Definitions

Question 1

Process of examining data to uncover patterns, insights or relationships

Answer 1

Analysis

Question 2

Making decisions on reaching conclusions based on available data

Answer 2

Determination

Question 3

Quantifying attributes of objects using standardized units

Answer 3

Measurements

Question 4

The process that provides chemical or physical information about the constituents in the sample

Answer 4

Analysis

Question 5

The constituents of interest in a sample

Answer 5

Analytes

Question 6

All other constituents except fot analytes

Answer 6

Matrix

Question 7

Analysis of a sample. To find the identify, concentration or properties of an analyte.

Answer 7

Determination

Question 8

An experimental determination of an analyte’s chemical or physical properties

Answer 8

Measurement

Question 9

Chemical or physical principle that can be used to analyze a sample

Answer 9

Techniques

Question 10

Means for analyzing a sample for a specific matrix

Answer 10

Method

Question 11

Written directions outlining how to analyze a sample

Answer 11

Procedure

Question 12

Set of written guidelines for analyzing a sample specified by an agency

Answer 12

Protocol

Question 13

Experimental measurement proportional to the amount of analytes

Answer 13

Signal

Question 14

Technique, the signal is proportional to the absolute amount of analyte. Also called classical techniques

Answer 14

Total Analysis Techniques

Question 15

Technique, signal us proportional to the analyte’s concentration. Also called “instrumental” techniques

Answer 15

Concentration Techniques

Question 16

A measurement of the agreement between an experimental result and its expected value

Answer 16

Accuracy

Question 17

An inclination of the reproducibility of a measurement or result

Answer 17

Precision

Question 18

Measure of a method’a ability to distinguish between two sample.
Change in signal per unit change in the amount of analyte.

Answer 18

Sensitivity

Question 19

Statistical statement about the smallest amount of analyte that can be determined with confidence.

Answer 19

Detection limit

Question 20

Measure of a method’s freedom from interferences. As defined by the method’s selectivity coefficient.

Answer 20

Selectivity

Question 21

A method that can be applied to analytes in a wide variety of matrices

Answer 21

Robust

Question 22

A method sensitive to changes in experimental conditions.

Answer 22

Rugged

Question 23

A process ensuring that the signal measured by a piece of equipment is correct.

Answer 23

Calibration

Question 24

A process establishing the relation between the amount of analyte and a method’s signal

Answer 24

Standardization

Question 25

Result of a standardization. Showing graphically how a method’s signal change with respect to the amount of analyte.

Answer 25

Calibration curve

Question 26

Process of verifying that the procedure yield acceptable results.

Answer 26

Validation