Analytical Methods Committee

The following procedure has been recommended by the Analytical Methods Committee of the Society for Analytical Chemistry for the determination of small amounts of arsenic in organic matter.20 Organic matter is destroyed by wet oxidation, and the arsenic, after extraction with diethylammonium diethyldithiocarbamate in chloroform, is converted into the arsenomolybdate complex the latter is reduced by means of hydrazinium sulphate to a molybdenum blue complex and determined spectrophotometrically at 840 nm and referred to a calibration graph in the usual manner. 

Analytical Methods Committee, Determination of Arsenic in Organic Materials, Society for Analytical Chemistry, London, 1960... 

Analytical Methods Committee, Handling false negatives, false positives and reporting limits in analytical proficiency tests. Analyst, 122, 495, 1997. 

AMC (1995) The Analytical Methods Committee Uncertainty of measurement - implications for its use in analytical science. Analyst 120 2303... 

Thompson M, Statistical Subcommittee of the Analytical Method Committee (2004) The amazing Horwitz function. AMC Techn Brief 17... 

Organic materials, Sulfuric acid Analytical Methods Committee, Analyst, 1976, 101, 62-66 Advantages and potential hazards in the use of mixtures of 50% hydrogen peroxide solution and cone, sulfuric acid to destroy various types of organic materials prior to analysis are discussed in detail. The method is appreciably safer than those using perchloric and/or nitric acids, but the use of an adequate proportion of sulfuric acid with a minimum of peroxide is necessary to avoid the risk of explosive decomposition. The method is not suitable for use in pressure-digestion vessels (PTFE lined steel bombs), in which an explosion occurred at 80° C. 

Analytical Method Committee, Uses (proper and improper) of correlation coefficient, Analyst, 1988, 113, 1469-1471. 

Methods in books published by professional organizations, e.g. The Royal Society of Chemistry (Analytical Methods Committee), Association of Official Analytical Chemists, etc. 

The ANOVA test, which is also recommended by the Analytical Methods Committee of The Royal Society of Chemistry (UK), can be generalized to other regression models, and it can be extended to handle heteroscedasticity. For a more detailed prescription and the extension of the test see further reading. 

AMC (2000) How to combine proficiency test results with your own uncertainty estimate - the zeta score. AMC Technical Brief No. 2 (Nov 2000). Analytical Methods Committee, Royal Society of Chemistry, London, 2 pp. 

Top-down approach Based on data obtained from interlaboratory studies (precision) MU can be assessed for different concentrations Some sources of uncertainly may be overlooked only if data on collaborative studies are available Analytical Methods Committee [37]... 

Analytical Methods Committee (1995), Uncertainty of measurement Implications of its use in analytical science, Analyst, 120, 2303-2308. 

Analytical Methods Committee (1987), Recommendations for the definition, estimation and use of the detection limit, Analyst, 112,199-204. 

In 1935, the Committee was renamed the Analytical Methods Committee (AMC) but the main analytical work was carried out by sub-committees composed of analysts with specialised knowledge of the particular application area. The earliest topics selected for study were milk products, essential oils, soap and the determination of metals in food colourants. Later applications included the determination of fluorine, crude fibre, total solids in tomato products, trade effluents and trace elements, and vitamins in animal feeding stuffs. These later topics led to the publication of standard methods in a separate booklet. All standard and recommended methods were collated and published in a volume entitled Bibliography of Standard, Tentative and Recommended or Recognised Methods of Analysis in 1951. This bibliography was expanded to include full details of the method under the title Official, Standardised and Recommended Methods of Analysis in 1976 with a second edition in 1983 and a third edition in 1994. 

The Instrumental Criteria Sub-committee of the Analytical Methods Committee has been active for many years in producing Guidelines for the Evaluation of Analytical Instrumentation. Since 1984, they have produced reports on atomic absorption, ICP, X-ray spectrometers, GLC, HPLC, ICP-MS, molecular fluorescence, UV-Vis-NIR, IR and CE. These are excellent source documents to facilitate the equipment qualification process. A current listing of these publications is given in Section 10.2. 

The Analytical Methods Committee s own compilation of official and standardised methods of analysis is widely used and respected within the analytical community. The importance of standardised formats for method documentation has been emphasised by the AMC s guidelines for achieving quality in trace analysis. They list 17 headings for inclusion in the documentation ... 

An Excel spreadsheet. Handbook tables.xls, containing all of the calculation examples in this handbook, is to be made available for download, for teaching and information purposes only, from the Analytical Methods Committee home page. This can be accesed via the Books home page on the Royal Society of Chemistry web site http //www.rsc.org/is/books/vamp.htm. 

In a further method, sample digests are prepared according to method 1(c) of the Analytical Methods Committee [ 100] using precautions described subsequently [101]. The resulting 100 ml of digest, which is in normally 5% v/v sulfuric acid, should not be colourless and should contain any suspended solids. At the same time, prepare two reagent blanks from the volume of acid used in sample oxidation. 

AMC (2001a). What should be done with results below the detection limit Mentioning the unmentionable. In AMC (Analytical Methods Committee) Technical Brief No 5. Royal Society of Chemistry, United Kingdom. 

Analytical methods committee, Robust statistics - how not to reject outliers. Part 1. Basic concepts, Analyst, 114 (1989), 1693-1697. 

Selected references The above digestion procedures (a) and (b) and determination procedure (a) are from work of the AO AC [7n, 13] digestion procedure (c) and determination procedure (b) result from studies of a combined subcommittee of the Analytical Methods Committee of the UK Chemical Society, AO AC and the UK Ministry of Agriculture, Fisheries and Food [19]. Other pertinent references are 8d, 14, 50, 51, 58, 63c, 139, 154, 159, 273-278. 

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