Analytical Chemistry Quiz

What is a sample containing all components except analyte, and it is taken through all steps of the analytical procedure?

a. method blank
b. reagent blank
c. field blank
d. spike blank
e. matrix blank

Answer:

c. field blank

A field blank is a sample containing all components except analyte, and it is taken through all steps of the analytical procedure. Field blanks are used to monitor and detect any contamination that may occur during sampling or analysis.

Field blanks are particularly important in environmental and water testing to ensure the accuracy and reliability of analytical results. By analyzing field blanks alongside actual samples, analysts can identify and account for any contamination that may have affected the results.

It is essential to properly prepare and handle field blanks to minimize the risk of introducing contamination. Proper labeling, storage, and processing procedures should be followed to ensure the integrity of field blanks and the validity of analytical results.