Definitions Flashcards
Process of examining data to uncover patterns, insights or relationships
Analysis
Making decisions on reaching conclusions based on available data
Determination
Quantifying attributes of objects using standardized units
Measurements
The process that provides chemical or physical information about the constituents in the sample
Analysis
The constituents of interest in a sample
Analytes
All other constituents except fot analytes
Matrix
Analysis of a sample. To find the identify, concentration or properties of an analyte.
Determination
An experimental determination of an analyte’s chemical or physical properties
Measurement
Chemical or physical principle that can be used to analyze a sample
Techniques
Means for analyzing a sample for a specific matrix
Method
Written directions outlining how to analyze a sample
Procedure
Set of written guidelines for analyzing a sample specified by an agency
Protocol
Experimental measurement proportional to the amount of analytes
Signal
Technique, the signal is proportional to the absolute amount of analyte. Also called classical techniques
Total Analysis Techniques
Technique, signal us proportional to the analyte’s concentration. Also called “instrumental” techniques
Concentration Techniques
A measurement of the agreement between an experimental result and its expected value
Accuracy
An inclination of the reproducibility of a measurement or result
Precision
Measure of a method’a ability to distinguish between two sample.
Change in signal per unit change in the amount of analyte.
Sensitivity
Statistical statement about the smallest amount of analyte that can be determined with confidence.
Detection limit
Measure of a method’s freedom from interferences. As defined by the method’s selectivity coefficient.
Selectivity
A method that can be applied to analytes in a wide variety of matrices
Robust
A method sensitive to changes in experimental conditions.
Rugged
A process ensuring that the signal measured by a piece of equipment is correct.
Calibration
A process establishing the relation between the amount of analyte and a method’s signal
Standardization
