| Автор | Farrington, Derek |
| Автор | Jervis, Andrew |
| Автор | Shelley, Stephen |
| Автор | Damant, Andrew |
| Автор | Wood, Roger |
| Автор | Thompson, Michael |
| Дата выпуска | 2004 |
| dc.description | A recently proposed method of looking at sampling uncertainty has been tested by its application to the sampling and analysis of several types of food and an animal feedstuff. In this â SADâ method, increments comprising the conventional sample (that is, collected in the fashion prescribed by the standard sampling protocol) are allocated to either of two equal sized â splitsâ , which are prepared and analysed separately. The absolute difference between the analytical results for the two splits (the split absolute difference, or SAD) is plotted on a one-sided control chart. A non-compliance indicates that the combined uncertainty of sampling or analysis is larger than expected and the result of the measurement (the mean of the two split results) is possibly not fit for purpose. In addition, the SAD results give rise to a rugged estimate the uncertainty associated with the sampling protocol, often a major part of the total measurement uncertainty. |
| Формат | application.pdf |
| Издатель | Royal Society of Chemistry |
| Название | A pilot study of routine quality control of sampling by the SAD method, applied to packaged and bulk foodsElectronic supplementary information (ESI) available: 25 SAD charts. See http://www.rsc.org/suppdata/an/b3/b315644n/ |
| Тип | research-article |
| DOI | 10.1039/b315644n |
| Electronic ISSN | 1364-5528 |
| Print ISSN | 0003-2654 |
| Журнал | Analyst |
| Том | 129 |
| Первая страница | 359 |
| Последняя страница | 363 |
| Аффилиация | Farrington Derek; Direct Laboratories, Woodthorne |
| Аффилиация | Jervis Andrew; Direct Laboratories, Woodthorne |
| Аффилиация | Shelley Stephen; Direct Laboratories, Woodthorne |
| Аффилиация | Damant Andrew; Food Standards Agency |
| Аффилиация | Wood Roger; Food Standards Agency, c/o Institute of Food Research |
| Аффилиация | Thompson Michael; School of Biological and Chemical Sciences, Birkbeck College (University of London) |
| Выпуск | 4 |
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