SUMMARY OF BLANK TYPES

Question 1

system blank (instrument blank)

Answer 1

des: not a simulated sample but a measure of instrument or system background response
Use: to establish baseline response of an analytical system in the sample

Question 2

Solvent blank (calibration blank)

Answer 2

to detect & quantitate solvent impurities
the calibration standard correspond to zero analyte concentration
Use: consists only of the solvent used to dilute the sample

Question 3

Reagent blank (Method blank)

Answer 3

To detect and quantitate contamination introduced during sample preparation and analysis
Contains all reagents used in sample preparation and analysis and is carried thru the complete analytical procedure

Question 4

Match-matrix blank

Answer 4

To detect and quantitate contamination introduced during sample collection, handling storage, transport, preparation and analysis

Question 5

Sampling media blank

Answer 5

To detect contamination associated with sampling media such as filters, traps, and sample bottles
consists of the sampling media used for sample collection

Question 6

Equipment blank

Answer 6

To determine types of contaminants that may have been introduced through contact with sampling equipment; also to verify the effectiveness of cleaning procedures