuse of this document, in whole or in part, requires permission in advance from the Royal Society of Chemistry.

Downloadable Files

The standard deviation of the sum of several variables
No 30 April 2008
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CHNS Elemental Analysers
No 29 April 2008
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Using analytical instruments and systems in a regulated environment
No. 28, September 2007
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Why are we weighting?
No 27, June 2007
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Experimental design and optimisation (2): handling uncontrolled factors
No. 26, December 2006
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How good were analysts in the good old days before instrumentation?
No. 25, October 2006
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Experimental design and optimisation (1): an introduction to some basic concepts
No. 24, June 2006
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Mixture models for describing multimodal data
No. 23, March 2006
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Uncertainties in concentrations estimated from calibration experiments
No. 22, March 2006
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Energy-dispersive X-ray fluorescence spectrometry (EDXRF)
No. 21, September 2005
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Analytical and sampling strategy, fitness for purpose, and computer games
No. 20, August 2005
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Terminology - the key to understanding analytical science. Part 21: Sampling and sample preparation
No. 19, March 2005
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GMO Proficiency testing: Interpreting z-scores derived from log-transformed data
No. 18, December 2004
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The amazing Horwitz function
No. 17, July 2004
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Proficiency testing: assessing z-scores in the longer term
No. 16, April 2004 revised April 2007
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Is my uncertainty estimate realistic?
No. 15, December 2003
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A glimpse into Bayesian statistics
No. 14, October 2003
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Terminology - the key to understanding analytical science: Part 1: Accuracy, precision and uncertainty
No. 13, September 2003
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The J-chart: a simple plot that combines the capabilities of Shewhart and cusum charts, for use in analytical quality control
No. 12, March 2003
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Understanding and acting on scores obtained in proficiency testing schemes
No 11, December 2002
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Fitting a linear functional relationship to data with error on both variables
No 10, March 2002
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A simple fitness-for-purpose control chart based on duplicate results obtained from routine test materials
No 9, February 2002
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The Bootstrap: A Simple Approach to Estimating Standard Errors and Confidence Intervals when Theory Fails
No 8, August 2001
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Nitrogen factors
No 7, May 2001
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Robust statistics: a method of coping with outliers
No 6, April 2001
PDF iconPDF (40k)  

What should be done with results below the detection limit?
No 5, April 2001
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Representing data distributions with kernel density estimates
No 4, Revised March 2006
PDF iconPDF (75k)  

Is my calibration linear?
No 3, Revised December 2005
PDF iconPDF (123k)  

The zL-score--combining your proficiency test results with your own fitness for purpose criterion
No 2, Revised December 2005
PDF iconPDF (49k)  

The estimation and use of recovery factors

No 1, October 2000 has been superseded by AMC Recommendation No. 3



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