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| how closely the result of an experiment agrees with the “true” or expected result |
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| provides chemical or physical information about a sample |
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| component of interest in the sample |
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| process of experimentally determining the value of kA by measuring the signal for one or more standard samples, each containing a known concentration of analyte |
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| When using several standards with different concentrations of analyte, the result is best viewed visually by plotting SA versus the concentration of analyte in the standards. |
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| Spectroscopy and electrochemistry, in which an optical or electrical signal is proportional to the relative amount of analyte in a sample |
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| the smallest amount of analyte that we can determine with confidence |
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| the identity, concentration, or properties of an analyte |
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| species that affects the signal of an analyte |
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| remaining sample separate from the analyte |
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| application of a technique for a specific analyte in a specific matrix |
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| a solution that does not contain the sample |
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| measure of variability between results |
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| set of written directions telling us how to apply a method to a particular sample, including information on obtaining samples, handling interferents, and validating results |
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| set of stringent guidelines specifying a procedure that must be followed if an agency is to accept the results |
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| quality assurance and quality control, ensure that a laboratory’s work is both accurate and precise |
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| a method is relatively free from chemical interferences, we can use it on many analytes in a wide variety of sample matrices |
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| relatively insensitive to changes in experimental conditions |
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| measure of a method’s freedom from interferences |
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| defines selectivity of a method for the interferent relative to the analyte |
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| measure of its ability to establish that such differences are significant |
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| anything we can measure, such as mass or absorbance that is proportional to amount of analyte in sample |
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| signal depends only on the analyte, usually rare due to interferents |
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| any chemical or physical principle we can use to study an analyte |
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| technique responding to the absolute amount of analyte, measure mass and volume |
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| proving a procedure/method is accurate and precise to analyze a certain analyte |
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| characterization analysis |
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| the development of new methods for characterizing physical and chemical properties, Determinations of chemical structure, equilibrium constants, particle size, and surface structure |
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| improve our understanding of the theory behind an analytical method |
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| identifying if a certain chemical is present or not |
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| determining how much of an analyte is present in a sample |
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| formality does not take into account what chemical is the solute. NaCl in solution has 0 M because it separates into ions, but has some number of formality |
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