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Cards In This Set
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Quantitative analysis
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Measurement of the quantities of particular constituents present in a substance.
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Qualitative analysis
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Identification of the constituents present in a substance.
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Random error
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Random errors are errors in measurement that lead to measured values being inconsistent when repeated measures of a constant attribute or quantity are taken.
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Standard deviation
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The square root of the variance
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Relative standard deviation
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The deviation with respect to the value deviated from (usually a percent)
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Confidence interval
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A range of values so defined that there is a specified probability that the value of a parameter lies within it
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Calibration Sensitivity
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How sensitive the instrument is depends on how steep the calibration slope is
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Analytical sensitivity
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How sensitive the instrument is depends on how precise the results are
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Limit of detection
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The lowest quantity of a substance that can be distinguished from the absence of that substance (a blank value) within a stated confidence limit
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Limit of quantification
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The lowest concentration at which the analyte can not only be reliably detected but at which some predefined goals for bias and imprecision are met.
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Dynamic range
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The range between LOQ and LOL
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External standard calibration
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Using a set of standards and a calibration curve to determine the amount of analyte in a separate sample
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Internal standard calibration
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A chemical substance that is added in a constant amount to samples, the blank and calibration standards
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Standard addition
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Several solutions containing the same amount of unknown, but different amounts of standard.
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Ruggedness
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Precision and accuracy are insensitive to environment changes
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