Transcription of 12 LABORATORY SAMPLE PREPARATION
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12 LABORATORY SAMPLE PREPARATION
Sampling SAMPLE PREPARATION Concentration, Separation, Isolation, etc. Steps Measurement (After Scwedt, 1997) FIGURE Degree of error in LABORATORY SAMPLE PREPARATION relative to other activities 12 LABORATORY SAMPLE PREPARATION Introduction On first impression, SAMPLE PREPARATION may seem the most routine aspect of an analytical protocol. However, it is critical that analysts realize and remember that a measurement is only as good as the SAMPLE PREPARATION that has preceded it. If an aliquant taken for analysis does not represent the original SAMPLE accurately, the results of this analysis are questionable.
vessel can be used to collect volatile materials. At a minimum, all ash or finely ground samples should be covered before they are moved. Solid samples are often ground to a fine particle size before they are fused or wet ashed to increase the surface area and speed up the reaction between the sample and the fluxing agent or . MARLAP . 12-2 ...
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