| 词条 | Sample preparation (analytical chemistry) |
| 释义 |
In analytical chemistry, sample preparation refers to the ways in which a sample is treated prior to its analyses. Preparation is a very important step in most analytical techniques, because the techniques are often not responsive to the analyte in its in-situ form, or the results are distorted by interfering species. Sample preparation may involve dissolution, extraction, reaction with some chemical species, pulverizing, treatment with a chelating agent (e.g. EDTA), masking, filtering, dilution, sub-sampling or many other techniques. Treatment is done to prepare the sample into a form ready for analysis by specified analytical equipment. Sample preparation could involve: crushing and dissolution, chemical digestion with acid or alkali, sample extraction, sample clean up and sample pre-concentration. References
| title = Sample Preparation | url = http://www.panalytical.com/index.cfm?pid=206 | accessdate = 2007-11-09 }}{{DEFAULTSORT:Sample Preparation (Analytical Chemistry)}}{{chem-stub}} 1 : Analytical chemistry |
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